高手帮我用JAVA写个简单计算器嘛 谢谢

来源：百度知道 编辑：UC知道 时间：2024/09/22 07:19:53
请帮我 设计一个计算器，有加减乘除，退格，清零，求倒数功能就行了.
提示：写出三个java文件（主类 ComputerPad.java, 数值按钮NumberButton.java 运算符号按钮OperationButton.java.）
界面无所谓了 小弟感激不尽

import java.awt.*;
import java.awt.event.*;
import java.math.BigDecimal;

class Calculator {

private Frame frame;

private Panel panel[] = new Panel[6];

private Button botton[] = new Button[25];

private TextField textField;

private final String string[] = { "1", "2", "3", "clear", "exit", "4", "5",
"6", "+", "-", "7", "8", "9", "*", "/", "0", ".", "sqr", "%",
"+/-", "sin", "cos", "tan", "PI", "=" };

private String str1, str2, optype;

private final Label label = new Label(
"Contact me--QQ:120355282 , mail:fsolsh@gmail.com");

private final String STR1 = "Please enter your data!";