按要求编写Java应用程序。 (1)创建一个叫做People的类: 属性:姓名、年龄、性别、身高 行为:说话、计算加法、改名 编写能为所有属性赋值的构造方法; (2)创建主类: 创建一个对象:名叫“张三”,性别“男”,年龄18岁,身高1.80; 让该对象调用成员方法: 说出“你好!” 计算23+45的值 将名字改为“李四”
package com.homework.zw; public class People { public String name; public int age; public String sex; public String height; People(String name, int age, String sex, String height) { this.name=name; this.age=age; this.sex=sex; this.height=height; } public String speak(String hua) { return hua; } public int add(int a,int b) { return a+b; } public String changename(String name) { this.name=name; return name; } }
package com.homework.zw; public class Text_people { public static void main(String[] args) { People pe = new People("张三",18,"男","1.80米"); System.out.println("姓名:"+pe.name+" 年龄:"+pe.age+" 性别:"+pe.sex+" 身高:"+pe.height); System.out.println("张三说:"+pe.speak("你好")); System.out.println("23+45="+pe.add(23, 45)); System.out.println("姓名改为:"+pe.changename("李四")); } }