pjc.java

一个JAVA下applet到 application的转换

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

public class pjc extends Applet implements TextListener
{TextArea text1;
TextField text2,text3;
Label Label1;

public void init()
{
 text1=new TextArea("",10,10,TextArea.SCROLLBARS_BOTH);
 text3=new TextField(20);
 text2=new TextField(20);
 this.add(text1);
 this.add(text2);
 this.add(text3);

 text1.addTextListener(this);}

 double sum1,sum2;

public void textValueChanged(TextEvent e)
 {if(e.getSource()==text1)
 {String s=text1.getText();
  double a[]=new double[50];
  StringTokenizer fenxi=new StringTokenizer( s , ",'\n'");
  int n=fenxi.countTokens();
   sum1=0;
 for(int i=0;i<=n-1;i++)
 { String temp=fenxi.nextToken();
   a[i]=Double.valueOf(temp).doubleValue();
   sum1=sum1+a[i];  }
   sum2=sum1/n;
   text2.setText(String.valueOf(sum1));
   text3.setText(String.valueOf(sum2)); 
   }
else
{text2.setText("没有响应！");}
 }
public static void main(String args[])
{Frame mywindow=new Frame();
pjc pj=new pjc();
pj.init();
mywindow.add("Center",pj);
mywindow.setVisible(true);
mywindow.setSize(850,500);
mywindow.addWindowListener(new WindowAdapter()
{public void windowClosing(WindowEvent e)
{System.exit(0);}});
}
}