e5_4.java

来自「java 初学者学习实例」· Java 代码 · 共 27 行

import java.applet.*;
import java.awt.*;
import java.awt.event.*;
public class E5_4 extends Applet 
{
    static TextField text1,text2;
    Teacher teacher;
    public void init()
	{  
	   text1 = new TextField(10);
	   text2 = new TextField(10);
	   add(text1);add(text2);
	   teacher = new Teacher(); 
	   text1.addActionListener(teacher);
	}
}
class Teacher implements ActionListener
{
	  public void actionPerformed(ActionEvent e)
	  {
	    if((e.getSource()==E5_4.text1)&&(E5_4.text1.getText().equals("boy")))
		{E5_4.text2.setText("男孩");}
		else {E5_4.text2.setText("没有这个单词");}
	  }
}