Problem in using cofoja with Eclipse Mars

[Max Pei]

Hi there, I know this seems like an old problem, but I still cannot get cofoja correctly configured on my machine (Windows 8, Eclipse Mars 4.5.0, JDK 1.8). The error message I got is:

Errors occurred during the build.
Errors running builder ‘Java Builder’ on project ‘cofoja2’.
java.lang.NullPointerException

The trace:

java.lang.NullPointerException
at com.google.java.contract.core.apt.AnnotationProcessor.getJavacOptions(AnnotationProcessor.java:174)
at com.google.java.contract.core.apt.AnnotationProcessor.setupPaths(AnnotationProcessor.java:268)
at com.google.java.contract.core.apt.AnnotationProcessor.init(AnnotationProcessor.java:201)
at org.eclipse.jdt.internal.apt.pluggable.core.dispatch.IdeAnnotationProcessorManager.discoverNextProcessor(IdeAnnotationProcessorManager.java:93)
at org.eclipse.jdt.internal.compiler.apt.dispatch.RoundDispatcher.round(RoundDispatcher.java:116)
at org.eclipse.jdt.internal.compiler.apt.dispatch.BaseAnnotationProcessorManager.processAnnotations(BaseAnnotationProcessorManager.java:159)
at org.eclipse.jdt.internal.apt.pluggable.core.dispatch.IdeAnnotationProcessorManager.processAnnotations(IdeAnnotationProcessorManager.java:134)
at org.eclipse.jdt.internal.compiler.Compiler.processAnnotations(Compiler.java:909)
at org.eclipse.jdt.internal.compiler.Compiler.compile(Compiler.java:434)
at org.eclipse.jdt.internal.core.builder.AbstractImageBuilder.compile(AbstractImageBuilder.java:367)
at org.eclipse.jdt.internal.core.builder.BatchImageBuilder.compile(BatchImageBuilder.java:179)
at org.eclipse.jdt.internal.core.builder.AbstractImageBuilder.compile(AbstractImageBuilder.java:304)
at org.eclipse.jdt.internal.core.builder.BatchImageBuilder.build(BatchImageBuilder.java:61)
at org.eclipse.jdt.internal.core.builder.JavaBuilder.buildAll(JavaBuilder.java:256)
at org.eclipse.jdt.internal.core.builder.JavaBuilder.build(JavaBuilder.java:180)
at org.eclipse.core.internal.events.BuildManager$2.run(BuildManager.java:734)
at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:205)
at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:245)
at org.eclipse.core.internal.events.BuildManager$1.run(BuildManager.java:300)
at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:303)
at org.eclipse.core.internal.events.BuildManager.basicBuildLoop(BuildManager.java:359)
at org.eclipse.core.internal.events.BuildManager.build(BuildManager.java:382)
at org.eclipse.core.internal.events.AutoBuildJob.doBuild(AutoBuildJob.java:144)
at org.eclipse.core.internal.events.AutoBuildJob.run(AutoBuildJob.java:235)
at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55)

and the session data:

eclipse.buildId=4.5.0.I20150603-2000
java.version=1.8.0_65
java.vendor=Oracle Corporation
BootLoader constants: OS=win32, ARCH=x86_64, WS=win32, NL=en_US
Framework arguments: -product org.eclipse.epp.package.java.product
Command-line arguments: -os win32 -ws win32 -arch x86_64 -product org.eclipse.epp.package.java.product

The problem looks like the problem reported in the following post about null pointer, 

    https://fsteeg.wordpress.com/2011/02/07/setting-up-contracts-for-java-in-eclipse/

and some suggested to use JVM from JDK instead of from JRE to run eclipse. I have set the ‘-vm …/jdk…/…’ in eclipse.ini and my jdk is not installed on a path with space in directory names, but it still doesn’t work.

I’m running out of ideas. Can anyone help? Thanks!

[Nhat Minh Lê]

Looking at the code, it seems it's simply missing a null check on line 173 in getJavacOptions. It should return null if javacProcessEnvironmentClass is null. Can you try with this change?
‎
I'm not home right now but ‎I'll take a look later, if you can't / don't want to build Cofoja. 

Nhat
‎

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