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This bug was originally marked as duplicate of bug 247660, that is already resolved. This bug is still valid, so this seems to be another bug, but it might be related. Build: NetBeans IDE 8.1 (Build 201510222201) VM: Java HotSpot(TM) 64-Bit Server VM, 25.65-b01, Java(TM) SE Runtime Environment, 1.8.0_65-b17 OS: Windows 10 User Comments: GUEST: I installed the jdk and netbeans, tried to run my first program, got this error Stacktrace: java.lang.UnsupportedOperationException: command: debug, JavaRunner impls: [] at org.netbeans.api.java.project.runner.JavaRunner.execute(JavaRunner.java:319) at org.netbeans.modules.java.api.common.project.BaseActionProvider.bypassAntBuildScript(BaseActionProvider.java:1867) at org.netbeans.modules.java.api.common.project.BaseActionProvider.access$1400(BaseActionProvider.java:156) at org.netbeans.modules.java.api.common.project.BaseActionProvider$1Action.doRun(BaseActionProvider.java:538) at org.netbeans.modules.java.api.common.project.BaseActionProvider$1Action.run(BaseActionProvider.java:458) at org.netbeans.api.java.source.ui.ScanDialog.runWhenScanFinished(ScanDialog.java:153)
Created attachment 157860 [details] stacktrace
Seems a broken IDE userdir or installation, the implementation of JavaRunnerImplementation interface is missing. The IDE provides the ProjectRunnerImpl in org.netbeans.modules.java.source.ant module. Please delete the IDE userdir and start the IDE again.