第1个回答 2013-05-29
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
第2个回答 2013-05-29
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 );
}
}