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This exception has no message.
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java.lang.NullPointerException at javax.swing.RepaintManager.currentManager(RepaintManager.java:262) at javax.swing.JComponent.repaint(JComponent.java:4799) at java.awt.Component.repaint(Component.java:3303) at javax.swing.JComponent.setFont(JComponent.java:2756) at javax.swing.LookAndFeel.installColorsAndFont(LookAndFeel.java:208) at javax.swing.plaf.basic.BasicPanelUI.installDefaults(BasicPanelUI.java:66) at javax.swing.plaf.basic.BasicPanelUI.installUI(BasicPanelUI.java:56) at javax.swing.JComponent.setUI(JComponent.java:664) at javax.swing.JPanel.setUI(JPanel.java:153) at javax.swing.JPanel.updateUI(JPanel.java:126) at javax.swing.JPanel.<init>(JPanel.java:86) at javax.swing.JPanel.<init>(JPanel.java:109) at javax.swing.JPanel.<init>(JPanel.java:117) at lukemoll.MyClass.<init>(MyClass.java:15)