方法重载
是在main函数中 输入不同类型的数 或内容 会同一方法名称 匹配不同运行且与之搭配的方法
// MethodOverload.java // Using overloaded methods public class MethodOverload { public static void main(String[] args) { System.out.println("The square of integer 7 is " + square(7)); System.out.println("\nThe square of double 7.5 is " + square(7.5)); } public static int square(int x) { return x * x; } public static double square(double y) { return y * y; } }