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This issue was reported manually by ralphbenjamin. It already has 1 duplicates Build: NetBeans IDE Dev (Build 20150216-b908c3736238) VM: Java HotSpot(TM) 64-Bit Server VM, 24.76-b04, Java(TM) SE Runtime Environment, 1.7.0_76-b13 OS: Linux User Comments: GUEST: Run single test method Stacktrace: java.lang.NoSuchMethodError: java.util.Collection.iteratOr()Ljava/util/Iterator; at org.netbeans.modules.gsf.testrunner.ui.ResultWindow.setOrientation(ResultWindow.java:301) at org.netbeans.modules.gsf.testrunner.ui.api.Manager.updateDisplayHandlerLayouts(Manager.java:236) at org.netbeans.modules.gsf.testrunner.ui.api.Manager.access$000(Manager.java:91) at org.netbeans.modules.gsf.testrunner.ui.api.Manager$2.ancestorRemoved(Manager.java:213) at javax.swing.AncestorNotifier.fireAncestorRemoved(AncestorNotifier.java:107) at javax.swing.AncestorNotifier.componentHidden(AncestorNotifier.java:207)
Created attachment 152011 [details] stacktrace
I cannot reproduce in NetBeans IDE Dev (Build 20150914-448dc3b109e9). Probably some sync/build problem with compiled and run jars in dev version?