创建一个人的类，生成一个人的对象并调用类方法

public class Human {
    String name;
    String sex;
    int age;

    public  Human(String name,String sex, int age) {
        this.name=name;
        this.sex=sex;
        this.age=age;
    }
    public Human(){}
    public String getName() {
        return name;
    }
    public String getSex() {
        return sex;
    }
    public int getAge() {
        return age;
    }
    public  void setName(String name) {
        this.name=name;
    }
    public void setSex(String sex) {
        this.sex=sex;
    }
    public void setAge(int age){
        this.age=age;
    }
    public void chi(){
        System.out.println("吃饭");
    }
    public void xue(){
        System.out.println("看书");
    }
}

public class Texts {
    Human u;

    public static void main(String[] args) {
        Human h1 = new Human("张三","女",21);
        System.out.println(h1.name+"+"+h1.sex+"+"+h1.age);
        h1.chi();
        h1.xue();
    }
}