重载

package Class;

public class MyPlus {
    public int plus(int a, int b){
        int s;
        s = a + b;
        return s;
    }
    public  int plus(int a ,int b,int c){
        int s;
        s = plus(a,b) + c;
        return s;
    }
    public int plus(int a,int b, int c,int d){
        int s;
        s = plus(a, b, c) + d;
        return s;
    }

    public static void main(String[] args) {
    MyPlus p = new MyPlus();
        System.out.println("1+2="+p.plus(1,2));
        System.out.println("1+2+3="+p.plus(1,2,3));
        System.out.println("1+2+3+4="+p.plus(1,2,3,4));
    }
    }