java--编写一个JFrame，标题为“计算的窗口”，在该窗口中组件的布局是FlowLayout。窗口中添加两个文本区，当我们在一个文本区中输入若干个数时，另一个文本区同时对输入的数进行求和运算并求

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 

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

	}

}