重载实例
//借鉴的^^class Matharea {//创建一个类public int area(int lang, int width) {//求四边形面积int rectangular = lang * width;return rectangular;//返回结果值}public float area(double top, double bottom, double high) {//求梯形面积float trapezoidal = (float) ((top + bottom) * high / 2);//进行强制类型转换，将double转换成floatreturn trapezoidal;//返回结果值}public String area(int r) {//求圆的面积float circular = (float) 3.14 * r * r;//进行强制类型转换，将double转换成floatreturn "这是圆的面积 " + circular;//返回结果值}}public class Overload {public static void main(String[] args) {Matharea ma = new Matharea();//创建Matharea的实例对象System.out.println(ma.area(5, 11.2, 5));//打印结果}}