ch7_e7_15.java

来自「代码包括《Java语言与面向对象程序设计题解与实验指导》一书中 “习题解答”部」· Java 代码 · 共 31 行

import java.applet.Applet; 
import java.awt.*;
import java.awt.event.*;

public class ch7_e7_15 extends Applet implements ActionListener
{
    Label outputLbl = new Label("                          ");
    TextField inputTfd = new TextField(10);
    Button copyBtn = new Button("复制");
    
    public void init()
    {
        inputTfd.setText(" ");
        outputLbl.setText("              ");
        add(inputTfd);
        add(copyBtn);
        add(outputLbl);
        
        copyBtn.addActionListener(this);
    }
    
    public void actionPerformed(ActionEvent ae)
    {
        if(ae.getSource() == copyBtn)
        {
            outputLbl.setText(inputTfd.getText());
        }
    }
    
}