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java.lang.NoClassDefFoundError: sun/tools/javac/Main at com.apple.mrj.tools.Javac.invokeCoreTool(Javac.java) at com.apple.mrj.tools.JDKTool.executeTool(JDKTool.java) at com.apple.mrj.tools.JDKTool.actionPerformed(JDKTool.java) at java.awt.Button.processActionEvent(Button.java) at java.awt.Button.processEvent(Button.java) at java.awt.Component.dispatchEventImpl(Component.java) at java.awt.Component.dispatchEvent(Component.java) at java.awt.EventDispatchThread.run(EventDispatchThread.java)