Java开发网 - 文本框的监视器问题，谢谢

Topic: 文本框的监视器问题，谢谢

1.文本框的监视器问题，谢谢

Posted by: benkhe
Posted on: 2005-12-27 16:46


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

public class a1 extends Applet implements ActionListener
{
  TextField text1,text2,text3;
  public void init()
  {
   text1=new TextField(10);
   text1=new TextField(10);
   text1=new TextField(10);
   add(text1);add(text2);add(text3);
   text1.addActionListener(this);//主类的实例作为text1的监视器
  }
  public void actionPerformed(ActionEvent e)
  {
   if((e.getSource()==text1)&&(text1.getText().equals("boy")))
   {text3.setText("男孩");}

   else if((e.getSource()==text1)&&(text1.getText().equals("girl")))
   {text3.setText("女孩");}
   
   else if((e.getSource()==text1)&&(text1.getText().equals("sun")))
   {text3.setText("太阳");}
  }

}

调试正确，却出现如图所示的结果，请问这是为什么？

　
不好意思，不会上图
只好放在附件里
Please don't use BMP, which is huge and only viewable with IE.
I have converted the 729KB BMP to a ３KB GIF with the simple PAINT program.
Embedded JPG, GIF and PNG image would be displayed at the bottom of a post:

2.Re:文本框的监视器问题，谢谢 [Re: benkhe]

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Posted by: 土妞
Posted on: 2005-12-27 18:42

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

public class a1 extends Applet implements ActionListener
{
TextField text1,text2,text3;
public void init()
{
text1=new TextField(10);
text1=new TextField(10);
text1=new TextField(10);
add(text1);add(text2);add(text3);
text1.addActionListener(this);//主类的实例作为text1的监视器
}
public void actionPerformed(ActionEvent e)
{
if((e.getSource()==text1)&&(text1.getText().equals("boy")))
{text3.setText("男孩");}
if((e.getSource()==text2)&&(text2.getText().equals("girl")))//应该这样写
{text3.setText("女孩");}
if((e.getSource()==text3)&&(text3.getText().equals("sun")))
{text3.setText("太阳");}

}

}

3.Re:文本框的监视器问题，谢谢 [Re: benkhe]	Copy to clipboard
Posted by: benkhe Posted on: 2005-12-27 20:31 楼上的耍我呢？不过我刚已经知道了

4.Re:文本框的监视器问题，谢谢 [Re: benkhe]	Copy to clipboard
Posted by: why Posted on: 2005-12-27 21:54 text1 = new TextField(10); text2 = new TextField(10); text3 = new TextField(10); Please don't use BMP, which is huge and only viewable with IE. I have converted the 729KB BMP to a ３KB GIF with the simple PAINT program.

5.Re:文本框的监视器问题，谢谢 [Re: benkhe]	Copy to clipboard
Posted by: benkhe Posted on: 2005-12-27 22:22 错误我知道了，版主说的话我记住了