textfieldmethodprg.java

java练习程序

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

public class TextFieldMethodprg extends Applet implements ActionListener
{
  TextField text1,text2,text3,text4;
  public void init()
  {
  	text1=new TextField(10);
  	text2=new TextField(10);
  	text3=new TextField(10);
  	add(text1);
  	add(text2);
  	add(text3);
  	text1.addActionListener(this);
  	text2.addActionListener(this);
  	text3.setText("no word");// add myself
  	text4=new TextField(30);// add myself
  	add(text4);// add myself
  	text4.setEditable(false);// add myself
  	text4.setText("enter: boy girl sun");// add myself
  }
  public void actionPerformed(ActionEvent e)
  {
  	// remember to press enter key
  	if((e.getSource()==text1)&&(text1.getText().equals("boy")))
   	{
   		text3.setText("boy");
   	}else if((e.getSource()==text2)&&(text2.getText().equals("girl")))
   	{
   		text3.setText("girl");
   	}else if((e.getSource()==text1)&&(text1.getText().equals("sun")))
   	{
   		text3.setText("sun");
   	}else
   	{
   		text3.setText("no word");
   	}
  }
}