java的继承和抽象类的用法

package cn.itcast.extendsTest;

public class Main
{
    public static void main(String[] args)
    {
         //错误
        People p = new Man();
        p.eat();
        p.drink();
         //此方法错误
        Man man = new Man();
        man.eat();
        man.playGames();
        Women women = new Women();
        women.eat();
        women.dressing();
    }
    abstract static class People{
        String name;
        int age;
        float height;
        float weight;
        public void eat(){
            System.out.println("人都会吃饭");
        }
        public abstract void drink();
    }
    static class Man extends People{
        float short_hair;
        public void playGames(){
            System.out.println("男的独有的打游戏技能");
        }
        @Override
        public void drink(){
            System.out.println("man drink 酒");
        }
    }
    static class Women extends People{
        float long_hair;
        public void dressing(){
            System.out.println("女的独有的化妆技能");
        }
        @Override
        public void drink(){
            System.out.println("women drink 饮料");
        }
    }
}

package cn.itcast.extendsTest;

public class Zi extends Fu {
public int age = 13;

    public Zi(int age) {
        this.age = age;
    }


    public Zi() {
        this(12);
    }

    @Override
    public void work() {
        //super.work();
        System.out.println("爸爸工作");

    }

    public static void main(String[] args) {
        Zi zi = new Zi();
        zi.plant();

        zi.setName("儿子");
        System.out.println(zi.getName());

        zi.work();
        zi.show();
    }
    public void show(){
        System.out.println(age);
        System.out.println(super.age);

    }
}

package cn.itcast.extendsTest;

public abstract class Fu extends Ye {
    private String name;
    public int age = 70;

    public Fu() {
        System.out.println("父类构造方法");
    }

    public void work() {
        System.out.println("fu work");
    }

    private void smoke() {
        System.out.println(" fu smoke");
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }
}

package cn.itcast.extendsTest;

public class Ye {
    public String hit;
    public void plant(){
        System.out.println("爷爷种地");
    }
}