button2.java

来自「java技术内幕源代码,配合书籍看有事半功倍的效果」· Java 代码 · 共 38 行

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

/*
<APPLET
    CODE=button2.class
    WIDTH=200
    HEIGHT=200 >
</APPLET>
*/

public class button2 extends Applet implements ActionListener {

    TextField text1;
    Button button1;

    public void init()
    {
        text1 = new TextField(20);
        add(text1);
        button1 = new Button("Click Here!");
        add(button1);
        button1.setActionCommand("buttonClicked");
        button1.addActionListener(this);
    }

    public void actionPerformed(ActionEvent event)
    {
        String msg = new String ("Hello from Java!");
        String command = event.getActionCommand();

        if(command.equals("buttonClicked")){
            text1.setText(msg);
        }
    }
}