tableeventhandle.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.event.*;
import javax.swing.table.*;
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.util.*;

public class TableEventHandle implements TableModelListener
{
    JTable table = null;
    MyTable mt = null;
    JLabel label = null; //显示修改字段位置
    
    public TableEventHandle() {
    
       	JFrame f = new JFrame();
       	mt=new MyTable();
    	mt.addTableModelListener(this);
    
       	table=new JTable(mt);
       	
       	JComboBox c = new JComboBox();
       	c.addItem("Taipei");
       	c.addItem("ChiaYi");
       	c.addItem("HsinChu");
       	table.getColumnModel().getColumn(1).setCellEditor(new DefaultCellEditor(c));
       	   	
       	table.setPreferredScrollableViewportSize(new Dimension(550, 30));
        JScrollPane s = new JScrollPane(table);
        
        label = new JLabel("修改字段位置：");
        f.getContentPane().add(s, BorderLayout.CENTER);
        f.getContentPane().add(label, BorderLayout.SOUTH);
	    f.setTitle("TableEventHandle");
        f.pack();
        f.setVisible(true);
        
        f.addWindowListener(new WindowAdapter() {
            public void windowClosing(WindowEvent e) {
                System.exit(0);
            }
        });
    }

    public void tableChanged(TableModelEvent e)
    {
    	int row = e.getFirstRow();
        int column = e.getColumn();
        label.setText("修改字段位置："+(row+1)+" 行 "+(column+1)+" 列");
        boolean cheat =((Boolean)(mt.getValueAt(row,6))).booleanValue();
        int grade1=((Integer)(mt.getValueAt(row,2))).intValue();
        int grade2=((Integer)(mt.getValueAt(row,3))).intValue();
	    int total = grade1+grade2;
    	if(cheat)        
    	{
    		if(total > 120)	
    			mt.mySetValueAt(new Integer(119),row,4);
    		else
    			mt.mySetValueAt(new Integer(total),row,4);
    		mt.mySetValueAt(new Boolean(false),row,5);
    	}
    	else
    	{
    		if(total > 120)	
    			mt.mySetValueAt(new Boolean(true),row,5);
    		else
    			mt.mySetValueAt(new Boolean(false),row,5);
    			
    		mt.mySetValueAt(new Integer(total),row,4);
    	}
    	table.repaint();
    }
	
    public static void main(String args[]) {
    
        new TableEventHandle();
    }
}

class MyTable extends AbstractTableModel {

    Object[][] p = {
    {"阿呆", "Taipei",new Integer(66), new Integer(32), new Integer(98),
      new Boolean(false),new Boolean(false)},
    {"阿瓜", "ChiaYi",new Integer(85), new Integer(69), new Integer(154),
      new Boolean(true),new Boolean(false)}};

    String[] n = {"姓名","居住地","语文","数学","总分","及格","作弊"};

    public int getColumnCount() {
        return n.length;
    }

    public int getRowCount() {
        return p.length;
    }

    public String getColumnName(int col) {
        return n[col];
    }

    public Object getValueAt(int row, int col) {
        return p[row][col];
    }
    
	public Class getColumnClass(int c) {
        	return getValueAt(0, c).getClass();
    }
	
	public boolean isCellEditable(int rowIndex, int columnIndex) {
		return true;	
    }
    
	public void setValueAt(Object value, int row, int col) {
        	p[row][col] = value;
        	fireTableCellUpdated(row, col);
    }
    
    public void mySetValueAt(Object value, int row, int col) {
    	p[row][col] = value;
    }
}