Java第二天 方法的重载

//方法的重载
//多个方法的名称一样,但是参数列表不一样

public class Demo2 {
    public static void main(String[] args) {
        int a =10;
        int b =20;
        double c =30;
        System.out.println(sum(b,c));
    }

    public static int sum(int a,int b){
        return a+b;
    }

    public static double sum(int a,double b){
        return a+b;
    }

    public static double sum(double a,int b){
        return a+b;
    }

    public static double sum(double a,double b){
        return a+b;
    }
}