求一个200行以上的Java小程序代码

来源：百度知道 编辑：UC知道 时间：2024/05/12 06:56:51
直接用cmd命令运行的就好。。。。急需。。。。。最好今晚就给。。。。。好的加分

有个匿名网友的代码，很好，很强大

import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JTextField;

class Calculator extends JFrame implements ActionListener {

private final String[] KEYS = { "7", "8", "9", "/", "sqrt", "4", "5", "6",
"*", "%", "1", "2", "3", "-", "1/x", "0", "+/-", ".", "+", "=" };
private final String[] COMMAND = { "Backspace", "CE", "C" };
private final String[] M = { " ", "MC", "MR", "MS", "M+" };
priv