JTabbedPane ArrayIndexOutOfBoundsException : 0

Question

Java Swing 응용 프로그램에서 탭 분할 창을 작성하려고하지만 작동하지 않습니다.

JTabbedPane을 contentpane으로 설정하면 모든 것이 잘됩니다. 탭을 추가하려고하면 ArrayIndexOutOfBoundsException: 0이 표시됩니다.

구성 요소가 창에 추가되지만 그럼에도 불구하고이 오류가 발생했습니다. 내 코드와 오류가 아래에 있습니다.

코드 :

// This all happens in a class which extends JFrame 

private JTabbedPane contentPane; 

/** 
* Launch the application. 
*/ 
public static void main(String[] args) { 
    SwingUtilities.invokeLater(new Runnable() { 
     public void run() { 
      try { 
       ConfigBuilderWindow frame = new ConfigBuilderWindow(); 
       frame.setVisible(true); 
      } catch (Exception e) { 
       e.printStackTrace(); 
      } 
     } 
    }); 
} 

/** 
* Create the frame. 
*/ 
public ConfigBuilderWindow() { 
    setTitle("Config Builder"); 
    setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); 
    setBounds(100, 100, 916, 617); 
    contentPane = new JTabbedPane(); 
    contentPane.setBorder(new LineBorder(Color.BLUE, 4)); 
    contentPane.setLayout(new BorderLayout(0, 0)); 

    contentPane.addTab("Test1", new JButton("Test1")); 
    contentPane.addTab("Test2", new JButton("Test2")); 

    setContentPane(contentPane); 
} 

오류 :

Exception in thread "AWT-EventQueue-0" java.lang.ArrayIndexOutOfBoundsException: 0 
at javax.swing.plaf.basic.BasicTabbedPaneUI.paintTabArea(Unknown Source) 
at javax.swing.plaf.basic.BasicTabbedPaneUI.paint(Unknown Source) 
at javax.swing.plaf.metal.MetalTabbedPaneUI.paint(Unknown Source) 
at javax.swing.plaf.metal.MetalTabbedPaneUI.update(Unknown Source) 
at javax.swing.JComponent.paintComponent(Unknown Source) 
at javax.swing.JComponent.paint(Unknown Source) 
at javax.swing.JComponent.paintChildren(Unknown Source) 
at javax.swing.JComponent.paint(Unknown Source) 
at javax.swing.JLayeredPane.paint(Unknown Source) 
at javax.swing.JComponent.paintChildren(Unknown Source) 
at javax.swing.JComponent.paintToOffscreen(Unknown Source) 
at javax.swing.RepaintManager$PaintManager.paintDoubleBuffered(Unknown Source) 
at javax.swing.RepaintManager$PaintManager.paint(Unknown Source) 
at javax.swing.RepaintManager.paint(Unknown Source) 
at javax.swing.JComponent.paint(Unknown Source) 
at java.awt.GraphicsCallback$PaintCallback.run(Unknown Source) 
at sun.awt.SunGraphicsCallback.runOneComponent(Unknown Source) 
at sun.awt.SunGraphicsCallback.runComponents(Unknown Source) 
at java.awt.Container.paint(Unknown Source) 
at java.awt.Window.paint(Unknown Source) 
at javax.swing.RepaintManager$4.run(Unknown Source) 
at javax.swing.RepaintManager$4.run(Unknown Source) 
at java.security.AccessController.doPrivileged(Native Method) 
at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown Source) 
at javax.swing.RepaintManager.paintDirtyRegions(Unknown Source) 
at javax.swing.RepaintManager.paintDirtyRegions(Unknown Source) 
at javax.swing.RepaintManager.prePaintDirtyRegions(Unknown Source) 
at javax.swing.RepaintManager.access$1200(Unknown Source) 
at javax.swing.RepaintManager$ProcessingRunnable.run(Unknown Source) 
at java.awt.event.InvocationEvent.dispatch(Unknown Source) 
at java.awt.EventQueue.dispatchEventImpl(Unknown Source) 
at java.awt.EventQueue.access$500(Unknown Source) 
at java.awt.EventQueue$3.run(Unknown Source) 
at java.awt.EventQueue$3.run(Unknown Source) 
at java.security.AccessController.doPrivileged(Native Method) 
at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown Source) 
at java.awt.EventQueue.dispatchEvent(Unknown Source) 
at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source) 
at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source) 
at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source) 
at java.awt.EventDispatchThread.pumpEvents(Unknown Source) 
at java.awt.EventDispatchThread.pumpEvents(Unknown Source) 
at java.awt.EventDispatchThread.run(Unknown Source) 

나는 사람이 무슨 일이 일어나고 있는지 알고 있기를 바랍니다. 당신이 BorderLayoutcontentPane로 설정하는 이유

Answer 1

잘 모르겠어요, 난 당신이 tabbedPane에 변수 이름을 변경하고이 줄을 제거하는 것이 좋습니다 :

tabbedPane.setLayout(new BorderLayout(0, 0)); 

이 오류를 해결합니다.

탭의 레이아웃을 편집하려면 해당 레이아웃을 사용하여 JPanel을 만들고 JButton 대신 매개 변수로 전달하십시오.

주목해야 할 또 다른 것은

는 제쳐두고 참고로, JFrame을 확장 The use of multiple JFrames, Good/Bad practice? 표시되지 않는 지금 setBounds하지만 pack() 및 setLocation() 또는 setLocationRelativeTo 또는 setLocationByPlatform() 방법 대신

를 호출하지 않습니다 (일반적인 합의는 나쁜 관행 말한다). 또한 참조하십시오 Extends JFrame vs creating it inside of class