JTable 组件
每当添加表格是就报数组下标越界，请问是什么问题？？？import javax.swing.*;
import java.awt.*;
public class Demo extends JFrame{
public Demo() {
setVisible(true);
setBounds(500, 200, 200, 300);
setDefaultCloseOperation(EXIT_ON_CLOSE);
Container c = getContentPane();
String[] clumnname = {"A","B","C"};
String[][] into = {{"A1","A2"},{"B1","B2"},{"C1","C2"}};
JTable table = new JTable(into, clumnname);
JScrollPane jp = new JScrollPane(table);
c.add(jp);
}
public static void main(String[] args) {
new Demo();
}
}
错误信息
Exception in thread "AWT-EventQueue-0" java.lang.ArrayIndexOutOfBoundsException: 2
at java.desktop/javax.swing.JTable$1.getValueAt(Unknown Source)
at java.desktop/javax.swing.JTable.getValueAt(Unknown Source)
at java.desktop/javax.swing.JTable.prepareRenderer(Unknown Source)
at java.desktop/javax.swing.plaf.basic.BasicTableUI.paintCell(Unknown Source)
at java.desktop/javax.swing.plaf.basic.BasicTableUI.paintCells(Unknown Source)
at java.desktop/javax.swing.plaf.basic.BasicTableUI.paint(Unknown Source)
at java.desktop/javax.swing.plaf.ComponentUI.update(Unknown Source)
at java.desktop/javax.swing.JComponent.paintComponent(Unknown Source)
at java.desktop/javax.swing.JComponent.paint(Unknown Source)
at java.desktop/javax.swing.JComponent.paintChildren(Unknown Source)
at java.desktop/javax.swing.JComponent.paint(Unknown Source)
at java.desktop/javax.swing.JViewport.paint(Unknown Source)
at java.desktop/javax.swing.JComponent.paintChildren(Unknown Source)
at java.desktop/javax.swing.JComponent.paint(Unknown Source)
at java.desktop/javax.swing.JComponent.paintChildren(Unknown Source)
at java.desktop/javax.swing.JComponent.paint(Unknown Source)
at java.desktop/javax.swing.JComponent.paintChildren(Unknown Source)
at java.desktop/javax.swing.JComponent.paint(Unknown Source)
at java.desktop/javax.swing.JLayeredPane.paint(Unknown Source)
at java.desktop/javax.swing.JComponent.paintChildren(Unknown Source)
at java.desktop/javax.swing.JComponent.paintToOffscreen(Unknown Source)
at java.desktop/javax.swing.RepaintManager$PaintManager.paintDoubleBufferedImpl(Unknown Source)
at java.desktop/javax.swing.RepaintManager$PaintManager.paintDoubleBuffered(Unknown Source)
at java.desktop/javax.swing.RepaintManager$PaintManager.paint(Unknown Source)
at java.desktop/javax.swing.RepaintManager.paint(Unknown Source)
at java.desktop/javax.swing.JComponent.paint(Unknown Source)
at java.desktop/java.awt.GraphicsCallback$PaintCallback.run(Unknown Source)
at java.desktop/sun.awt.SunGraphicsCallback.runOneComponent(Unknown Source)
at java.desktop/sun.awt.SunGraphicsCallback.runComponents(Unknown Source)
at java.desktop/java.awt.Container.paint(Unknown Source)
at java.desktop/java.awt.Window.paint(Unknown Source)
at java.desktop/javax.swing.RepaintManager$4.run(Unknown Source)
at java.desktop/javax.swing.RepaintManager$4.run(Unknown Source)
at java.base/java.security.AccessController.doPrivileged(Native Method)
at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown Source)
at java.desktop/javax.swing.RepaintManager.paintDirtyRegions(Unknown Source)
at java.desktop/javax.swing.RepaintManager.paintDirtyRegions(Unknown Source)
at java.desktop/javax.swing.RepaintManager.prePaintDirtyRegions(Unknown Source)
at java.desktop/javax.swing.RepaintManager.access$1200(Unknown Source)
at java.desktop/javax.swing.RepaintManager$ProcessingRunnable.run(Unknown Source)
at java.desktop/java.awt.event.InvocationEvent.dispatch(Unknown Source)
at java.desktop/java.awt.EventQueue.dispatchEventImpl(Unknown Source)
at java.desktop/java.awt.EventQueue.access$600(Unknown Source)
at java.desktop/java.awt.EventQueue$4.run(Unknown Source)
at java.desktop/java.awt.EventQueue$4.run(Unknown Source)
at java.base/java.security.AccessController.doPrivileged(Native Method)
at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown Source)
at java.desktop/java.awt.EventQueue.dispatchEvent(Unknown Source)
at java.desktop/java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
at java.desktop/java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
at java.desktop/java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
at java.desktop/java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.desktop/java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.desktop/java.awt.EventDispatchThread.run(Unknown Source) 本帖最后由 夏雨莲 于 2021-4-5 21:23 编辑
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。
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