This is asked and answered repeatedly on this list, plus it is very well documented on the Maven website.
http://maven.apache.org Plugins by category "compile" plugin At the bottom of that page is a couple links to example configs for specifying JDKs etc. Wayne On 4/20/07, Petr V. <[EMAIL PROTECTED]> wrote:
All, I have this project which successfully build with jdk1.5. Now I am trying to make project on build machine. This build machine does not have access to outside world so I copied all dependencies in C:\maven_repository and define the repository location in m2 folder. I hope it won't complain. Now this build machine has jdk1.4 and seems like that I can not use that and mvn 2 needs 1.5. My other projects want 1.4 . So even if Installed jdk1.5, how can I tell mvn to use jdk1.5 and not jdk 1.4. Any help is appreciated. Log is attached if the error is due to some other reason. Please have a look. Thanks C:\P4\NCP\main>mvn -e compile + Error stacktraces are turned on. [INFO] Scanning for projects... [INFO] Reactor build order: [INFO] The New CP Project [INFO] component [INFO] CPServer [INFO] Authentication Module [INFO] Core Module [INFO] Authorization Module [INFO] Inventory Module [INFO] Performance Module [INFO] CPWebService [INFO] ---------------------------------------------------------------------------- [INFO] Building The New CP Project [INFO] task-segment: [compile] [INFO] ---------------------------------------------------------------------------- [INFO] No goals needed for project - skipping [INFO] ---------------------------------------------------------------------------- [INFO] Building component [INFO] task-segment: [compile] [INFO] ---------------------------------------------------------------------------- [INFO] No goals needed for project - skipping [INFO] ---------------------------------------------------------------------------- [INFO] Building CPServer [INFO] task-segment: [compile] [INFO] ---------------------------------------------------------------------------- [INFO] No goals needed for project - skipping [INFO] ---------------------------------------------------------------------------- [INFO] Building Authentication Module [INFO] task-segment: [compile] [INFO] ---------------------------------------------------------------------------- [INFO] [resources:resources] [INFO] Using default encoding to copy filtered resources. Downloading: http://repo1.maven.org/maven2/axis/axis-jaxrpc/1.4/axis-jaxrpc-1.4.pom [WARNING] Unable to get resource 'axis:axis-jaxrpc:pom:1.4' from repository central (http://repo1.maven.org/maven2) [INFO] [compiler:compile] [INFO] Compiling 2 source files to C:\P4\NCP\main\component\CPServer\authn\target\classes [INFO] ------------------------------------------------------------------------ [ERROR] BUILD FAILURE [INFO] ------------------------------------------------------------------------ [INFO] Compilation failure Failure executing javac, but could not parse the error: javac: invalid target release: 1.5 Usage: javac <options> <source files> where possible options include: -g Generate all debugging info -g:none Generate no debugging info -g:{lines,vars,source} Generate only some debugging info -nowarn Generate no warnings -verbose Output messages about what the compiler is doing -deprecation Output source locations where deprecated APIs are used -classpath <path> Specify where to find user class files -sourcepath <path> Specify where to find input source files -bootclasspath <path> Override location of bootstrap class files -extdirs <dirs> Override location of installed extensions -d <directory> Specify where to place generated class files -encoding <encoding> Specify character encoding used by source files -source <release> Provide source compatibility with specified release -target <release> Generate class files for specific VM version -help Print a synopsis of standard options Failure executing javac, but could not parse the error: javac: invalid target release: 1.5 Usage: javac <options> <source files> where possible options include: -g Generate all debugging info -g:none Generate no debugging info -g:{lines,vars,source} Generate only some debugging info -nowarn Generate no warnings -verbose Output messages about what the compiler is doing -deprecation Output source locations where deprecated APIs are used -classpath <path> Specify where to find user class files -sourcepath <path> Specify where to find input source files -bootclasspath <path> Override location of bootstrap class files -extdirs <dirs> Override location of installed extensions -d <directory> Specify where to place generated class files -encoding <encoding> Specify character encoding used by source files -source <release> Provide source compatibility with specified release -target <release> Generate class files for specific VM version -help Print a synopsis of standard options [INFO] ------------------------------------------------------------------------ [INFO] Trace org.apache.maven.BuildFailureException: Compilation failure Failure executing javac, but could not parse the error: javac: invalid target release: 1.5 Usage: javac <options> <source files> where possible options include: -g Generate all debugging info -g:none Generate no debugging info -g:{lines,vars,source} Generate only some debugging info -nowarn Generate no warnings -verbose Output messages about what the compiler is doing -deprecation Output source locations where deprecated APIs are used -classpath <path> Specify where to find user class files -sourcepath <path> Specify where to find input source files -bootclasspath <path> Override location of bootstrap class files -extdirs <dirs> Override location of installed extensions -d <directory> Specify where to place generated class files -encoding <encoding> Specify character encoding used by source files -source <release> Provide source compatibility with specified release -target <release> Generate class files for specific VM version -help Print a synopsis of standard options at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoals(DefaultLifecycleExecutor.java:560) at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalWithLifecycle(DefaultLifecycleExecutor.java:480) at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoal(DefaultLifecycleExecutor.java:459) at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalAndHandleFailures(DefaultLifecycleExecutor.java:311) at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeTaskSegments(DefaultLifecycleExecutor.java:278) at org.apache.maven.lifecycle.DefaultLifecycleExecutor.execute(DefaultLifecycleExecutor.java:143) at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:330) at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:123) at org.apache.maven.cli.MavenCli.main(MavenCli.java:272) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:324) at org.codehaus.classworlds.Launcher.launchEnhanced(Launcher.java:315) at org.codehaus.classworlds.Launcher.launch(Launcher.java:255) at org.codehaus.classworlds.Launcher.mainWithExitCode(Launcher.java:430) at org.codehaus.classworlds.Launcher.main(Launcher.java:375) Caused by: org.apache.maven.plugin.CompilationFailureException: Compilation failure Failure executing javac, but could not parse the error: javac: invalid target release: 1.5 Usage: javac <options> <source files> where possible options include: -g Generate all debugging info -g:none Generate no debugging info -g:{lines,vars,source} Generate only some debugging info -nowarn Generate no warnings -verbose Output messages about what the compiler is doing -deprecation Output source locations where deprecated APIs are used -classpath <path> Specify where to find user class files -sourcepath <path> Specify where to find input source files -bootclasspath <path> Override location of bootstrap class files -extdirs <dirs> Override location of installed extensions -d <directory> Specify where to place generated class files -encoding <encoding> Specify character encoding used by source files -source <release> Provide source compatibility with specified release -target <release> Generate class files for specific VM version -help Print a synopsis of standard options at org.apache.maven.plugin.AbstractCompilerMojo.execute(AbstractCompilerMojo.java:516) at org.apache.maven.plugin.CompilerMojo.execute(CompilerMojo.java:114) at org.apache.maven.plugin.DefaultPluginManager.executeMojo(DefaultPluginManager.java:420) at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoals(DefaultLifecycleExecutor.java:539) ... 16 more [INFO] ------------------------------------------------------------------------ [INFO] Total time: 23 seconds [INFO] Finished at: Fri Apr 20 11:41:02 PDT 2007 [INFO] Final Memory: 5M/9M [INFO] ------------------------------------------------------------------------ C:\P4\NCP\main> --------------------------------- Ahhh...imagining that irresistible "new car" smell? 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