tablemodel2.java

《精通Java Swing程序设计S》这本书所附带的JAVA程序写得很漂亮,都是SWING的实例子,很适合初学者。

import javax.swing.table.AbstractTableModel;
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;

public class TableModel2 implements ActionListener{
     
    JTable t = null;
    
    public TableModel2() {
    
       	JFrame f = new JFrame("DataModel");
       	JButton b1 = new JButton("数学老师");
       	b1.addActionListener(this);
       	JButton b2 = new JButton("学生阿呆");
       	b2.addActionListener(this);
       	JPanel panel = new JPanel();
       	panel.add(b1);
       	panel.add(b2);
       	
       	t=new JTable(new MyTable(1));
       	t.setPreferredScrollableViewportSize(new Dimension(550, 30));
        JScrollPane s = new JScrollPane(t);
        
        f.getContentPane().add(panel, BorderLayout.NORTH);
        f.getContentPane().add(s, BorderLayout.CENTER);
        f.pack();
        f.setVisible(true);
        
        f.addWindowListener(new WindowAdapter() {
            public void windowClosing(WindowEvent e) {
                System.exit(0);
            }
        });
    }
    
    public void actionPerformed(ActionEvent e)
    {
        if (e.getActionCommand().equals("学生阿呆"))
            t.setModel(new MyTable(1));
        if (e.getActionCommand().equals("数学老师"))
            t.setModel(new MyTable(2));
        t.revalidate();
    }
        
    public static void main(String args[]) {
    
        new TableModel2();
    }
}

class MyTable extends AbstractTableModel{

    Object[][] p1 = {
        {"阿呆", "1234",new Integer(66), 
          new Integer(50), new Integer(116), new Boolean(false),new Boolean(false)}};

    String[] n1 = {"姓名","学号","语文","数学","总分","及格","作弊"};
    
    Object[][] p2 = {
        {"阿呆", "1234",new Integer(50), new Boolean(false),new Boolean(false),"01234"},
        {"阿瓜", "1235",new Integer(75), new Boolean(true),new Boolean(false),"05678"}};

    String[] n2 = {"姓名","学号","数学","及格","作弊","电话"};
    
    int model = 1;
    
    public MyTable(int i){
        model = i;
    }
        
    public int getColumnCount() {
        if(model ==1)
            return n1.length;
        else
            return n2.length;
    }

    public int getRowCount() {
        if(model ==1)
            return p1.length;
        else
            return p2.length;
    }

    public String getColumnName(int col) {
        if(model ==1)
            return n1[col];
        else
            return n2[col];
    }

    public Object getValueAt(int row, int col) {
        if(model == 1)
            return p1[row][col];
        else
            return p2[row][col];
    }
    
	public Class getColumnClass(int c) {
	    return getValueAt(0, c).getClass();
	}
}