importjava.util.Scanner;publicclassCalculatorApp{publicstaticvoidmain(String[]args){Scannerscanner=newScanner(System.in);System.out.println("请选择运算类型:1.加法 2.减法 3.乘法 4.除法");intchoice=scanner.nextInt();System.out.println("请输入第一个操作数:");intnum1=scanner.nextInt();System.o...
Java代码实现计算器加减乘除简易功能 packagetest;importjavax.swing.*;importjava.awt.*;importjava.awt.event.KeyAdapter;importjava.awt.event.KeyEvent;importjava.util.HashMap;importjava.util.Stack;/** * Created by zxx on 2020/10/15. */publicclassCalculatorextendsJFrame{privateStack<Double> operandSta...
import java.awt.*;import java.awt.event.*;import javax.swing.*;import java.util.Vector;public class calculator { String str1="0"; //运算数1 初值一定为0 为了程序的安全 String str2="0"; //运算数2 String fh="+"; //运算符 String jg="";//结果 //状态开关 重要 int k1=...
//实现接口的方法 public void mouseClicked(MouseEvent e) { } public void mousePressed(MouseEvent e) { } public void mouseReleased(MouseEvent e) { } public void mouseEntered(MouseEvent e) { } public void mouseExited(MouseEvent e) { } public void actionPerformed(ActionEvent e) { String str=...
⽤java代码写的简易计算器(可以实现基本的加减乘除功能)package A;import java.awt.*;import java.awt.event.ActionEvent;import java.awt.event.ActionListener;import java.awt.event.MouseEvent;import java.awt.event.MouseListener;import javax.swing.*;public class Calcular3 extends JFrame implements Action...
import java.util.Scanner; /* * 使用switch实现简易的计算器(实现加减乘除); */ public class test { public static void main(String[] args) { Scanner sc = new Scanner(System.in); System.out.println("输入一个表达式(例如: 5 + 3):"); ...