java实现简易计算器功能
代码如下：
package method;
import java.util.Scanner;
public class Calculator {
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
String Next = "yes";
while (Next.equals("yes")){
System.out.println("请输入第一个数：");
double num1 =scanner.nextDouble();
System.out.println("请输入运算符：");
String var =scanner.next();
System.out.println("请输入第二个数：");
double num2 =scanner.nextDouble();
if (scanner.hasNextLine()){
switch (var){
case "+":
System.out.println(num1 + "+" + num2 + "=" + add(num1,num2));
break;
case "-":
System.out.println(num1 + "-" + num2 + "=" + minus(num1,num2));
break;
case "*":
System.out.println(num1 + "*" + num2 + "=" + mul(num1,num2));
break;
case "/":
if (num2 != 0){
System.out.println(num1 + "/" + num2 + "=" + divide(num1,num2));
}else {
System.out.println("除数不能为0");
}
break;
}
}
System.out.println("输入yes继续运算：");
Next = scanner.next();
}
scanner.close();
}
public static double add(double i,double j){
return (i + j);
}
public static double minus(double i,double j){
return (i - j);
}
public static double mul(double i,double j){
return (i * j);
}
public static double divide(double i,double j){
return (i / j);
}
}
