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in repository https://gitbox.apache.org/repos/asf/qpid-broker-j.git


The following commit(s) were added to refs/heads/main by this push:
     new 0d386dd353 QPID-8653: [Broker-J] Code cleanup: collection type 
arguments, collection factory methods, lambdas (#214)
0d386dd353 is described below

commit 0d386dd353cf777d12ce5e15bcf8f2c5a09cc720
Author: Daniil Kirilyuk <daniel.kiril...@gmail.com>
AuthorDate: Mon Aug 7 13:03:42 2023 +0200

    QPID-8653: [Broker-J] Code cleanup: collection type arguments, collection 
factory methods, lambdas (#214)
---
 .../store/berkeleydb/AbstractBDBMessageStore.java  |  10 +-
 .../qpid/server/store/berkeleydb/BDBBackup.java    |  12 +-
 .../store/berkeleydb/BDBPreferenceStore.java       |  81 +++--
 .../store/berkeleydb/CoalescingCommiter.java       |   4 +-
 .../server/store/berkeleydb/EnvironmentFacade.java |  18 +-
 .../replication/ReplicatedEnvironmentFacade.java   | 338 ++++++++-------------
 .../store/berkeleydb/tuple/ByteBufferBinding.java  |  10 +-
 .../store/berkeleydb/tuple/StringMapBinding.java   |   2 +-
 .../berkeleydb/upgrade/AbstractStoreUpgrade.java   |  11 +-
 .../store/berkeleydb/upgrade/CursorOperation.java  |  16 +-
 .../store/berkeleydb/upgrade/DatabaseTemplate.java |  11 +-
 .../store/berkeleydb/upgrade/UpgradeFrom4To5.java  |  49 ++-
 .../store/berkeleydb/upgrade/UpgradeFrom5To6.java  |  59 ++--
 .../store/berkeleydb/upgrade/UpgradeFrom7To8.java  |  24 +-
 .../upgrade/UpgradeInteractionHandler.java         |  12 +-
 .../berkeleydb/BDBHARemoteReplicationNodeImpl.java |   1 -
 .../berkeleydb/BDBHAVirtualHostNodeImpl.java       |  79 ++---
 .../store/berkeleydb/BDBHAVirtualHostNodeTest.java |   6 +-
 .../store/berkeleydb/BDBPreferenceStoreTest.java   |   2 +-
 .../berkeleydb/BDBStoreUpgradeTestPreparer.java    |   4 +-
 .../ReplicatedEnvironmentFacadeTest.java           |  15 +-
 .../store/berkeleydb/upgrade/UpgraderTest.java     |   2 +-
 22 files changed, 294 insertions(+), 472 deletions(-)

diff --git 
a/bdbstore/src/main/java/org/apache/qpid/server/store/berkeleydb/AbstractBDBMessageStore.java
 
b/bdbstore/src/main/java/org/apache/qpid/server/store/berkeleydb/AbstractBDBMessageStore.java
index acfddb577b..1fca731aca 100644
--- 
a/bdbstore/src/main/java/org/apache/qpid/server/store/berkeleydb/AbstractBDBMessageStore.java
+++ 
b/bdbstore/src/main/java/org/apache/qpid/server/store/berkeleydb/AbstractBDBMessageStore.java
@@ -1360,14 +1360,10 @@ public abstract class AbstractBDBMessageStore 
implements MessageStore
             {
                 final StoredBDBMessage storedMessage = (StoredBDBMessage) 
message.getStoredMessage();
                 final long contentSize = storedMessage.getContentSize();
-                _preCommitActions.add(new Runnable()
+                _preCommitActions.add(() ->
                 {
-                    @Override
-                    public void run()
-                    {
-                        storedMessage.store(_txn);
-                        _storeSizeIncrease += contentSize;
-                    }
+                    storedMessage.store(_txn);
+                    _storeSizeIncrease += contentSize;
                 });
 
             }
diff --git 
a/bdbstore/src/main/java/org/apache/qpid/server/store/berkeleydb/BDBBackup.java 
b/bdbstore/src/main/java/org/apache/qpid/server/store/berkeleydb/BDBBackup.java
index cd67da9a1e..b3628a35c4 100644
--- 
a/bdbstore/src/main/java/org/apache/qpid/server/store/berkeleydb/BDBBackup.java
+++ 
b/bdbstore/src/main/java/org/apache/qpid/server/store/berkeleydb/BDBBackup.java
@@ -23,7 +23,6 @@ package org.apache.qpid.server.store.berkeleydb;
 import java.io.File;
 import java.io.FileInputStream;
 import java.io.FileNotFoundException;
-import java.io.FilenameFilter;
 import java.io.IOException;
 import java.nio.file.Files;
 import java.util.Arrays;
@@ -237,14 +236,7 @@ public class BDBBackup
         while (!consistentSet)
         {
             // List all .jdb files in the directory.
-            fileSet = fromDirFile.listFiles(new FilenameFilter()
-                    {
-                        @Override
-                        public boolean accept(File dir, String name)
-                        {
-                            return name.endsWith(LOG_FILE_SUFFIX);
-                        }
-                    });
+            fileSet = fromDirFile.listFiles((dir, name) -> 
name.endsWith(LOG_FILE_SUFFIX));
 
             if (fileSet == null || fileSet.length == 0)
             {
@@ -303,7 +295,7 @@ public class BDBBackup
         }
 
         // Copy the consistent set of open files.
-        List<String> backedUpFileNames = new LinkedList<String>();
+        List<String> backedUpFileNames = new LinkedList<>();
 
         for (int j = 0; j < fileSet.length; j++)
         {
diff --git 
a/bdbstore/src/main/java/org/apache/qpid/server/store/berkeleydb/BDBPreferenceStore.java
 
b/bdbstore/src/main/java/org/apache/qpid/server/store/berkeleydb/BDBPreferenceStore.java
index ce4790c8fe..dc69604ae0 100644
--- 
a/bdbstore/src/main/java/org/apache/qpid/server/store/berkeleydb/BDBPreferenceStore.java
+++ 
b/bdbstore/src/main/java/org/apache/qpid/server/store/berkeleydb/BDBPreferenceStore.java
@@ -45,54 +45,47 @@ public class BDBPreferenceStore extends 
AbstractBDBPreferenceStore
     public BDBPreferenceStore(final ConfiguredObject<?> parent, final String 
storePath)
     {
         _storePath = storePath;
-        _environmentFactory = new EnvironmentFacadeFactory()
+        _environmentFactory = object -> new StandardEnvironmentFacade(new 
StandardEnvironmentConfiguration()
         {
             @Override
-            public EnvironmentFacade createEnvironmentFacade(final 
ConfiguredObject<?> object)
+            public String getName()
             {
-                return new StandardEnvironmentFacade(new 
StandardEnvironmentConfiguration()
-                {
-                    @Override
-                    public String getName()
-                    {
-                        return parent.getName();
-                    }
-
-                    @Override
-                    public String getStorePath()
-                    {
-                        return storePath;
-                    }
-
-                    @Override
-                    public CacheMode getCacheMode()
-                    {
-                        return BDBUtils.getCacheMode(parent);
-                    }
-
-                    @Override
-                    public Map<String, String> getParameters()
-                    {
-                        return 
BDBUtils.getEnvironmentConfigurationParameters(parent);
-                    }
-
-                    @Override
-                    public <T> T getFacadeParameter(final Class<T> 
paremeterClass, final String parameterName, final T defaultValue)
-                    {
-                        return BDBUtils.getContextValue(parent, 
paremeterClass, parameterName, defaultValue);
-                    }
-
-                    @Override
-                    public <T> T getFacadeParameter(final Class<T> 
paremeterClass,
-                                                    final Type type,
-                                                    final String parameterName,
-                                                    final T defaultValue)
-                    {
-                        return BDBUtils.getContextValue(parent, 
paremeterClass, type, parameterName, defaultValue);
-                    }
-                });
+                return parent.getName();
             }
-        };
+
+            @Override
+            public String getStorePath()
+            {
+                return storePath;
+            }
+
+            @Override
+            public CacheMode getCacheMode()
+            {
+                return BDBUtils.getCacheMode(parent);
+            }
+
+            @Override
+            public Map<String, String> getParameters()
+            {
+                return BDBUtils.getEnvironmentConfigurationParameters(parent);
+            }
+
+            @Override
+            public <T> T getFacadeParameter(final Class<T> paremeterClass, 
final String parameterName, final T defaultValue)
+            {
+                return BDBUtils.getContextValue(parent, paremeterClass, 
parameterName, defaultValue);
+            }
+
+            @Override
+            public <T> T getFacadeParameter(final Class<T> paremeterClass,
+                                            final Type type,
+                                            final String parameterName,
+                                            final T defaultValue)
+            {
+                return BDBUtils.getContextValue(parent, paremeterClass, type, 
parameterName, defaultValue);
+            }
+        });
     }
 
     @Override
diff --git 
a/bdbstore/src/main/java/org/apache/qpid/server/store/berkeleydb/CoalescingCommiter.java
 
b/bdbstore/src/main/java/org/apache/qpid/server/store/berkeleydb/CoalescingCommiter.java
index fc6e1fbad3..151c01e159 100644
--- 
a/bdbstore/src/main/java/org/apache/qpid/server/store/berkeleydb/CoalescingCommiter.java
+++ 
b/bdbstore/src/main/java/org/apache/qpid/server/store/berkeleydb/CoalescingCommiter.java
@@ -84,8 +84,8 @@ public class CoalescingCommiter implements Committer
     @Override
     public <X> ListenableFuture<X> commitAsync(Transaction tx, X val)
     {
-        ThreadNotifyingSettableFuture<X> future = new 
ThreadNotifyingSettableFuture<X>();
-        BDBCommitFutureResult<X> commitFuture = new 
BDBCommitFutureResult<X>(val, future);
+        ThreadNotifyingSettableFuture<X> future = new 
ThreadNotifyingSettableFuture<>();
+        BDBCommitFutureResult<X> commitFuture = new 
BDBCommitFutureResult<>(val, future);
         _commitThread.addJob(commitFuture, false);
         return future;
     }
diff --git 
a/bdbstore/src/main/java/org/apache/qpid/server/store/berkeleydb/EnvironmentFacade.java
 
b/bdbstore/src/main/java/org/apache/qpid/server/store/berkeleydb/EnvironmentFacade.java
index bf5e9b7ce8..5d3b8c1eca 100644
--- 
a/bdbstore/src/main/java/org/apache/qpid/server/store/berkeleydb/EnvironmentFacade.java
+++ 
b/bdbstore/src/main/java/org/apache/qpid/server/store/berkeleydb/EnvironmentFacade.java
@@ -20,8 +20,6 @@
  */
 package org.apache.qpid.server.store.berkeleydb;
 
-import java.util.Collections;
-import java.util.HashMap;
 import java.util.Map;
 
 import com.google.common.util.concurrent.ListenableFuture;
@@ -39,16 +37,12 @@ import org.apache.qpid.server.model.ConfiguredObject;
 
 public interface EnvironmentFacade
 {
-    @SuppressWarnings("serial")
-    final Map<String, String> ENVCONFIG_DEFAULTS = 
Collections.unmodifiableMap(new HashMap<String, String>()
-    {{
-        put(EnvironmentConfig.LOCK_N_LOCK_TABLES, "7");
-        // Turn off stats generation - feature introduced (and on by default) 
from BDB JE 5.0.84
-        put(EnvironmentConfig.STATS_COLLECT, "false");
-        put(EnvironmentConfig.FILE_LOGGING_LEVEL, "OFF");
-        put(EnvironmentConfig.CONSOLE_LOGGING_LEVEL, "OFF");
-        put(EnvironmentConfig.CLEANER_UPGRADE_TO_LOG_VERSION, "-1");
-    }});
+    Map<String, String> ENVCONFIG_DEFAULTS = 
Map.of(EnvironmentConfig.LOCK_N_LOCK_TABLES, "7",
+            // Turn off stats generation - feature introduced (and on by 
default) from BDB JE 5.0.84
+            EnvironmentConfig.STATS_COLLECT, "false",
+            EnvironmentConfig.FILE_LOGGING_LEVEL, "OFF",
+            EnvironmentConfig.CONSOLE_LOGGING_LEVEL, "OFF",
+            EnvironmentConfig.CLEANER_UPGRADE_TO_LOG_VERSION, "-1");
 
     String CACHE_MODE_PROPERTY_NAME = "qpid.bdb.cache_mode";
     CacheMode CACHE_MODE_DEFAULT = CacheMode.EVICT_LN;
diff --git 
a/bdbstore/src/main/java/org/apache/qpid/server/store/berkeleydb/replication/ReplicatedEnvironmentFacade.java
 
b/bdbstore/src/main/java/org/apache/qpid/server/store/berkeleydb/replication/ReplicatedEnvironmentFacade.java
index 4e77652aa9..d0193cea21 100644
--- 
a/bdbstore/src/main/java/org/apache/qpid/server/store/berkeleydb/replication/ReplicatedEnvironmentFacade.java
+++ 
b/bdbstore/src/main/java/org/apache/qpid/server/store/berkeleydb/replication/ReplicatedEnvironmentFacade.java
@@ -194,7 +194,7 @@ public class ReplicatedEnvironmentFacade implements 
EnvironmentFacade, StateChan
     public static final ReplicaAckPolicy REPLICA_REPLICA_ACKNOWLEDGMENT_POLICY 
= ReplicaAckPolicy.SIMPLE_MAJORITY;
 
     @SuppressWarnings("serial")
-    private static final Map<String, String> REPCONFIG_DEFAULTS = 
Collections.unmodifiableMap(new HashMap<String, String>()
+    private static final Map<String, String> REPCONFIG_DEFAULTS = 
Collections.unmodifiableMap(new HashMap<>()
     {{
         /**
          * Parameter decreased as the 24h default may lead very large log 
files for most users.
@@ -222,13 +222,13 @@ public class ReplicatedEnvironmentFacade implements 
EnvironmentFacade, StateChan
          * is scheduled to become default after JE 5.1.
          */
         put(ReplicationConfig.PROTOCOL_OLD_STRING_ENCODING, 
Boolean.FALSE.toString());
-         /**
-          * Allow Replica to proceed with transactions regardless of the state 
of a Replica
-          * At the moment we do not read or write databases on Replicas.
-          * Setting consistency policy to NoConsistencyRequiredPolicy
-          * would allow to create transaction on Replica immediately.
-          * Any followed write operation would fail with ReplicaWriteException.
-          */
+        /**
+         * Allow Replica to proceed with transactions regardless of the state 
of a Replica
+         * At the moment we do not read or write databases on Replicas.
+         * Setting consistency policy to NoConsistencyRequiredPolicy
+         * would allow to create transaction on Replica immediately.
+         * Any followed write operation would fail with ReplicaWriteException.
+         */
         put(ReplicationConfig.CONSISTENCY_POLICY, 
NoConsistencyRequiredPolicy.NAME);
     }});
 
@@ -263,16 +263,16 @@ public class ReplicatedEnvironmentFacade implements 
EnvironmentFacade, StateChan
      * transfer master operation.
      */
     private final ScheduledThreadPoolExecutor _groupChangeExecutor;
-    private final AtomicReference<State> _state = new 
AtomicReference<State>(State.OPENING);
-    private final ConcurrentMap<String, ReplicationNode> 
_remoteReplicationNodes = new ConcurrentHashMap<String, ReplicationNode>();
-    private final AtomicReference<ReplicationGroupListener> 
_replicationGroupListener = new AtomicReference<ReplicationGroupListener>();
-    private final AtomicReference<StateChangeListener> _stateChangeListener = 
new AtomicReference<StateChangeListener>();
+    private final AtomicReference<State> _state = new 
AtomicReference<>(State.OPENING);
+    private final ConcurrentMap<String, ReplicationNode> 
_remoteReplicationNodes = new ConcurrentHashMap<>();
+    private final AtomicReference<ReplicationGroupListener> 
_replicationGroupListener = new AtomicReference<>();
+    private final AtomicReference<StateChangeListener> _stateChangeListener = 
new AtomicReference<>();
     private final Durability _defaultDurability;
     private final ConcurrentMap<String, Database> _cachedDatabases = new 
ConcurrentHashMap<>();
     private final ConcurrentMap<DatabaseEntry, Sequence> _cachedSequences = 
new ConcurrentHashMap<>();
     private final AtomicReference<ReplicatedEnvironment> _environment = new 
AtomicReference<>();
 
-    private final Set<String> _permittedNodes = new 
CopyOnWriteArraySet<String>();
+    private final Set<String> _permittedNodes = new CopyOnWriteArraySet<>();
     private volatile Durability _realMessageStoreDurability = null;
     private volatile Durability _messageStoreDurability;
     private volatile CoalescingCommiter _coalescingCommiter = null;
@@ -339,22 +339,19 @@ public class ReplicatedEnvironmentFacade implements 
EnvironmentFacade, StateChan
         boolean success = false;
         try
         {
-            createEnvironment(true, new Runnable(){
-                @Override
-                public void run()
+            createEnvironment(true, () ->
+            {
+                populateExistingRemoteReplicationNodes();
+                int numberOfRemoteNodes = _remoteReplicationNodes.size();
+                if (numberOfRemoteNodes > 0)
                 {
-                    populateExistingRemoteReplicationNodes();
-                    int numberOfRemoteNodes = _remoteReplicationNodes.size();
-                    if (numberOfRemoteNodes > 0)
-                    {
-                        int newPoolSize = numberOfRemoteNodes
-                                          + 1 /* for this node */
-                                          + 1 /* for coordination */;
-                        _groupChangeExecutor.setCorePoolSize(newPoolSize);
-                        LOGGER.debug("Setting group change executor core pool 
size to {}", newPoolSize);
-                    }
-                    _groupChangeExecutor.submit(new RemoteNodeStateLearner());
+                    int newPoolSize = numberOfRemoteNodes
+                                      + 1 /* for this node */
+                                      + 1 /* for coordination */;
+                    _groupChangeExecutor.setCorePoolSize(newPoolSize);
+                    LOGGER.debug("Setting group change executor core pool size 
to {}", newPoolSize);
                 }
+                _groupChangeExecutor.submit(new RemoteNodeStateLearner());
             });
             success = true;
         }
@@ -592,65 +589,57 @@ public class ReplicatedEnvironmentFacade implements 
EnvironmentFacade, StateChan
             // Tell the virtualhostnode that we are no longer attached to the 
group.  It will close the virtualhost,
             // closing the connections, housekeeping etc meaning all 
transactions are finished before we
             // restart the environment.
-            _stateChangeExecutor.submit(new Callable<Void>()
+            _stateChangeExecutor.submit(() ->
             {
-                @Override
-                public Void call() throws Exception
+                StateChangeListener listener = _stateChangeListener.get();
+                if (listener != null && _state.get() == State.RESTARTING)
                 {
-                    StateChangeListener listener = _stateChangeListener.get();
-                    if (listener != null && _state.get() == State.RESTARTING)
+                    try
                     {
-                        try
-                        {
-                            StateChangeEvent detached = new 
StateChangeEvent(ReplicatedEnvironment.State.DETACHED, NameIdPair.NULL);
-                            listener.stateChange(detached);
-                        }
-                        catch (Throwable t)
-                        {
-                            handleUncaughtExceptionInExecutorService(t);
-                        }
+                        StateChangeEvent detached = new 
StateChangeEvent(ReplicatedEnvironment.State.DETACHED, NameIdPair.NULL);
+                        listener.stateChange(detached);
+                    }
+                    catch (Throwable t)
+                    {
+                        handleUncaughtExceptionInExecutorService(t);
                     }
-
-                    return null;
                 }
-            }).addListener(new Runnable()
+
+                return null;
+            }).addListener(() ->
             {
-                @Override
-                public void run()
+                int attemptNumber = 1;
+                boolean restarted = false;
+                Exception lastException = null;
+                while(_state.get() == State.RESTARTING && attemptNumber <= 
_environmentRestartRetryLimit)
                 {
-                    int attemptNumber = 1;
-                    boolean restarted = false;
-                    Exception lastException = null;
-                    while(_state.get() == State.RESTARTING && attemptNumber <= 
_environmentRestartRetryLimit)
+                    try
                     {
-                        try
-                        {
-                            restartEnvironment();
-                            restarted = true;
-                            break;
-                        }
-                        catch(EnvironmentFailureException e)
-                        {
-                            LOGGER.warn("Failure whilst trying to restart 
environment (attempt number "
-                                    + "{} of {})", attemptNumber, 
_environmentRestartRetryLimit, e);
-                            lastException = e;
-                        }
-                        catch (Exception e)
-                        {
-                            LOGGER.error("Fatal failure whilst trying to 
restart environment", e);
-                            lastException = e;
-                            break;
-                        }
-                        attemptNumber++;
+                        restartEnvironment();
+                        restarted = true;
+                        break;
+                    }
+                    catch(EnvironmentFailureException e)
+                    {
+                        LOGGER.warn("Failure whilst trying to restart 
environment (attempt number "
+                                + "{} of {})", attemptNumber, 
_environmentRestartRetryLimit, e);
+                        lastException = e;
                     }
+                    catch (Exception e)
+                    {
+                        LOGGER.error("Fatal failure whilst trying to restart 
environment", e);
+                        lastException = e;
+                        break;
+                    }
+                    attemptNumber++;
+                }
 
-                    if (!restarted)
+                if (!restarted)
+                {
+                    LOGGER.error("Failed to restart environment.");
+                    if (lastException != null)
                     {
-                        LOGGER.error("Failed to restart environment.");
-                        if (lastException != null)
-                        {
-                            
handleUncaughtExceptionInExecutorService(lastException);
-                        }
+                        
handleUncaughtExceptionInExecutorService(lastException);
                     }
                 }
             }, _environmentJobExecutor);
@@ -773,19 +762,15 @@ public class ReplicatedEnvironmentFacade implements 
EnvironmentFacade, StateChan
 
         if (_state.get() != State.CLOSING && _state.get() != State.CLOSED)
         {
-            _stateChangeExecutor.submit(new Runnable()
+            _stateChangeExecutor.submit(() ->
             {
-                @Override
-                public void run()
+                try
                 {
-                    try
-                    {
-                        stateChanged(stateChangeEvent);
-                    }
-                    catch (Throwable e)
-                    {
-                        handleUncaughtExceptionInExecutorService(e);
-                    }
+                    stateChanged(stateChangeEvent);
+                }
+                catch (Throwable e)
+                {
+                    handleUncaughtExceptionInExecutorService(e);
                 }
             });
         }
@@ -831,14 +816,10 @@ public class ReplicatedEnvironmentFacade implements 
EnvironmentFacade, StateChan
     {
         LOGGER.debug("Submitting a job to set cache size on {} to {}", 
_prettyGroupNodeName, cacheSize);
 
-        Callable<Void> task = new Callable<Void>()
+        Callable<Void> task = () ->
         {
-            @Override
-            public Void call()
-            {
-                setCacheSizeInternal(cacheSize);
-                return null;
-            }
+            setCacheSizeInternal(cacheSize);
+            return null;
         };
         submitEnvironmentTask(1, task, "setting cache size");
     }
@@ -848,14 +829,10 @@ public class ReplicatedEnvironmentFacade implements 
EnvironmentFacade, StateChan
     {
         LOGGER.debug("Submitting a job to set update mutable config on {}", 
_prettyGroupNodeName);
 
-        Callable<Void> task = new Callable<Void>()
+        Callable<Void> task = () ->
         {
-            @Override
-            public Void call()
-            {
-                EnvironmentUtils.updateMutableConfig(getEnvironment(), 
PARAMS_SET_BY_DEFAULT, true, object);
-                return null;
-            }
+            EnvironmentUtils.updateMutableConfig(getEnvironment(), 
PARAMS_SET_BY_DEFAULT, true, object);
+            return null;
         };
         submitEnvironmentTask(5, task, "updating mutable config");
 
@@ -868,14 +845,7 @@ public class ReplicatedEnvironmentFacade implements 
EnvironmentFacade, StateChan
         LOGGER.debug("Submitting a job to clean log files on {} ", 
_prettyGroupNodeName);
         int timeout = 5;
 
-        Callable<Integer> task = new Callable<Integer>()
-        {
-            @Override
-            public Integer call()
-            {
-                return getEnvironment().cleanLog();
-            }
-        };
+        Callable<Integer> task = () -> getEnvironment().cleanLog();
 
 
         Integer fileCount = submitEnvironmentTask(timeout, task, "cleaning log 
files");
@@ -888,16 +858,12 @@ public class ReplicatedEnvironmentFacade implements 
EnvironmentFacade, StateChan
         LOGGER.debug("Submitting a job to perform checkpoint on {} ", 
_prettyGroupNodeName);
         int timeout = 5;
 
-        Callable<Void> task = new Callable<Void>()
+        Callable<Void> task = () ->
         {
-            @Override
-            public Void call()
-            {
-                CheckpointConfig checkpointConfig = new CheckpointConfig();
-                checkpointConfig.setForce(force);
-                getEnvironment().checkpoint(checkpointConfig);
-                return null;
-            }
+            CheckpointConfig checkpointConfig = new CheckpointConfig();
+            checkpointConfig.setForce(force);
+            getEnvironment().checkpoint(checkpointConfig);
+            return null;
         };
 
         submitEnvironmentTask(timeout, task, "perform checkpoint");
@@ -909,15 +875,8 @@ public class ReplicatedEnvironmentFacade implements 
EnvironmentFacade, StateChan
         LOGGER.debug("Submitting a job to get environment statistics on {} ", 
_prettyGroupNodeName);
         int timeout = 5;
 
-        Callable<Map<String,Map<String,Object>>> task = new 
Callable<Map<String,Map<String,Object>>>()
-        {
-            @Override
-            public Map<String,Map<String,Object>> call()
-            {
-                return 
EnvironmentUtils.getEnvironmentStatistics(getEnvironment(), reset);
-
-            }
-        };
+        Callable<Map<String,Map<String,Object>>> task = () ->
+                EnvironmentUtils.getEnvironmentStatistics(getEnvironment(), 
reset);
 
         return submitEnvironmentTask(timeout, task, "get environment 
statistics");
     }
@@ -928,14 +887,7 @@ public class ReplicatedEnvironmentFacade implements 
EnvironmentFacade, StateChan
         LOGGER.debug("Submitting a job to get transaction statistics on {} ", 
_prettyGroupNodeName);
         int timeout = 5;
 
-        Callable<Map<String,Object>> task = new Callable<Map<String,Object>>()
-        {
-            @Override
-            public Map<String,Object> call()
-            {
-                return 
EnvironmentUtils.getTransactionStatistics(getEnvironment(), reset);
-            }
-        };
+        Callable<Map<String,Object>> task = () -> 
EnvironmentUtils.getTransactionStatistics(getEnvironment(), reset);
 
         return submitEnvironmentTask(timeout, task, "get transaction 
statistics");
     }
@@ -946,15 +898,7 @@ public class ReplicatedEnvironmentFacade implements 
EnvironmentFacade, StateChan
         LOGGER.debug("Submitting a job to get database statistics for {} on {} 
", database, _prettyGroupNodeName);
         int timeout = 5;
 
-        Callable<Map<String,Object>> task = new Callable<Map<String,Object>>()
-        {
-            @Override
-            public Map<String, Object> call()
-            {
-
-                return 
EnvironmentUtils.getDatabaseStatistics(getEnvironment(), database, reset);
-            }
-        };
+        Callable<Map<String,Object>> task = () -> 
EnvironmentUtils.getDatabaseStatistics(getEnvironment(), database, reset);
 
         return submitEnvironmentTask(timeout, task, "get database statistics 
for '" + database + "'");
 
@@ -1255,30 +1199,26 @@ public class ReplicatedEnvironmentFacade implements 
EnvironmentFacade, StateChan
         // Transfer master contacts the group (using GroupAdmin) to request 
the mastership change.
         // It needs to be done asynchronously but not on the 
_environmentJobExecutor, as there is
         // no point delaying transfer master because we are restarting.
-        return _groupChangeExecutor.submit(new Callable<Void>()
+        return _groupChangeExecutor.submit(() ->
         {
-            @Override
-            public Void call() throws Exception
+            try
             {
-                try
-                {
-                    ReplicationGroupAdmin admin = 
createReplicationGroupAdmin();
-                    String newMaster = 
admin.transferMaster(Collections.singleton(nodeName),
-                                                            
_masterTransferTimeout, TimeUnit.MILLISECONDS, true);
-                    if (LOGGER.isDebugEnabled())
-                    {
-                        LOGGER.debug("The mastership has been transferred to " 
+ newMaster);
-                    }
-                }
-                catch (RuntimeException e)
+                ReplicationGroupAdmin admin = createReplicationGroupAdmin();
+                String newMaster = 
admin.transferMaster(Collections.singleton(nodeName),
+                                                        
_masterTransferTimeout, TimeUnit.MILLISECONDS, true);
+                if (LOGGER.isDebugEnabled())
                 {
-                    String message = "Exception on transferring the mastership 
to " + _prettyGroupNodeName
-                            + " Master transfer timeout : " + 
_masterTransferTimeout;
-                    LOGGER.warn(message, e);
-                    throw handleDatabaseException(message, e);
+                    LOGGER.debug("The mastership has been transferred to " + 
newMaster);
                 }
-                return null;
             }
+            catch (RuntimeException e)
+            {
+                String message = "Exception on transferring the mastership to 
" + _prettyGroupNodeName
+                        + " Master transfer timeout : " + 
_masterTransferTimeout;
+                LOGGER.warn(message, e);
+                throw handleDatabaseException(message, e);
+            }
+            return null;
         });
     }
 
@@ -1331,7 +1271,7 @@ public class ReplicatedEnvironmentFacade implements 
EnvironmentFacade, StateChan
 
     private ReplicationGroupAdmin createReplicationGroupAdmin()
     {
-        final Set<InetSocketAddress> helpers = new 
HashSet<InetSocketAddress>();
+        final Set<InetSocketAddress> helpers = new HashSet<>();
         final ReplicationConfig repConfig = getEnvironment().getRepConfig();
 
         helpers.addAll(repConfig.getHelperSockets());
@@ -1616,14 +1556,10 @@ public class ReplicatedEnvironmentFacade implements 
EnvironmentFacade, StateChan
     private void createEnvironmentInSeparateThread(final File 
environmentPathFile, final EnvironmentConfig envConfig,
                                                    final ReplicationConfig 
replicationConfig, final Runnable postCreationAction)
     {
-        Future<Void> environmentFuture = _environmentJobExecutor.submit(new 
Callable<Void>()
+        Future<Void> environmentFuture = _environmentJobExecutor.submit(() ->
         {
-            @Override
-            public Void call() throws Exception
-            {
-                createEnvironment(environmentPathFile, envConfig, 
replicationConfig, postCreationAction);
-                return null;
-            }
+            createEnvironment(environmentPathFile, envConfig, 
replicationConfig, postCreationAction);
+            return null;
         });
 
         final long setUpTimeOutMillis = 
extractEnvSetupTimeoutMillis(replicationConfig);
@@ -1835,7 +1771,7 @@ public class ReplicatedEnvironmentFacade implements 
EnvironmentFacade, StateChan
         try
         {
             Map<String, Object> settings = 
objectMapper.readValue(applicationState, Map.class);
-            return new 
HashSet<String>((Collection<String>)settings.get(PERMITTED_NODE_LIST));
+            return new HashSet<>((Collection<String>) 
settings.get(PERMITTED_NODE_LIST));
         }
         catch (Exception e)
         {
@@ -1846,25 +1782,15 @@ public class ReplicatedEnvironmentFacade implements 
EnvironmentFacade, StateChan
     public static Collection<String> 
connectToHelperNodeAndCheckPermittedHosts(final String nodeName, final String 
hostPort, final String groupName, final String helperNodeName, final String 
helperHostPort, final int dbPingSocketTimeout)
     {
         ExecutorService executor = null;
-        Future<Collection<String>> future = null;
+        Future<Collection<String>> future;
         try
         {
             executor = Executors.newSingleThreadExecutor(new 
DaemonThreadFactory(String.format(
                             "PermittedHostsCheck-%s-%s",
                             groupName,
                             nodeName)));
-            future = executor.submit(new Callable<Collection<String>>()
-            {
-                @Override
-                public Collection<String> call() throws Exception
-                {
-                    return getPermittedHostsFromHelper(nodeName,
-                                                       groupName,
-                                                       helperNodeName,
-                                                       helperHostPort,
-                                                       dbPingSocketTimeout);
-                }
-            });
+            future = executor.submit(() ->
+                    getPermittedHostsFromHelper(nodeName, groupName, 
helperNodeName, helperHostPort, dbPingSocketTimeout));
 
             try
             {
@@ -2017,7 +1943,7 @@ public class ReplicatedEnvironmentFacade implements 
EnvironmentFacade, StateChan
 
     private byte[] permittedNodeListToBytes(Set<String> permittedNodeList)
     {
-        HashMap<String, Object> data = new HashMap<String, Object>();
+        HashMap<String, Object> data = new HashMap<>();
         data.put(PERMITTED_NODE_LIST, permittedNodeList);
         ByteArrayOutputStream baos = new ByteArrayOutputStream();
         ObjectMapper objectMapper = new ObjectMapper();
@@ -2075,16 +2001,12 @@ public class ReplicatedEnvironmentFacade implements 
EnvironmentFacade, StateChan
 
     private void onException(final Exception e)
     {
-        _groupChangeExecutor.submit(new Runnable()
+        _groupChangeExecutor.submit(() ->
         {
-            @Override
-            public void run()
+            ReplicationGroupListener listener = 
_replicationGroupListener.get();
+            if (listener != null)
             {
-                ReplicationGroupListener listener = 
_replicationGroupListener.get();
-                if (listener != null)
-                {
-                    listener.onException(e);
-                }
+                listener.onException(e);
             }
         });
     }
@@ -2264,31 +2186,27 @@ public class ReplicatedEnvironmentFacade implements 
EnvironmentFacade, StateChan
 
         private Map<ReplicationNode, NodeState> 
discoverNodeStates(Collection<ReplicationNode> electableNodes)
         {
-            final Map<ReplicationNode, NodeState> nodeStates = new 
HashMap<ReplicationNode, NodeState>();
-            Map<ReplicationNode, Future<Void>> futureMap = new 
HashMap<ReplicationNode, Future<Void>>();
+            final Map<ReplicationNode, NodeState> nodeStates = new HashMap<>();
+            Map<ReplicationNode, Future<Void>> futureMap = new HashMap<>();
 
             for (final ReplicationNode node : electableNodes)
             {
                 nodeStates.put(node, null);
 
-                Future<Void> future = _groupChangeExecutor.submit(new 
Callable<Void>()
+                Future<Void> future = _groupChangeExecutor.submit(() ->
                 {
-                    @Override
-                    public Void call()
+                    NodeState nodeStateObject = null;
+                    try
                     {
-                        NodeState nodeStateObject = null;
-                        try
-                        {
-                            nodeStateObject = 
getRemoteNodeState(_configuration.getGroupName(), node, _dbPingSocketTimeout);
-                        }
-                        catch (IOException | ServiceConnectFailedException | 
com.sleepycat.je.rep.utilint.BinaryProtocol.ProtocolException e )
-                        {
-                            // Cannot discover node states. The node state 
should be treated as UNKNOWN
-                        }
-
-                        nodeStates.put(node, nodeStateObject);
-                        return null;
+                        nodeStateObject = 
getRemoteNodeState(_configuration.getGroupName(), node, _dbPingSocketTimeout);
+                    }
+                    catch (IOException | ServiceConnectFailedException | 
BinaryProtocol.ProtocolException e )
+                    {
+                        // Cannot discover node states. The node state should 
be treated as UNKNOWN
                     }
+
+                    nodeStates.put(node, nodeStateObject);
+                    return null;
                 });
                 futureMap.put(node, future);
             }
diff --git 
a/bdbstore/src/main/java/org/apache/qpid/server/store/berkeleydb/tuple/ByteBufferBinding.java
 
b/bdbstore/src/main/java/org/apache/qpid/server/store/berkeleydb/tuple/ByteBufferBinding.java
index 3b10bfc1d1..ac4225b2d4 100644
--- 
a/bdbstore/src/main/java/org/apache/qpid/server/store/berkeleydb/tuple/ByteBufferBinding.java
+++ 
b/bdbstore/src/main/java/org/apache/qpid/server/store/berkeleydb/tuple/ByteBufferBinding.java
@@ -32,15 +32,7 @@ public class ByteBufferBinding extends 
TupleBinding<QpidByteBuffer>
 {
     private static final int COPY_BUFFER_SIZE = 8192;
 
-    private static final ThreadLocal<byte[]> COPY_BUFFER = new 
ThreadLocal<byte[]>()
-                                                            {
-
-                                                                @Override
-                                                                protected 
byte[] initialValue()
-                                                                {
-                                                                    return new 
byte[COPY_BUFFER_SIZE];
-                                                                }
-                                                            };
+    private static final ThreadLocal<byte[]> COPY_BUFFER = 
ThreadLocal.withInitial(() -> new byte[COPY_BUFFER_SIZE]);
 
     private static final ByteBufferBinding INSTANCE = new ByteBufferBinding();
 
diff --git 
a/bdbstore/src/main/java/org/apache/qpid/server/store/berkeleydb/tuple/StringMapBinding.java
 
b/bdbstore/src/main/java/org/apache/qpid/server/store/berkeleydb/tuple/StringMapBinding.java
index fffdb0d107..7aee489545 100644
--- 
a/bdbstore/src/main/java/org/apache/qpid/server/store/berkeleydb/tuple/StringMapBinding.java
+++ 
b/bdbstore/src/main/java/org/apache/qpid/server/store/berkeleydb/tuple/StringMapBinding.java
@@ -35,7 +35,7 @@ public class StringMapBinding extends 
TupleBinding<Map<String,String>>
     public Map<String, String> entryToObject(final TupleInput tupleInput)
     {
         int entries = tupleInput.readInt();
-        Map<String,String> map = new HashMap<String,String>(entries);
+        Map<String,String> map = new HashMap<>(entries);
         for(int i = 0; i < entries; i++)
         {
             map.put(tupleInput.readString(), tupleInput.readString());
diff --git 
a/bdbstore/src/main/java/org/apache/qpid/server/store/berkeleydb/upgrade/AbstractStoreUpgrade.java
 
b/bdbstore/src/main/java/org/apache/qpid/server/store/berkeleydb/upgrade/AbstractStoreUpgrade.java
index ec10a32a20..e1e1b1fdc1 100644
--- 
a/bdbstore/src/main/java/org/apache/qpid/server/store/berkeleydb/upgrade/AbstractStoreUpgrade.java
+++ 
b/bdbstore/src/main/java/org/apache/qpid/server/store/berkeleydb/upgrade/AbstractStoreUpgrade.java
@@ -22,9 +22,7 @@ package org.apache.qpid.server.store.berkeleydb.upgrade;
 
 import java.util.List;
 
-import com.sleepycat.je.Database;
 import com.sleepycat.je.Environment;
-import com.sleepycat.je.Transaction;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
@@ -63,14 +61,7 @@ public abstract class AbstractStoreUpgrade implements 
StoreUpgrade
 
     private long getRowCount(String databaseName, Environment environment)
     {
-        DatabaseCallable<Long> operation = new DatabaseCallable<Long>()
-        {
-            @Override
-            public Long call(Database sourceDatabase, Database targetDatabase, 
Transaction transaction)
-            {
-                return sourceDatabase.count();
-            }
-        };
+        DatabaseCallable<Long> operation = (sourceDatabase, targetDatabase, 
transaction) -> sourceDatabase.count();
         return new DatabaseTemplate(environment, databaseName, 
null).call(operation);
     }
 
diff --git 
a/bdbstore/src/main/java/org/apache/qpid/server/store/berkeleydb/upgrade/CursorOperation.java
 
b/bdbstore/src/main/java/org/apache/qpid/server/store/berkeleydb/upgrade/CursorOperation.java
index dad99fc32d..b8f9461db7 100644
--- 
a/bdbstore/src/main/java/org/apache/qpid/server/store/berkeleydb/upgrade/CursorOperation.java
+++ 
b/bdbstore/src/main/java/org/apache/qpid/server/store/berkeleydb/upgrade/CursorOperation.java
@@ -39,20 +39,14 @@ public abstract class CursorOperation implements 
DatabaseRunnable
     public void run(final Database sourceDatabase, final Database 
targetDatabase, final Transaction transaction)
     {
         _rowCount = sourceDatabase.count();
-        _template = new CursorTemplate(sourceDatabase, transaction, new 
DatabaseEntryCallback()
+        _template = new CursorTemplate(sourceDatabase, transaction, (database, 
transaction1, key, value) ->
         {
-            @Override
-            public void processEntry(final Database database, final 
Transaction transaction, final DatabaseEntry key,
-                    final DatabaseEntry value)
+            _processedRowCount++;
+            CursorOperation.this.processEntry(database, targetDatabase, 
transaction1, key, value);
+            if (getProcessedCount() % 1000 == 0)
             {
-                _processedRowCount++;
-                CursorOperation.this.processEntry(database, targetDatabase, 
transaction, key, value);
-                if (getProcessedCount() % 1000 == 0)
-                {
-                    LOGGER.info("Processed " + getProcessedCount() + " records 
of " + getRowCount() + ".");
-                }
+                LOGGER.info("Processed " + getProcessedCount() + " records of 
" + getRowCount() + ".");
             }
-
         });
         _template.processEntries();
     }
diff --git 
a/bdbstore/src/main/java/org/apache/qpid/server/store/berkeleydb/upgrade/DatabaseTemplate.java
 
b/bdbstore/src/main/java/org/apache/qpid/server/store/berkeleydb/upgrade/DatabaseTemplate.java
index fd4f4b5416..c47fbdcaaa 100644
--- 
a/bdbstore/src/main/java/org/apache/qpid/server/store/berkeleydb/upgrade/DatabaseTemplate.java
+++ 
b/bdbstore/src/main/java/org/apache/qpid/server/store/berkeleydb/upgrade/DatabaseTemplate.java
@@ -84,15 +84,10 @@ public class DatabaseTemplate
 
     private DatabaseCallable<Void> runnableToCallable(final DatabaseRunnable 
databaseRunnable)
     {
-        return new DatabaseCallable<Void>()
+        return (sourceDatabase, targetDatabase, transaction) ->
         {
-
-            @Override
-            public Void call(Database sourceDatabase, Database targetDatabase, 
Transaction transaction)
-            {
-                databaseRunnable.run(sourceDatabase, targetDatabase, 
transaction);
-                return null;
-            }
+            databaseRunnable.run(sourceDatabase, targetDatabase, transaction);
+            return null;
         };
     }
 
diff --git 
a/bdbstore/src/main/java/org/apache/qpid/server/store/berkeleydb/upgrade/UpgradeFrom4To5.java
 
b/bdbstore/src/main/java/org/apache/qpid/server/store/berkeleydb/upgrade/UpgradeFrom4To5.java
index 0e4f9057e4..052d0d4461 100644
--- 
a/bdbstore/src/main/java/org/apache/qpid/server/store/berkeleydb/upgrade/UpgradeFrom4To5.java
+++ 
b/bdbstore/src/main/java/org/apache/qpid/server/store/berkeleydb/upgrade/UpgradeFrom4To5.java
@@ -167,7 +167,7 @@ public class UpgradeFrom4To5 extends AbstractStoreUpgrade
             List<AMQShortString> potentialDurableSubs, Transaction transaction)
     {
         LOGGER.info("Queues");
-        final Set<String> existingQueues = new HashSet<String>();
+        final Set<String> existingQueues = new HashSet<>();
         if (environment.getDatabaseNames().contains(OLD_QUEUE_DB_NAME))
         {
             final QueueRecordBinding binding = new 
QueueRecordBinding(potentialDurableSubs);
@@ -196,7 +196,7 @@ public class UpgradeFrom4To5 extends AbstractStoreUpgrade
             Transaction transaction)
     {
         final List<AMQShortString> exchangeNames = 
findTopicExchanges(environment);
-        final List<AMQShortString> queues = new ArrayList<AMQShortString>();
+        final List<AMQShortString> queues = new ArrayList<>();
         final PartialBindingRecordBinding binding = new 
PartialBindingRecordBinding();
 
         CursorOperation databaseOperation = new CursorOperation()
@@ -219,8 +219,8 @@ public class UpgradeFrom4To5 extends AbstractStoreUpgrade
     private Set<Long> upgradeDelivery(final Environment environment, final 
Set<String> existingQueues,
             final UpgradeInteractionHandler handler, Transaction transaction)
     {
-        final Set<Long> messagesToDiscard = new HashSet<Long>();
-        final Set<String> queuesToDiscard = new HashSet<String>();
+        final Set<Long> messagesToDiscard = new HashSet<>();
+        final Set<String> queuesToDiscard = new HashSet<>();
         final QueueEntryKeyBinding queueEntryKeyBinding = new 
QueueEntryKeyBinding();
         LOGGER.info("Delivery Records");
 
@@ -307,40 +307,37 @@ public class UpgradeFrom4To5 extends AbstractStoreUpgrade
 
         final QueueRecordBinding binding = new QueueRecordBinding(null);
         final BindingTuple bindingTuple = new BindingTuple();
-        DatabaseRunnable queueCreateOperation = new DatabaseRunnable()
+        DatabaseRunnable queueCreateOperation = (newQueueDatabase, 
newBindingsDatabase, transaction1) ->
         {
+            AMQShortString queueNameAMQ = 
AMQShortString.createAMQShortString(queueName);
+            QueueRecord record = new QueueRecord(queueNameAMQ, null, false, 
null);
 
-            @Override
-            public void run(Database newQueueDatabase, Database 
newBindingsDatabase, Transaction transaction)
-            {
-                AMQShortString queueNameAMQ = 
AMQShortString.createAMQShortString(queueName);
-                QueueRecord record = new QueueRecord(queueNameAMQ, null, 
false, null);
-
-                DatabaseEntry key = new DatabaseEntry();
+            DatabaseEntry key = new DatabaseEntry();
 
-                TupleOutput output = new TupleOutput();
-                
AMQShortStringEncoding.writeShortString(record.getNameShortString(), output);
-                TupleBase.outputToEntry(output, key);
+            TupleOutput output = new TupleOutput();
+            
AMQShortStringEncoding.writeShortString(record.getNameShortString(), output);
+            TupleBase.outputToEntry(output, key);
 
-                DatabaseEntry newValue = new DatabaseEntry();
-                binding.objectToEntry(record, newValue);
-                newQueueDatabase.put(transaction, key, newValue);
+            DatabaseEntry newValue = new DatabaseEntry();
+            binding.objectToEntry(record, newValue);
+            newQueueDatabase.put(transaction1, key, newValue);
 
-                FieldTable emptyArguments = 
FieldTableFactory.createFieldTable(Collections.emptyMap());
-                addBindingToDatabase(bindingTuple, newBindingsDatabase, 
transaction, queueNameAMQ,
-                        
AMQShortString.valueOf(ExchangeDefaults.DIRECT_EXCHANGE_NAME), queueNameAMQ, 
emptyArguments);
+            FieldTable emptyArguments = 
FieldTableFactory.createFieldTable(Collections.emptyMap());
+            addBindingToDatabase(bindingTuple, newBindingsDatabase,
+                                 transaction1, queueNameAMQ,
+                                 
AMQShortString.valueOf(ExchangeDefaults.DIRECT_EXCHANGE_NAME), queueNameAMQ, 
emptyArguments);
 
-                // TODO QPID-3490 we should not persist a default exchange 
binding
-                addBindingToDatabase(bindingTuple, newBindingsDatabase, 
transaction, queueNameAMQ,
-                        
AMQShortString.valueOf(ExchangeDefaults.DEFAULT_EXCHANGE_NAME), queueNameAMQ, 
emptyArguments);
-            }
+            // TODO QPID-3490 we should not persist a default exchange binding
+            addBindingToDatabase(bindingTuple, newBindingsDatabase,
+                                 transaction1, queueNameAMQ,
+                                 
AMQShortString.valueOf(ExchangeDefaults.DEFAULT_EXCHANGE_NAME), queueNameAMQ, 
emptyArguments);
         };
         new DatabaseTemplate(environment, NEW_QUEUE_DB_NAME, 
NEW_BINDINGS_DB_NAME, transaction).run(queueCreateOperation);
     }
 
     private List<AMQShortString> findTopicExchanges(final Environment 
environment)
     {
-        final List<AMQShortString> topicExchanges = new 
ArrayList<AMQShortString>();
+        final List<AMQShortString> topicExchanges = new ArrayList<>();
         final ExchangeRecordBinding binding = new ExchangeRecordBinding();
         CursorOperation databaseOperation = new CursorOperation()
         {
diff --git 
a/bdbstore/src/main/java/org/apache/qpid/server/store/berkeleydb/upgrade/UpgradeFrom5To6.java
 
b/bdbstore/src/main/java/org/apache/qpid/server/store/berkeleydb/upgrade/UpgradeFrom5To6.java
index 5262e0b2c5..61916602a9 100644
--- 
a/bdbstore/src/main/java/org/apache/qpid/server/store/berkeleydb/upgrade/UpgradeFrom5To6.java
+++ 
b/bdbstore/src/main/java/org/apache/qpid/server/store/berkeleydb/upgrade/UpgradeFrom5To6.java
@@ -26,9 +26,7 @@ import static 
org.apache.qpid.server.store.berkeleydb.upgrade.UpgradeInteraction
 
 import java.io.IOException;
 import java.util.ArrayList;
-import java.util.Arrays;
 import java.util.HashMap;
-import java.util.HashSet;
 import java.util.List;
 import java.util.Map;
 import java.util.Set;
@@ -69,13 +67,11 @@ public class UpgradeFrom5To6 extends AbstractStoreUpgrade
 {
     private static final Logger LOGGER = 
LoggerFactory.getLogger(UpgradeFrom5To6.class);
 
-    private static final Set<String> DEFAULT_EXCHANGES_SET =
-            new HashSet<String>(Arrays.asList(
-                    ExchangeDefaults.DEFAULT_EXCHANGE_NAME,
-                    ExchangeDefaults.FANOUT_EXCHANGE_NAME,
-                    ExchangeDefaults.HEADERS_EXCHANGE_NAME,
-                    ExchangeDefaults.TOPIC_EXCHANGE_NAME,
-                    ExchangeDefaults.DIRECT_EXCHANGE_NAME));
+    private static final Set<String> DEFAULT_EXCHANGES_SET = 
Set.of(ExchangeDefaults.DEFAULT_EXCHANGE_NAME,
+            ExchangeDefaults.FANOUT_EXCHANGE_NAME,
+            ExchangeDefaults.HEADERS_EXCHANGE_NAME,
+            ExchangeDefaults.TOPIC_EXCHANGE_NAME,
+            ExchangeDefaults.DIRECT_EXCHANGE_NAME);
 
     private static final String ARGUMENTS = "arguments";
 
@@ -172,28 +168,23 @@ public class UpgradeFrom5To6 extends AbstractStoreUpgrade
         LOGGER.info("Message Contents");
         if (environment.getDatabaseNames().contains(OLD_CONTENT_DB_NAME))
         {
-            DatabaseRunnable contentOperation = new DatabaseRunnable()
+            DatabaseRunnable contentOperation = (oldContentDatabase, 
newContentDatabase, contentTransaction) ->
             {
-                @Override
-                public void run(final Database oldContentDatabase, final 
Database newContentDatabase,
-                        Transaction contentTransaction)
+                CursorOperation metaDataDatabaseOperation = new 
CursorOperation()
                 {
-                    CursorOperation metaDataDatabaseOperation = new 
CursorOperation()
-                    {
 
-                        @Override
-                        public void processEntry(Database metadataDatabase, 
Database notUsed,
-                                Transaction metaDataTransaction, DatabaseEntry 
key, DatabaseEntry value)
-                        {
-                            long messageId = LongBinding.entryToLong(key);
-                            upgradeMessage(messageId, oldContentDatabase, 
newContentDatabase, handler, metaDataTransaction,
-                                    metadataDatabase);
-                        }
-                    };
-                    new DatabaseTemplate(environment, OLD_META_DATA_DB_NAME, 
contentTransaction)
-                            .run(metaDataDatabaseOperation);
-                    LOGGER.info(metaDataDatabaseOperation.getRowCount() + " 
Message Content Entries");
-                }
+                    @Override
+                    public void processEntry(Database metadataDatabase, 
Database notUsed,
+                            Transaction metaDataTransaction, DatabaseEntry 
key, DatabaseEntry value)
+                    {
+                        long messageId = LongBinding.entryToLong(key);
+                        upgradeMessage(messageId, oldContentDatabase, 
newContentDatabase, handler, metaDataTransaction,
+                                metadataDatabase);
+                    }
+                };
+                new DatabaseTemplate(environment, OLD_META_DATA_DB_NAME, 
contentTransaction)
+                        .run(metaDataDatabaseOperation);
+                LOGGER.info(metaDataDatabaseOperation.getRowCount() + " 
Message Content Entries");
             };
             new DatabaseTemplate(environment, OLD_CONTENT_DB_NAME, 
NEW_CONTENT_DB_NAME, transaction).run(contentOperation);
             environment.removeDatabase(transaction, OLD_CONTENT_DB_NAME);
@@ -275,7 +266,7 @@ public class UpgradeFrom5To6 extends AbstractStoreUpgrade
      */
     private SortedMap<Integer, byte[]> getMessageData(final long messageId, 
final Database oldDatabase)
     {
-        TreeMap<Integer, byte[]> data = new TreeMap<Integer, byte[]>();
+        TreeMap<Integer, byte[]> data = new TreeMap<>();
 
         Cursor cursor = oldDatabase.openCursor(null, 
CursorConfig.READ_COMMITTED);
         try
@@ -438,7 +429,7 @@ public class UpgradeFrom5To6 extends AbstractStoreUpgrade
 
     private List<String> upgradeExchanges(Environment environment, Transaction 
transaction, final String virtualHostName)
     {
-        final List<String> exchangeNames = new ArrayList<String>();
+        final List<String> exchangeNames = new ArrayList<>();
         LOGGER.info("Exchanges");
         if (environment.getDatabaseNames().contains(OLD_EXCHANGE_DB_NAME))
         {
@@ -475,7 +466,7 @@ public class UpgradeFrom5To6 extends AbstractStoreUpgrade
 
     private List<String> upgradeQueues(Environment environment, Transaction 
transaction, final String virtualHostName)
     {
-        final List<String> queueNames = new ArrayList<String>();
+        final List<String> queueNames = new ArrayList<>();
         LOGGER.info("Queues");
         if (environment.getDatabaseNames().contains(OLD_QUEUE_DB_NAME))
         {
@@ -532,7 +523,7 @@ public class UpgradeFrom5To6 extends AbstractStoreUpgrade
             String owner, boolean exclusive, FieldTable arguments)
     {
 
-        Map<String, Object> attributesMap = new HashMap<String, Object>();
+        Map<String, Object> attributesMap = new HashMap<>();
         attributesMap.put(Queue.NAME, queueName);
         attributesMap.put(Queue.EXCLUSIVE, exclusive);
 
@@ -569,7 +560,7 @@ public class UpgradeFrom5To6 extends AbstractStoreUpgrade
     private UpgradeConfiguredObjectRecord 
createExchangeConfiguredObjectRecord(String exchangeName, String exchangeType,
             boolean autoDelete)
     {
-        Map<String, Object> attributesMap = new HashMap<String, Object>();
+        Map<String, Object> attributesMap = new HashMap<>();
         attributesMap.put(Exchange.NAME, exchangeName);
         attributesMap.put(Exchange.TYPE, exchangeType);
         attributesMap.put(Exchange.LIFETIME_POLICY, autoDelete ? "AUTO_DELETE"
@@ -582,7 +573,7 @@ public class UpgradeFrom5To6 extends AbstractStoreUpgrade
     private UpgradeConfiguredObjectRecord 
createBindingConfiguredObjectRecord(String exchangeName, String queueName,
             String routingKey, FieldTable arguments, String virtualHostName)
     {
-        Map<String, Object> attributesMap = new HashMap<String, Object>();
+        Map<String, Object> attributesMap = new HashMap<>();
         attributesMap.put("name", routingKey);
         attributesMap.put("exchange", 
UUIDGenerator.generateExchangeUUID(exchangeName, virtualHostName));
         attributesMap.put("queue", UUIDGenerator.generateQueueUUID(queueName, 
virtualHostName));
diff --git 
a/bdbstore/src/main/java/org/apache/qpid/server/store/berkeleydb/upgrade/UpgradeFrom7To8.java
 
b/bdbstore/src/main/java/org/apache/qpid/server/store/berkeleydb/upgrade/UpgradeFrom7To8.java
index 0545d7186a..7de466f5ee 100644
--- 
a/bdbstore/src/main/java/org/apache/qpid/server/store/berkeleydb/upgrade/UpgradeFrom7To8.java
+++ 
b/bdbstore/src/main/java/org/apache/qpid/server/store/berkeleydb/upgrade/UpgradeFrom7To8.java
@@ -22,7 +22,7 @@ package org.apache.qpid.server.store.berkeleydb.upgrade;
 
 import java.io.IOException;
 import java.io.StringWriter;
-import java.nio.charset.Charset;
+import java.nio.charset.StandardCharsets;
 import java.util.HashMap;
 import java.util.Map;
 import java.util.UUID;
@@ -57,22 +57,22 @@ import com.sleepycat.je.Transaction;
 
 public class UpgradeFrom7To8 extends AbstractStoreUpgrade
 {
-    private static final TypeReference<HashMap<String, Object>> 
MAP_TYPE_REFERENCE = new TypeReference<HashMap<String,Object>>(){};
+    private static final TypeReference<HashMap<String, Object>> 
MAP_TYPE_REFERENCE = new TypeReference<>()
+    {
+    };
 
-    private static final DatabaseEntry MESSAGE_METADATA_SEQ_KEY = new 
DatabaseEntry("MESSAGE_METADATA_SEQ_KEY".getBytes(Charset.forName("UTF-8")));
+    private static final DatabaseEntry MESSAGE_METADATA_SEQ_KEY =
+            new 
DatabaseEntry("MESSAGE_METADATA_SEQ_KEY".getBytes(StandardCharsets.UTF_8));
 
     private static final SequenceConfig MESSAGE_METADATA_SEQ_CONFIG = 
SequenceConfig.DEFAULT.
                 setAllowCreate(true).
                 setWrap(true).
                 setCacheSize(100000);
 
-    private final Map<String, String> _defaultExchanges = new HashMap<String, 
String>()
-    {{
-        put("amq.direct", "direct");
-        put("amq.topic", "topic");
-        put("amq.fanout", "fanout");
-        put("amq.match", "headers");
-    }};
+    private final Map<String, String> _defaultExchanges = Map.of("amq.direct", 
"direct",
+            "amq.topic", "topic",
+            "amq.fanout", "fanout",
+            "amq.match", "headers");
 
     @Override
     public void performUpgrade(Environment environment, 
UpgradeInteractionHandler handler, ConfiguredObject<?> parent)
@@ -103,7 +103,7 @@ public class UpgradeFrom7To8 extends AbstractStoreUpgrade
         configVersionDb.close();
 
         String virtualHostName = parent.getName();
-        Map<String, Object> virtualHostAttributes = new HashMap<String, 
Object>();
+        Map<String, Object> virtualHostAttributes = new HashMap<>();
         virtualHostAttributes.put("modelVersion", stringifiedConfigVersion);
         virtualHostAttributes.put("name", virtualHostName);
         UUID virtualHostId = UUIDGenerator.generateVhostUUID(virtualHostName);
@@ -202,7 +202,7 @@ public class UpgradeFrom7To8 extends AbstractStoreUpgrade
         for (Map.Entry<String, String> defaultExchangeEntry : 
_defaultExchanges.entrySet())
         {
             UUID id = 
UUIDGenerator.generateExchangeUUID(defaultExchangeEntry.getKey(), 
virtualHostName);
-            Map<String, Object> exchangeAttributes = new HashMap<String, 
Object>();
+            Map<String, Object> exchangeAttributes = new HashMap<>();
             exchangeAttributes.put("name", defaultExchangeEntry.getKey());
             exchangeAttributes.put("type", defaultExchangeEntry.getValue());
             exchangeAttributes.put("lifetimePolicy", "PERMANENT");
diff --git 
a/bdbstore/src/main/java/org/apache/qpid/server/store/berkeleydb/upgrade/UpgradeInteractionHandler.java
 
b/bdbstore/src/main/java/org/apache/qpid/server/store/berkeleydb/upgrade/UpgradeInteractionHandler.java
index c3f3ebefbb..74212b5096 100644
--- 
a/bdbstore/src/main/java/org/apache/qpid/server/store/berkeleydb/upgrade/UpgradeInteractionHandler.java
+++ 
b/bdbstore/src/main/java/org/apache/qpid/server/store/berkeleydb/upgrade/UpgradeInteractionHandler.java
@@ -25,14 +25,6 @@ public interface UpgradeInteractionHandler
     UpgradeInteractionResponse requireResponse(String question, 
UpgradeInteractionResponse defaultResponse,
                                                UpgradeInteractionResponse... 
possibleResponses);
 
-    public static final UpgradeInteractionHandler DEFAULT_HANDLER = new 
UpgradeInteractionHandler()
-    {
-        @Override
-        public UpgradeInteractionResponse requireResponse(final String 
question,
-                                                          final 
UpgradeInteractionResponse defaultResponse,
-                                                          final 
UpgradeInteractionResponse... possibleResponses)
-        {
-            return defaultResponse;
-        }
-    };
+    public static final UpgradeInteractionHandler DEFAULT_HANDLER =
+            (question, defaultResponse, possibleResponses) -> defaultResponse;
 }
diff --git 
a/bdbstore/src/main/java/org/apache/qpid/server/virtualhostnode/berkeleydb/BDBHARemoteReplicationNodeImpl.java
 
b/bdbstore/src/main/java/org/apache/qpid/server/virtualhostnode/berkeleydb/BDBHARemoteReplicationNodeImpl.java
index 946e2b7996..16fda98fbc 100644
--- 
a/bdbstore/src/main/java/org/apache/qpid/server/virtualhostnode/berkeleydb/BDBHARemoteReplicationNodeImpl.java
+++ 
b/bdbstore/src/main/java/org/apache/qpid/server/virtualhostnode/berkeleydb/BDBHARemoteReplicationNodeImpl.java
@@ -43,7 +43,6 @@ import 
org.apache.qpid.server.logging.subjects.GroupLogSubject;
 import org.apache.qpid.server.model.AbstractConfiguredObject;
 import org.apache.qpid.server.model.Broker;
 import org.apache.qpid.server.model.ConfiguredObject;
-import org.apache.qpid.server.model.IllegalStateTransitionException;
 import org.apache.qpid.server.model.ManagedAttributeField;
 import org.apache.qpid.server.model.State;
 import 
org.apache.qpid.server.store.berkeleydb.replication.ReplicatedEnvironmentFacade;
diff --git 
a/bdbstore/src/main/java/org/apache/qpid/server/virtualhostnode/berkeleydb/BDBHAVirtualHostNodeImpl.java
 
b/bdbstore/src/main/java/org/apache/qpid/server/virtualhostnode/berkeleydb/BDBHAVirtualHostNodeImpl.java
index c1a875c03f..114cc41bbb 100644
--- 
a/bdbstore/src/main/java/org/apache/qpid/server/virtualhostnode/berkeleydb/BDBHAVirtualHostNodeImpl.java
+++ 
b/bdbstore/src/main/java/org/apache/qpid/server/virtualhostnode/berkeleydb/BDBHAVirtualHostNodeImpl.java
@@ -300,7 +300,7 @@ public class BDBHAVirtualHostNodeImpl extends 
AbstractVirtualHostNode<BDBHAVirtu
         if (!isFirstNodeInAGroup())
         {
             List<String> permittedNodes = new 
ArrayList<>(getPermittedNodesFromHelper());
-            setAttributes(Collections.<String, 
Object>singletonMap(PERMITTED_NODES, permittedNodes));
+            setAttributes(Collections.singletonMap(PERMITTED_NODES, 
permittedNodes));
         }
     }
 
@@ -384,7 +384,7 @@ public class BDBHAVirtualHostNodeImpl extends 
AbstractVirtualHostNode<BDBHAVirtu
         final SettableFuture<Void> returnVal = SettableFuture.create();
 
         ListenableFuture<Void> superFuture = super.doStop();
-        addFutureCallback(superFuture, new FutureCallback<Void>()
+        addFutureCallback(superFuture, new FutureCallback<>()
         {
             @Override
             public void onSuccess(final Void result)
@@ -413,7 +413,6 @@ public class BDBHAVirtualHostNodeImpl extends 
AbstractVirtualHostNode<BDBHAVirtu
                 {
                     returnVal.set(null);
                 }
-
             }
         }, getTaskExecutor());
         return returnVal;
@@ -482,7 +481,7 @@ public class BDBHAVirtualHostNodeImpl extends 
AbstractVirtualHostNode<BDBHAVirtu
 
     private Set<InetSocketAddress> getRemoteNodeAddresses()
     {
-        Set<InetSocketAddress> helpers = new HashSet<InetSocketAddress>();
+        Set<InetSocketAddress> helpers = new HashSet<>();
         @SuppressWarnings("rawtypes")
         Collection<? extends RemoteReplicationNode> remoteNodes = 
getRemoteReplicationNodes();
         for (RemoteReplicationNode<?> node : remoteNodes)
@@ -497,16 +496,7 @@ public class BDBHAVirtualHostNodeImpl extends 
AbstractVirtualHostNode<BDBHAVirtu
     @Override
     protected ListenableFuture<Void> onClose()
     {
-        return doAfterAlways(super.onClose(),
-                             new Runnable()
-                             {
-                                 @Override
-                                 public void run()
-                                 {
-                                     closeEnvironment();
-                                 }
-                             });
-
+        return doAfterAlways(super.onClose(), this::closeEnvironment);
     }
 
     @Override
@@ -626,7 +616,7 @@ public class BDBHAVirtualHostNodeImpl extends 
AbstractVirtualHostNode<BDBHAVirtu
                 ConfiguredObjectRecord[] initialRecords = getInitialRecords();
                 
if(upgraderAndRecoverer.upgradeAndRecover(getConfigurationStore(), 
initialRecords))
                 {
-                    setAttributes(Collections.<String, 
Object>singletonMap(VIRTUALHOST_INITIAL_CONFIGURATION, "{}"));
+                    
setAttributes(Collections.singletonMap(VIRTUALHOST_INITIAL_CONFIGURATION, 
"{}"));
                     firstOpening = initialRecords.length == 0;
                 }
 
@@ -665,14 +655,10 @@ public class BDBHAVirtualHostNodeImpl extends 
AbstractVirtualHostNode<BDBHAVirtu
                 {
                     ((QueueManagingVirtualHost<?>) 
recoveredHost).setFirstOpening(firstOpening);
                 }
-                Subject.doAs(getSubjectWithAddedSystemRights(), new 
PrivilegedAction<Object>()
+                Subject.doAs(getSubjectWithAddedSystemRights(), 
(PrivilegedAction<Object>) () ->
                 {
-                    @Override
-                    public Object run()
-                    {
-                        recoveredHost.open();
-                        return null;
-                    }
+                    recoveredHost.open();
+                    return null;
                 });
             }
             success = true;
@@ -1124,14 +1110,10 @@ public class BDBHAVirtualHostNodeImpl extends 
AbstractVirtualHostNode<BDBHAVirtu
         @Override
         public void onNodeState(final ReplicationNode node, final NodeState 
nodeState)
         {
-            Subject.doAs(getSystemTaskSubject(_virtualHostNodePrincipalName), 
new PrivilegedAction<Void>()
+            Subject.doAs(getSystemTaskSubject(_virtualHostNodePrincipalName), 
(PrivilegedAction<Void>) () ->
             {
-                @Override
-                public Void run()
-                {
-                    processNodeState(node, nodeState);
-                    return null;
-                }
+                processNodeState(node, nodeState);
+                return null;
             });
         }
 
@@ -1181,7 +1163,7 @@ public class BDBHAVirtualHostNodeImpl extends 
AbstractVirtualHostNode<BDBHAVirtu
                             {
                                 if 
(_permittedNodes.contains(remoteNode.getAddress()))
                                 {
-                                    setAttributes(Collections.<String, 
Object>singletonMap(PERMITTED_NODES, new ArrayList<>(permittedNodes)));
+                                    
setAttributes(Collections.singletonMap(PERMITTED_NODES, new 
ArrayList<>(permittedNodes)));
                                 } else
                                 {
                                     LOGGER.warn("Cannot accept the new 
permitted node list from the master as the master '" + remoteNode.getName()
@@ -1212,15 +1194,8 @@ public class BDBHAVirtualHostNodeImpl extends 
AbstractVirtualHostNode<BDBHAVirtu
         @Override
         public boolean onIntruderNode(final ReplicationNode node)
         {
-            return 
Subject.doAs(getSystemTaskSubject(_virtualHostNodePrincipalName), new 
PrivilegedAction<Boolean>()
-            {
-                @Override
-                public Boolean run()
-                {
-                    return processIntruderNode(node);
-
-                }
-            });
+            return 
Subject.doAs(getSystemTaskSubject(_virtualHostNodePrincipalName), 
(PrivilegedAction<Boolean>) () ->
+                    processIntruderNode(node));
         }
 
         private boolean processIntruderNode(final ReplicationNode node)
@@ -1314,7 +1289,7 @@ public class BDBHAVirtualHostNodeImpl extends 
AbstractVirtualHostNode<BDBHAVirtu
 
         private Map<String, Object> nodeToAttributes(ReplicationNode 
replicationNode)
         {
-            Map<String, Object> attributes = new HashMap<String, Object>();
+            Map<String, Object> attributes = new HashMap<>();
             attributes.put(ConfiguredObject.NAME, replicationNode.getName());
             attributes.put(ConfiguredObject.DURABLE, false);
             attributes.put(BDBHARemoteReplicationNode.ADDRESS, 
replicationNode.getHostName() + ":" + replicationNode.getPort());
@@ -1330,18 +1305,14 @@ public class BDBHAVirtualHostNodeImpl extends 
AbstractVirtualHostNode<BDBHAVirtu
         final State initialState = getState();
 
 
-        ListenableFuture<Void> future = 
doAfterAlways(stopAndSetStateTo(State.ERRORED), new Runnable()
+        ListenableFuture<Void> future = 
doAfterAlways(stopAndSetStateTo(State.ERRORED), () ->
         {
-            @Override
-            public void run()
-            {
-                _lastRole.set(NodeRole.DETACHED);
-                attributeSet(ROLE, _role, NodeRole.DETACHED);
-                notifyStateChanged(initialState, State.ERRORED);
-            }
+            _lastRole.set(NodeRole.DETACHED);
+            attributeSet(ROLE, _role, NodeRole.DETACHED);
+            notifyStateChanged(initialState, State.ERRORED);
         });
 
-        addFutureCallback(future, new FutureCallback<Void>()
+        addFutureCallback(future, new FutureCallback<>()
         {
             @Override
             public void onSuccess(final Void result)
@@ -1368,14 +1339,10 @@ public class BDBHAVirtualHostNodeImpl extends 
AbstractVirtualHostNode<BDBHAVirtu
         @Override
         public Void execute()
         {
-            return 
Subject.doAs(getSystemTaskSubject(_virtualHostNodePrincipalName), new 
PrivilegedAction<Void>()
+            return 
Subject.doAs(getSystemTaskSubject(_virtualHostNodePrincipalName), 
(PrivilegedAction<Void>) () ->
             {
-                @Override
-                public Void run()
-                {
-                    perform();
-                    return null;
-                }
+                perform();
+                return null;
             });
         }
 
diff --git 
a/bdbstore/src/test/java/org/apache/qpid/server/store/berkeleydb/BDBHAVirtualHostNodeTest.java
 
b/bdbstore/src/test/java/org/apache/qpid/server/store/berkeleydb/BDBHAVirtualHostNodeTest.java
index abfe7eee67..513793651e 100644
--- 
a/bdbstore/src/test/java/org/apache/qpid/server/store/berkeleydb/BDBHAVirtualHostNodeTest.java
+++ 
b/bdbstore/src/test/java/org/apache/qpid/server/store/berkeleydb/BDBHAVirtualHostNodeTest.java
@@ -513,14 +513,14 @@ public class BDBHAVirtualHostNodeTest extends UnitTestBase
         _helper.awaitRemoteNodes(node1, 2);
 
         // Create new "proposed" permitted nodes list with a current node 
missing
-        List<String> amendedPermittedNodes = new ArrayList<String>();
+        List<String> amendedPermittedNodes = new ArrayList<>();
         amendedPermittedNodes.add(node1Address);
         amendedPermittedNodes.add(node2Address);
 
         // Try to update the permitted nodes attributes using the new list
         try
         {
-            node1.setAttributes(Collections.<String, 
Object>singletonMap(BDBHAVirtualHostNode.PERMITTED_NODES, 
amendedPermittedNodes));
+            
node1.setAttributes(Collections.singletonMap(BDBHAVirtualHostNode.PERMITTED_NODES,
 amendedPermittedNodes));
             fail("Operation to remove current group node from permitted nodes 
should have failed");
         }
         catch(IllegalArgumentException e)
@@ -561,7 +561,7 @@ public class BDBHAVirtualHostNodeTest extends UnitTestBase
         _helper.awaitRemoteNodes(node1, 2);
 
         // Create new "proposed" permitted nodes list for update
-        List<String> amendedPermittedNodes = new ArrayList<String>();
+        List<String> amendedPermittedNodes = new ArrayList<>();
         amendedPermittedNodes.add(node1Address);
         amendedPermittedNodes.add(node2Address);
         amendedPermittedNodes.add(node3Address);
diff --git 
a/bdbstore/src/test/java/org/apache/qpid/server/store/berkeleydb/BDBPreferenceStoreTest.java
 
b/bdbstore/src/test/java/org/apache/qpid/server/store/berkeleydb/BDBPreferenceStoreTest.java
index 06c9385381..9741220254 100644
--- 
a/bdbstore/src/test/java/org/apache/qpid/server/store/berkeleydb/BDBPreferenceStoreTest.java
+++ 
b/bdbstore/src/test/java/org/apache/qpid/server/store/berkeleydb/BDBPreferenceStoreTest.java
@@ -207,7 +207,7 @@ public class BDBPreferenceStoreTest extends UnitTestBase
     {
         try
         {
-            _preferenceStore.replace(Collections.<UUID>emptyList(), 
Collections.emptyList());
+            _preferenceStore.replace(Collections.emptyList(), 
Collections.emptyList());
             fail("Should not be able to replace");
         }
         catch (IllegalStateException e)
diff --git 
a/bdbstore/src/test/java/org/apache/qpid/server/store/berkeleydb/BDBStoreUpgradeTestPreparer.java
 
b/bdbstore/src/test/java/org/apache/qpid/server/store/berkeleydb/BDBStoreUpgradeTestPreparer.java
index 477f6ca7ac..4b3320b6e2 100644
--- 
a/bdbstore/src/test/java/org/apache/qpid/server/store/berkeleydb/BDBStoreUpgradeTestPreparer.java
+++ 
b/bdbstore/src/test/java/org/apache/qpid/server/store/berkeleydb/BDBStoreUpgradeTestPreparer.java
@@ -168,7 +168,7 @@ public class BDBStoreUpgradeTestPreparer
 
         session = connection.createSession(true,  Session.SESSION_TRANSACTED);
         // Create a priority queue on broker
-        final Map<String,Object> priorityQueueArguments = new HashMap<String, 
Object>();
+        final Map<String,Object> priorityQueueArguments = new HashMap<>();
         
priorityQueueArguments.put(QueueArgumentsConverter.X_QPID_PRIORITIES,10);
         Queue priorityQueue = createAndBindQueueOnBroker(session, 
PRIORITY_QUEUE_NAME, priorityQueueArguments);
         MessageProducer priorityQueueProducer = 
session.createProducer(priorityQueue);
@@ -184,7 +184,7 @@ public class BDBStoreUpgradeTestPreparer
         priorityQueueProducer.close();
 
         // Create a queue that has a DLQ
-        final Map<String,Object> queueWithDLQArguments = new HashMap<String, 
Object>();
+        final Map<String,Object> queueWithDLQArguments = new HashMap<>();
         queueWithDLQArguments.put("x-qpid-dlq-enabled", true);
         queueWithDLQArguments.put("x-qpid-maximum-delivery-count", 2);
         createAndBindQueueOnBroker(session, QUEUE_WITH_DLQ_NAME, 
queueWithDLQArguments);
diff --git 
a/bdbstore/src/test/java/org/apache/qpid/server/store/berkeleydb/replication/ReplicatedEnvironmentFacadeTest.java
 
b/bdbstore/src/test/java/org/apache/qpid/server/store/berkeleydb/replication/ReplicatedEnvironmentFacadeTest.java
index 755d3f3dec..253f238179 100644
--- 
a/bdbstore/src/test/java/org/apache/qpid/server/store/berkeleydb/replication/ReplicatedEnvironmentFacadeTest.java
+++ 
b/bdbstore/src/test/java/org/apache/qpid/server/store/berkeleydb/replication/ReplicatedEnvironmentFacadeTest.java
@@ -22,7 +22,17 @@ package org.apache.qpid.server.store.berkeleydb.replication;
 
 import static 
org.apache.qpid.server.store.berkeleydb.EnvironmentFacade.JUL_LOGGER_LEVEL_OVERRIDE;
 import static 
org.apache.qpid.server.store.berkeleydb.EnvironmentFacade.LOG_HANDLER_CLEANER_PROTECTED_FILES_LIMIT_PROPERTY_NAME;
-import static 
org.apache.qpid.server.store.berkeleydb.replication.ReplicatedEnvironmentFacade.*;
+import static 
org.apache.qpid.server.store.berkeleydb.replication.ReplicatedEnvironmentFacade.DB_PING_SOCKET_TIMEOUT_PROPERTY_NAME;
+import static 
org.apache.qpid.server.store.berkeleydb.replication.ReplicatedEnvironmentFacade.DISABLE_COALESCING_COMMITTER_PROPERTY_NAME;
+import static 
org.apache.qpid.server.store.berkeleydb.replication.ReplicatedEnvironmentFacade.ENVIRONMENT_RESTART_RETRY_LIMIT_PROPERTY_NAME;
+import static 
org.apache.qpid.server.store.berkeleydb.replication.ReplicatedEnvironmentFacade.EXECUTOR_SHUTDOWN_TIMEOUT_PROPERTY_NAME;
+import static 
org.apache.qpid.server.store.berkeleydb.replication.ReplicatedEnvironmentFacade.MASTER_TRANSFER_TIMEOUT_PROPERTY_NAME;
+import static 
org.apache.qpid.server.store.berkeleydb.replication.ReplicatedEnvironmentFacade.NO_SYNC_TX_DURABILITY_PROPERTY_NAME;
+import static 
org.apache.qpid.server.store.berkeleydb.replication.ReplicatedEnvironmentFacade.PERMITTED_NODE_LIST;
+import static 
org.apache.qpid.server.store.berkeleydb.replication.ReplicatedEnvironmentFacade.REMOTE_NODE_MONITOR_INTERVAL_PROPERTY_NAME;
+import static 
org.apache.qpid.server.store.berkeleydb.replication.ReplicatedEnvironmentFacade.REMOTE_NODE_MONITOR_TIMEOUT_PROPERTY_NAME;
+import static 
org.apache.qpid.server.store.berkeleydb.replication.ReplicatedEnvironmentFacade.ReplicationNodeImpl;
+import static 
org.apache.qpid.server.store.berkeleydb.replication.ReplicatedEnvironmentFacade.getRemoteNodeState;
 import static 
org.apache.qpid.server.virtualhost.berkeleydb.BDBVirtualHost.DEFAULT_QPID_BROKER_BDB_COMMITER_NOTIFY_THRESHOLD;
 import static 
org.apache.qpid.server.virtualhost.berkeleydb.BDBVirtualHost.DEFAULT_QPID_BROKER_BDB_COMMITER_WAIT_TIMEOUT;
 import static 
org.apache.qpid.server.virtualhost.berkeleydb.BDBVirtualHost.QPID_BROKER_BDB_COMMITER_NOTIFY_THRESHOLD;
@@ -878,7 +888,8 @@ public class ReplicatedEnvironmentFacadeTest extends 
UnitTestBase
         permittedNodes.add("localhost:" + _portHelper.getNextAvailable());
         firstNode.setPermittedNodes(permittedNodes);
 
-        ReplicationNodeImpl replicationNode = new 
ReplicationNodeImpl(TEST_NODE_NAME, TEST_NODE_HOST_PORT);
+        ReplicationNodeImpl
+                replicationNode = new ReplicationNodeImpl(TEST_NODE_NAME, 
TEST_NODE_HOST_PORT);
         NodeState nodeState = getRemoteNodeState(TEST_GROUP_NAME, 
replicationNode, 5000);
 
         ObjectMapper objectMapper = new ObjectMapper();
diff --git 
a/bdbstore/src/test/java/org/apache/qpid/server/store/berkeleydb/upgrade/UpgraderTest.java
 
b/bdbstore/src/test/java/org/apache/qpid/server/store/berkeleydb/upgrade/UpgraderTest.java
index d8f9547767..1c0d7ed13a 100644
--- 
a/bdbstore/src/test/java/org/apache/qpid/server/store/berkeleydb/upgrade/UpgraderTest.java
+++ 
b/bdbstore/src/test/java/org/apache/qpid/server/store/berkeleydb/upgrade/UpgraderTest.java
@@ -108,7 +108,7 @@ public class UpgraderTest extends AbstractUpgradeTestCase
             _upgrader.upgradeIfNecessary();
 
             List<String> databaseNames = emptyEnvironment.getDatabaseNames();
-            List<String> expectedDatabases = new ArrayList<String>();
+            List<String> expectedDatabases = new ArrayList<>();
             expectedDatabases.add(Upgrader.VERSION_DB_NAME);
             assertEquals(expectedDatabases, databaseNames,
                          "Expectedonly VERSION table in initially empty store 
after upgrade: ");


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