jisuan.java

做一个简易的“+ - x /”计算器：在Applet中加入2个提示标签

import java.awt.*;
import java.awt.event.*;
class jisuan extends Frame implements ActionListener
{
	TextField text;
	Button buttonEnter;
	jisuan()
	{
		Frame frm=new Frame();
		frm.setLayout(new FlowLayout());
		frm.setSize(100,100);
		text=new TextField(20);
		frm.setLayout(new FlowLayout());
		buttonEnter=new Button("计算8!");
		frm.add(buttonEnter);
		frm.add(text);
		buttonEnter.addActionListener(this);
		text.addActionListener(this);
		frm.setBounds(200,200,200,200);
        frm.setVisible(true);
        validate();
	}
	
	public void actionPerformed(ActionEvent e)
	{
	
		int n=8*7*6*5*4*3*2*1;
		text.setText("8的阶乘等于："+n);	
	}
	
	public static void main(String args[])
	{
		jisuan win=new jisuan();
	}
}