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This bug was originally marked as duplicate of bug 241142, 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, 25.60-b23, Java(TM) SE Runtime Environment, 1.8.0_60-b27 OS: Mac OS X User Comments: MorPheuZL: IDE became unresponsive and was using 300%+ CPU. ALl I did was copy and paste about 30 lines of code. Stacktrace: java.lang.OutOfMemoryError: Java heap space at java.lang.SecurityManager.getClassContext(SecurityManager.java:0) at org.netbeans.TopSecurityManager.checkPropertyAccess(TopSecurityManager.java:278) at java.lang.System.getProperty(System.java:717) at org.netbeans.Stamps.produceRelativePath(Stamps.java:988) at org.netbeans.Stamps.findRelativePath(Stamps.java:1021) at org.netbeans.JarClassLoader$JarSource.getIdentifier(JarClassLoader.java:869)
Created attachment 161834 [details] stacktrace
Retained size of com.apple.laf.AquaTabbedPaneContrastUI#2 is 222,104,310 bytes. This memory leak is caused by JDK bug JDK-8017284 https://bugs.openjdk.java.net/browse/JDK-8017284 *** This bug has been marked as a duplicate of bug 230493 ***