[JAVA] abstract class, interface

abstract class Bird {
    private int x, y, z;
    
    void fly(int x, int y, int z) {
        printLocationBefore();
        System.out.println("이동합니당.");
        this.x = x;
        this.y = y;
        if (flyable(z)) {
            this.z = z;
        } else {
            System.out.println("그높이 안됨");
        }
        printLocation();
    }
    abstract boolean flyable(int z);

    public void printLocation() {
        System.out.println("현위치 : (" + x + "," + y + "," + z + ")");
        System.out.println("======이동완료========");
    }
    public void printLocationBefore() {
        System.out.println("이전위치 : (" + x + "," + y + "," + z + ")");
    }
}


class Pigeon extends Bird {

        @Override
        boolean flyable(int z) {
            return z < 10000;
        }
    }

class Peacock extends Bird {

        @Override
        boolean flyable(int z) {
            return false;
        }
    }




public class Main {
    public static void main(String[] args) {
        Bird pigeon = new Pigeon();
        Bird peacock = new Peacock();
        System.out.println("비둘기");
        pigeon.fly(4,5,2);
        System.out.println("공작새");
        peacock.fly(2,5,2);

        System.out.println("비둘기");
        pigeon.fly(1, 5, 12000);
    }
}

비둘기
이전위치 : (0,0,0) 이동합니당.
현위치 : (4,5,2)
======이동완료========
공작새
이전위치 : (0,0,0)
이동합니당.
그높이 안됨
현위치 : (2,5,0)
======이동완료========
비둘기
이전위치 : (4,5,2)
이동합니당.
그높이 안됨
현위치 : (1,5,2)
======이동완료========

 

 

interface Flyable {
    void fly(int x, int y, int z);
}

class Pigeon implements Flyable {
    private int x, y, z;

    @Override
    public void fly(int x, int y, int z) {
        printLocationBefore();
        System.out.println("날아오릅니다.");
        this.x = x;
        this.y = y;
        this.z = z;
        printLocation();

    }
    public void printLocationBefore() {
        System.out.println("이전위치 (" + x + "," + y + "," + z + ")");
    }
    public void printLocation() {
        System.out.println("현위치 (" + x + "," + y + "," + z + ")");
    }
}

public class Main {
    public static void main(String[] args) {
        Flyable pigeon = new Pigeon();
        pigeon.fly(1, 2, 4);

    }
}