Test113 다형성_instanceof 연산자

package day09;

import java.util.Scanner;

class AA {
	int x;
}

class BB extends AA {
	int y;
}
public class Test113 {
	public static void main(String[] args) {

		AA a = new AA();
		AA a1 = new BB();
		
		Object o = new AA();
		
		if( o instanceof AA) {
			AA abc = (AA)o;
		}
	
		Object o2 = new BB(); 
		Object o3 = new Scanner(System.in);
		
		
	}

}