addremovecells.java

JAVA表格的基本操作,有鼠标右键监听,很好的学习例子.能删除/增加行和列.

/*
 * AddRemoveCells.java
 *
 * Created on 2000年7月6日, 下午6:31
 *
 * To change this template, choose Tools | Template Manager
 * and open the template in the editor.
 */

package javaapplication6;

/**
 *
 * @author sony
 */
import java.awt.*;
import java.awt.event.*;
import java.util.Vector;
import javax.swing.*;
import javax.swing.event.*;
import javax.swing.table.*;

public class AddRemoveCells implements ActionListener
{
    JTable table = null;
    DefaultTableModel defaultModel = null;

      private JPopupMenu popupMenu;
    private JMenuItem del;
int row1,column1;
    public AddRemoveCells()
    {
       	JFrame f = new JFrame();
       	String[] name = {"字段 1","字段 2","字段 3","字段 4","字段 5"};
       	String[][] data = new String[5][5];
       	int value =1;
       	for(int i=0; i<data.length; i++)
       	{
       	    for(int j=0; j<data[i].length ; j++)
       	        data[i][j] = String.valueOf(value++);
        }
         	        
       	defaultModel = new DefaultTableModel(data,name);
       	table=new JTable(defaultModel);
       	table.setPreferredScrollableViewportSize(new Dimension(400, 80));
        JScrollPane s = new JScrollPane(table);
        
        JPanel panel = new JPanel();
        JButton b = new JButton("增加行");
        panel.add(b);
        b.addActionListener(this);
        b = new JButton("增加列");
        panel.add(b);
        b.addActionListener(this);
        b = new JButton("删除行");
        panel.add(b);
        b.addActionListener(this);
        b = new JButton("删除列");
        panel.add(b);
        b.addActionListener(this);
        
        Container contentPane = f.getContentPane();
        contentPane.add(panel, BorderLayout.NORTH);
        contentPane.add(s, BorderLayout.CENTER);
        
	    f.setTitle("AddRemoveCells");
        f.pack();
        f.setVisible(true);
        
        f.addWindowListener(new WindowAdapter() {
            public void windowClosing(WindowEvent e) {
                System.exit(0);
            }
        });
        	
        
        table.setToolTipText("点右键显示更多功能"); 
         popupMenu=new JPopupMenu(); 
del =new JMenuItem("删除");//鼠标右键弹出菜单
popupMenu.add(del);
del.addActionListener(this);
        table.addMouseListener(new MouseAdapter() 
{ 

public void mouseReleased(MouseEvent e) 
{ if(e.isPopupTrigger()) 
{ 

popupMenu.show(table,e.getX(),e.getY()); 
 Point   p   =   e.getPoint(); 
                           row1   =   table.rowAtPoint(p); 
                           column1   =   table.columnAtPoint(p); 
                       
System.out.println(row1);

 
  }
} 
}
);
        
    }
    
    public void actionPerformed(ActionEvent e)
    {
        
        if(e.getSource()==del) 
{   System.out.println(row1);
            int rowcount = defaultModel.getRowCount()-1;
        defaultModel.removeRow(row1);
                defaultModel.setRowCount(rowcount);
        
        }
        if(e.getActionCommand().equals("增加列"))
            defaultModel.addColumn("增加列");
        if(e.getActionCommand().equals("增加行"))
            defaultModel.addRow(new Vector());
        if(e.getActionCommand().equals("删除列"))
        {
            
            int columncount = defaultModel.getColumnCount()-1;
            if(columncount >= 0)
            {
                TableColumnModel columnModel = table.getColumnModel();
                TableColumn tableColumn = columnModel.getColumn(columncount);
                columnModel.removeColumn(tableColumn);
                defaultModel.setColumnCount(columncount);
            }
        }
        if(e.getActionCommand().equals("删除行"))
        {
            int rowcount = defaultModel.getRowCount()-1;
            if(rowcount >= 0)
            {
                defaultModel.removeRow(rowcount);
                defaultModel.setRowCount(rowcount);
            }
        }
        table.revalidate();
    }
    
    public static void main(String args[]) {
        new AddRemoveCells();
    }
}