java计算器加减乘除 java实现计算器

import javax.swing.*; import java.awt.*; import java.awt.event.*; public class Calculator extends JFrame implements ActionListener { private boolean dotExist, operated, .

import java.awt.*; import java.awt.event.*; import javax.swing.*; public class Calc extends JFrame implements ActionListener { private double firstNum = 0; private double .

简单的啊,我有个自己编的完美的,不过给你改成简单的吧.有注释. import java.awt.*; import javax.swing.*; import javax.swing.border.*; import java.awt.event.*; import .

kankan我的 import java.awt.BorderLayout; import java.awt.GridLayout; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.math.BigDecimal; .

case 1://switch选择为1时候 { x=x+Double.parseDouble(s);//把s转化为double类型 String s=String.valueOf(x);//把x转化为String类型 w.setText(s);//把w显示的文字为s .

网上找的,如果你是要求的这样的,自己写也要好一会:import java.awt.*; import java.awt.event.*; public class Calculator { private Frame f; private TextField tf = new .

全部复制后 运行.完成了简单的功能. package calc.qq; import java.awt.BorderLayout; import java.awt.Color; import java.awt.GridLayout; import java.awt.event.ActionEvent; .

package calculator;/** * 计算器后台模型类 * */ public class CalculatorModel { /** * result结果 */ public static double result;/** 构造方法 */ public CalculatorModel(){ } /** get、.

import java.awt.*; //引入AWT包 import java.awt.event.*; //引入awt.event包 import javax.swing.*; //引入javax.swing包 public class JSQ extends JFrame implements .

import java.awt.BorderLayout; import java.awt.Button; import java.awt.Frame; import java.awt.GridLayout; import java.awt.Panel; import java.awt.TextField; import java.awt..