学步园

import javax.swing.*;  
import java.awt.*; 

import java.awt.event.*;

import java.util.*;
 
public class Wenben extends Frame implements TextListener,ActionListener{
	TextArea text1 , text2;
	
	
	
	Wenben()
	{
		setLayout(new FlowLayout());
		
		text1 = new TextArea(25,30);
		
		text2 = new TextArea(25,30);
		
		add(text1);
		
		add(text2);
		
		text2.setEditable(false);
		
		text1.addTextListener(this);
		
		setBounds(300,300,350,360);
		
		setVisible(true);
		
		validate();
	}
	
	public void textValueChanged(TextEvent e)
	{
		
		String s = text1.getText();
		
		StringTokenizer fenxi = new StringTokenizer(s,",'\n'");
		int n = fenxi.countTokens();
		
		String a[] = new String[n];
		
		int t = 0;
		for(int i = 0 ; i <n; i ++)
		{
			String temp = fenxi.nextToken();
			
		a[i] = temp;
			
			t = t+Integer.parseInt(a[i]);
		}
		int ave = 0;
		
		ave = t/n;
		
		String show = "变化的数的和为"+t+"平均值为"+ave;
		
		text2.setText(show);	
	}
	
	public void actionPerformed(ActionEvent e)
	{
		
	}
	}
	

	class Test{
		
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		
		Wenben w = new Wenben();

	}

}