/* package whatever; // don't place package name! */
 
import java.util.*;
import java.lang.*;
import java.io.*;
 
/* Name of the class has to be "Main" only if the class is public. */
class Demo040401_Car {
	String color;//차량 색상
	int door;//문 갯수
	Demo040401_Car(){
		this(null,0);//기본 생성자가 매개변수를 보유한 생성자 호출
	}
 
	public Demo040401_Car(String color, int door) {
		this.color=color;//매개변수를 인스턴스 전역변수에 넣어줍니다.
		this.door=door;
	}
 
	public void drive(){//시동 부르릉
		System.out.println("brrrrrr~~~");
	}
	public void stop(){//멈춤 삐삐!!
		System.out.println("장비를 정지합니다. 어? 안돼잖아??????");
	}
	public void overriding(){//부모 메소드를 오버라이딩합니다.
		System.out.println("Car Overriding");
	}
}
class Demo040401_FireEngine extends Demo040401_Car {
 
	public Demo040401_FireEngine() {
		this(null,0);//기본생성자가 매개변수를 보유한 생성자를 호출
 
	}
 
	public Demo040401_FireEngine(String color, int door) {
		super(color, door);//자식 객체는 부모객체에게 매개변수를 제공
 
	}
	public void water(){//불이났습니다 물뿌려주세요
		System.out.println("야 꺼 불꺼! 불이야 불! 도와주세요!");
	}
 
	public void overriding(){//부모의 메소드를 오버라이딩합니다.
		System.out.println("Fire Overriding");
	}
	public void Caroverriding(){
		super.overriding();//오버라이딩한 메소드의 부모 메소드를 호출합니다.
	}
 
}
 
class Demo040401_Main {
 
	public static void main(String[] args) {
 
		Demo040401_Car car = null;
		//부모타입변수 = null
		Demo040401_FireEngine f1= new Demo040401_FireEngine();
		//자식타입변수 = 자식객체
		Demo040401_FireEngine f2= null;
		//자식타입변수 = null
 
		f1.water();
		car= f1;
		//부모타입변수 = 자식타입객체
		//car.water(); 부모는 자식의 메소드가 없기때문에 사용할수없다
		f2=(Demo040401_FireEngine)car;
		//자식타입변수 = (자식타입형변환)부모타입객체
		f2.water();
 
		//오버라이딩의 다형성
		f1.overriding();//자식의 메소드를 호출
		car.overriding();//자식의 메소드를 호출
		f2.overriding();//자식의 메소드를 호출
		f1.Caroverriding();//super를 사용한 부모의 메소드를 강제 호출
 
 
	}
 
}

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