[已解决]JTable 组件

不会起名字的我

每当添加表格是就报数组下标越界，请问是什么问题？？？

1. import javax.swing.*;
   
2. import java.awt.*;
   
3. 
   
4. public class Demo extends JFrame{
   
5.         public Demo() {
   
6.                 setVisible(true);
   
7.                 setBounds(500, 200, 200, 300);
   
8.                 setDefaultCloseOperation(EXIT_ON_CLOSE);
   
9.                 Container c = getContentPane();
   
10.                
    
11.                 String[] clumnname = {"A","B","C"};
    
12.                 String[][] into = {{"A1","A2"},{"B1","B2"},{"C1","C2"}};
    
13.                
    
14.                 JTable table = new JTable(into, clumnname);
    
15.                 JScrollPane jp = new JScrollPane(table);
    
16.                 c.add(jp);
    
17.         }
    
18.         public static void main(String[] args) {
    
19.                 new Demo();
    
20.         }
    
21. }

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错误信息

1. Exception in thread "AWT-EventQueue-0" java.lang.ArrayIndexOutOfBoundsException: 2
   
2.         at java.desktop/javax.swing.JTable$1.getValueAt(Unknown Source)
   
3.         at java.desktop/javax.swing.JTable.getValueAt(Unknown Source)
   
4.         at java.desktop/javax.swing.JTable.prepareRenderer(Unknown Source)
   
5.         at java.desktop/javax.swing.plaf.basic.BasicTableUI.paintCell(Unknown Source)
   
6.         at java.desktop/javax.swing.plaf.basic.BasicTableUI.paintCells(Unknown Source)
   
7.         at java.desktop/javax.swing.plaf.basic.BasicTableUI.paint(Unknown Source)
   
8.         at java.desktop/javax.swing.plaf.ComponentUI.update(Unknown Source)
   
9.         at java.desktop/javax.swing.JComponent.paintComponent(Unknown Source)
   
10.         at java.desktop/javax.swing.JComponent.paint(Unknown Source)
    
11.         at java.desktop/javax.swing.JComponent.paintChildren(Unknown Source)
    
12.         at java.desktop/javax.swing.JComponent.paint(Unknown Source)
    
13.         at java.desktop/javax.swing.JViewport.paint(Unknown Source)
    
14.         at java.desktop/javax.swing.JComponent.paintChildren(Unknown Source)
    
15.         at java.desktop/javax.swing.JComponent.paint(Unknown Source)
    
16.         at java.desktop/javax.swing.JComponent.paintChildren(Unknown Source)
    
17.         at java.desktop/javax.swing.JComponent.paint(Unknown Source)
    
18.         at java.desktop/javax.swing.JComponent.paintChildren(Unknown Source)
    
19.         at java.desktop/javax.swing.JComponent.paint(Unknown Source)
    
20.         at java.desktop/javax.swing.JLayeredPane.paint(Unknown Source)
    
21.         at java.desktop/javax.swing.JComponent.paintChildren(Unknown Source)
    
22.         at java.desktop/javax.swing.JComponent.paintToOffscreen(Unknown Source)
    
23.         at java.desktop/javax.swing.RepaintManager$PaintManager.paintDoubleBufferedImpl(Unknown Source)
    
24.         at java.desktop/javax.swing.RepaintManager$PaintManager.paintDoubleBuffered(Unknown Source)
    
25.         at java.desktop/javax.swing.RepaintManager$PaintManager.paint(Unknown Source)
    
26.         at java.desktop/javax.swing.RepaintManager.paint(Unknown Source)
    
27.         at java.desktop/javax.swing.JComponent.paint(Unknown Source)
    
28.         at java.desktop/java.awt.GraphicsCallback$PaintCallback.run(Unknown Source)
    
29.         at java.desktop/sun.awt.SunGraphicsCallback.runOneComponent(Unknown Source)
    
30.         at java.desktop/sun.awt.SunGraphicsCallback.runComponents(Unknown Source)
    
31.         at java.desktop/java.awt.Container.paint(Unknown Source)
    
32.         at java.desktop/java.awt.Window.paint(Unknown Source)
    
33.         at java.desktop/javax.swing.RepaintManager$4.run(Unknown Source)
    
34.         at java.desktop/javax.swing.RepaintManager$4.run(Unknown Source)
    
35.         at java.base/java.security.AccessController.doPrivileged(Native Method)
    
36.         at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown Source)
    
37.         at java.desktop/javax.swing.RepaintManager.paintDirtyRegions(Unknown Source)
    
38.         at java.desktop/javax.swing.RepaintManager.paintDirtyRegions(Unknown Source)
    
39.         at java.desktop/javax.swing.RepaintManager.prePaintDirtyRegions(Unknown Source)
    
40.         at java.desktop/javax.swing.RepaintManager.access$1200(Unknown Source)
    
41.         at java.desktop/javax.swing.RepaintManager$ProcessingRunnable.run(Unknown Source)
    
42.         at java.desktop/java.awt.event.InvocationEvent.dispatch(Unknown Source)
    
43.         at java.desktop/java.awt.EventQueue.dispatchEventImpl(Unknown Source)
    
44.         at java.desktop/java.awt.EventQueue.access$600(Unknown Source)
    
45.         at java.desktop/java.awt.EventQueue$4.run(Unknown Source)
    
46.         at java.desktop/java.awt.EventQueue$4.run(Unknown Source)
    
47.         at java.base/java.security.AccessController.doPrivileged(Native Method)
    
48.         at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown Source)
    
49.         at java.desktop/java.awt.EventQueue.dispatchEvent(Unknown Source)
    
50.         at java.desktop/java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
    
51.         at java.desktop/java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
    
52.         at java.desktop/java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
    
53.         at java.desktop/java.awt.EventDispatchThread.pumpEvents(Unknown Source)
    
54.         at java.desktop/java.awt.EventDispatchThread.pumpEvents(Unknown Source)
    
55.         at java.desktop/java.awt.EventDispatchThread.run(Unknown Source)

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最佳答案

月排行榜 / 总排行榜

夏雨莲

2021-4-5 21:20:05

你的表头的列数和表中的数据的列数不同，你的表头是三列，表中的数据是2列，你把它们改成相同的列数就行了。

跳转到最佳答案楼层

夏雨莲

你的表头的列数和表中的数据的列数不同，你的表头是三列，表中的数据是2列，你把它们改成相同的列数就行了。