Java基础之抽象类abstract

修饰符 abstract 类名{

//类体

修饰符 abstract 返回值类型 方法名(参数列表)

}

public class Animal {

}

public abstract class Feline {

    private int legCount=4;//定义腿的数量
    private String headShape="round";//定义脑袋的形状
    private boolean meatEater=true;//定义是否为食肉动物        
    
    public int getLegCount() {
        return legCount;
    }
    public void setLegCount(int legCount) {
        this.legCount = legCount;
    }
    public String getHeadShape() {
        return headShape;
    }
    public void setHeadShape(String headShape) {
        this.headShape = headShape;
    }
    public boolean isMeatEater() {
        return meatEater;
    }
    public void setMeatEater(boolean meatEater) {
        this.meatEater = meatEater;
    }
    
    //叫
    public void cry() {
        System.out.println("动物在狂叫");
    }
    //捕食
    public abstract void catchAnimal(Animal animal);
}

public class Mouse extends Animal{

}

public class Cat extends Feline{

    @Override
    public void catchAnimal(Animal animal) {
        // TODO Auto-generated method stub
        if(animal instanceof Mouse) {
            System.out.println("");
        }else {
            System.out.println("猫不能捕食他");
        }
    }

}

public class Tiger extends Feline{

    @Override
    public void catchAnimal(Animal animal) {
        // TODO Auto-generated method stub
        System.out.println("老虎在捕食");
    }

}