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java.lang.NullPointerException at java.awt.Container.addImpl(Container.java:625) at java.awt.Container.add(Container.java:307) at dataitem_03.PanelWinNumbers.jbInit(PanelWinNumbers.java:34) at dataitem_03.PanelWinNumbers.<init>(PanelWinNumbers.java:21) at dataitem_03.GUI.<init>(GUI.java:35) at dataitem_03.Application.<init>(Application.java:20) at dataitem_03.Application.main(Application.java:49)