用java面向对象的思想编写计算器能实现加减乘除如何实施写出思路文本的也要？

Question

如题所述

Answer 1

public class Calculator {
int num1; //运算数1
int num2; //运算数2
public int add(){
return (num1 + num2);
}

public int minus(){
return (num1 - num2);
}
public int multiple(){
return (num1 * num2);
}

public int divide(){
return (num1/num2);
}
}新建test.class public class testCalculator { public static void main(String[] args) {

Calculator cal1 = new Calculator();
cal1.num1 = 10;
cal1.num2 = 7;
System.out.println(cal1.add());

Calculator cal2 = new Calculator();
cal2.num1 = 10;
cal2.num2 = 7;
System.out.println(cal2.minus());

Calculator cal3 = new Calculator();
cal3.num1 = 10;
cal3.num2 = 7;
System.out.println(cal3.multiple());

Calculator cal4 = new Calculator();
cal3.num1 = 10;
cal3.num2 = 7;
System.out.println(cal4.divide());

}
}本回答被网友采纳

Answer 2

public class 计算器 {
double firstNo;
double secondNo;
double result;

void add(){
System.out.print(result = firstNo + secondNo );
}
void Minus(){
System.out.print(result = firstNo - secondNo );
}
void chen(){
System.out.print(result = firstNo * secondNo );
}
void chu(){
System.out.print(result = firstNo / secondNo );
}

}