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via Oracle Community by 807587, 1 year ago
java.lang.NullPointerException: 	at javax.swing.plaf.basic.BasicTabbedPaneUI$TabbedPaneLayout.calculateSize(BasicTabbedPaneUI.java:1293)	at javax.swing.plaf.basic.BasicTabbedPaneUI$TabbedPaneLayout.preferredLayoutSize(BasicTabbedPaneUI.java:1272)	at java.awt.Container.preferredSize(Container.java:836)	at java.awt.Container.getPreferredSize(Container.java:820)	at javax.swing.JComponent.getPreferredSize(JComponent.java:1044)