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via Stack Overflow by dominic.e
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This exception has no message.
via Oracle Community by mshoe, 2 years ago
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java.lang.NullPointerException at javax.swing.RepaintManager.currentManager( at javax.swing.JComponent.repaint( at java.awt.Component.repaint( at javax.swing.JComponent.setFont( at javax.swing.LookAndFeel.installColorsAndFont( at javax.swing.plaf.basic.BasicPanelUI.installDefaults( at javax.swing.plaf.basic.BasicPanelUI.installUI( at javax.swing.JComponent.setUI( at javax.swing.JPanel.setUI( at javax.swing.JPanel.updateUI( at javax.swing.JPanel.<init>( at javax.swing.JPanel.<init>( at javax.swing.JPanel.<init>( at lukemoll.MyClass.<init>(