package cn.hp.demo04; public class Test { /*方法重载*/ //不用创建对象,通过方法名直接使用 public static void sum(int a,int b){ System.out.println(a+"+"+b+"="+(a+b)); } public static void sum(double a,double b){ System.out.println(a+"+"+b+"="+(a+b)); } public static void main(String[] args) { Test.sum(1, 2); Test.sum(1.1, 2.2); } }