按要求编写Java应用程序。 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； 创建主类： 创建一个对象：名叫“张

Posted 2020-08-09

package java1;

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 shuohua(String hua) {
        System.out.println("说：" + hua);
        return hua;
    }

    public double jia(double a, double b) {
        System.out.println(a + "+" + b + "=" + (a + b));
        return a + b;
    }

    public String changename(String name) {
        this.name=name;
        System.out.println("修改后的名字为"+name);
        return name;
    }


        People ren=new People("张三",18,"男",1.80);
        System.out.println(ren.name+ren.height+ren.sex+ren.age);
        ren.shuohua("你好！");
        ren.jia(23,45);
        ren.changename("李四");