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This bug was originally marked as duplicate of bug 196938, that is already resolved. This bug is still valid, so this seems to be another bug, but it might be related. Build: NetBeans IDE 7.4 (Build 201310111528) VM: OpenJDK Client VM, 23.7-b01, OpenJDK Runtime Environment, 1.7.0_25-b30 OS: Linux User Comments: gilmry: az az az az az az az az az az az az az Stacktrace: java.lang.NullPointerException at com.sun.source.util.TreePath.getPath(TreePath.java:55) at com.sun.source.util.TreePath.getPath(TreePath.java:46) at com.sun.tools.javac.api.JavacTrees.getPath(JavacTrees.java:317) at org.netbeans.modules.j2ee.core.api.support.java.SourceUtils.classTree2TypeElement(SourceUtils.java:164) at org.netbeans.modules.j2ee.core.api.support.java.GenerationUtils.ensureNoArgConstructor(GenerationUtils.java:359) at org.netbeans.modules.j2ee.persistence.wizard.entity.EntityWizard$1.run(EntityWizard.java:306)
Created attachment 144380 [details] stacktrace
org.netbeans.modules.j2ee.core.api.support.java.SourceUtils should not pass 'null' value as an argument to Trees.getPath(...). Reassigning.
Persistence -> reassigning.
This old bug may not be relevant anymore. If you can still reproduce it in 8.2 development builds please reopen this issue. Thanks for your cooperation, NetBeans IDE 8.2 Release Boss