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via daniweb.com by Unknown author, 2 years ago
java.lang.IllegalArgumentException: adding a window to a container	at java.awt.Container.addImpl(Container.java:616)	at java.awt.Container.add(Container.java:307)	at screenContainer.placeScreensOnContainer(screenContainer.java:158)	at screenContainer.setScreens(screenContainer.java:70)	at parseXMLFileTester.main(parseXMLFileTester.java:121)