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cannot add to layout: constraints must be a GridBagConstraint at java.awt.GridBagLayout.addLayoutComponent(
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adding container's parent to itself
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adding a window to a container
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via Oracle Community by 843798, 1 year ago
java.lang.IllegalArgumentException: adding a window to a container
at at	at java.awt.Container.addImpl(	at java.awt.Container.add(	at undefined.TheDealer.setupTable(	at undefined.TheDealer.(	at undefined.Portland.main(