java使用Scannr和有参的方法实现乘法

[吃霸天下]

import java.util.Scanner;
public class demo {
int numA;
int numB;
Scanner s = new Scanner(System.in);

public int getArea() {
System.out.println("请输入第一个整数：");
numA= s.nextInt();
System.out.println("请输入第二个整数：");
numB= s.nextInt();
int num = numA*numB;
System.out.println("积为："+num);
return num;
}
}

public class Test {

public static void main(String[] args) {
demo d = new demo();
d.getArea();

}
}

[十八道胡同]

package com.demo;
import java.util.Scanner;


public class Test {

    public static void main(String[] args) {
        demo d = new demo();
        d.getArea();

    }
    public static class demo {
        int numA;
        int numB;
        Scanner s = new Scanner(System.in);
        public int getArea() {

            System.out.println("请输入第一个整数：");
            numA= s.nextInt();
            System.out.println("请输入第二个整数：");
            numB= s.nextInt();
            int num = numA*numB;
            System.out.println("积为："+num);
            return num;
        }
    }

}

[十八道胡同]

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