[ https://issues.apache.org/jira/browse/SPARK-13702?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Dongjoon Hyun updated SPARK-13702: ---------------------------------- Description: Java 7 or higher supports `diamond` operator which replaces the type arguments required to invoke the constructor of a generic class with an empty set of type parameters (<>). Currently, Spark Java code use mixed usage of this. This issue replaces existing codes to use `diamond` operator and add Checkstyle rule. {code} -List<JavaPairDStream<String, String>> kafkaStreams = new ArrayList<JavaPairDStream<String, String>>(numStreams); +List<JavaPairDStream<String, String>> kafkaStreams = new ArrayList<>(numStreams); {code} {code} -Set<Tuple2<Integer, Integer>> edges = new HashSet<Tuple2<Integer, Integer>>(numEdges); +Set<Tuple2<Integer, Integer>> edges = new HashSet<>(numEdges); {code} *Reference* https://docs.oracle.com/javase/8/docs/technotes/guides/language/type-inference-generic-instance-creation.html was: Java 7 or higher supports `diamond` operator which replaces the type arguments required to invoke the constructor of a generic class with an empty set of type parameters (<>). Currently, Spark Java code use mixed usage of this. This issue replaces existing codes to use `diamond` operator and add Checkstyle rule. {code} -List<JavaPairDStream<String, String>> kafkaStreams = new ArrayList<JavaPairDStream<String, String>>(numStreams); +List<JavaPairDStream<String, String>> kafkaStreams = new ArrayList<>(numStreams); {code} {code} - Set<Tuple2<Integer, Integer>> edges = new HashSet<Tuple2<Integer, Integer>>(numEdges); + Set<Tuple2<Integer, Integer>> edges = new HashSet<>(numEdges); {code} *Reference* https://docs.oracle.com/javase/8/docs/technotes/guides/language/type-inference-generic-instance-creation.html > Use diamond operator for generic instance creation in Java code > --------------------------------------------------------------- > > Key: SPARK-13702 > URL: https://issues.apache.org/jira/browse/SPARK-13702 > Project: Spark > Issue Type: Improvement > Reporter: Dongjoon Hyun > Priority: Trivial > > Java 7 or higher supports `diamond` operator which replaces the type > arguments required to invoke the constructor of a generic class with an empty > set of type parameters (<>). Currently, Spark Java code use mixed usage of > this. This issue replaces existing codes to use `diamond` operator and add > Checkstyle rule. > {code} > -List<JavaPairDStream<String, String>> kafkaStreams = new > ArrayList<JavaPairDStream<String, String>>(numStreams); > +List<JavaPairDStream<String, String>> kafkaStreams = new > ArrayList<>(numStreams); > {code} > {code} > -Set<Tuple2<Integer, Integer>> edges = new HashSet<Tuple2<Integer, > Integer>>(numEdges); > +Set<Tuple2<Integer, Integer>> edges = new HashSet<>(numEdges); > {code} > *Reference* > https://docs.oracle.com/javase/8/docs/technotes/guides/language/type-inference-generic-instance-creation.html -- This message was sent by Atlassian JIRA (v6.3.4#6332) --------------------------------------------------------------------- To unsubscribe, e-mail: issues-unsubscr...@spark.apache.org For additional commands, e-mail: issues-h...@spark.apache.org