java-제11장-류의 무참방법-메뉴의 등급연결 효과 실현

package     ;

import java.util.Scanner;

public class A03class {
	Scanner in = new Scanner(System.in);

	public void A() {
		System.out.println("             ");
		System.out.println("******************************");
		System.out.println("\t
1.           ");
		System.out.println("\t
2.       ");
		System.out.println("******************************");
		System.out.println("   ,      0       :");
		int choice = in.nextInt();
		switch (choice) {
		case 1:
			B();
			break;
		case 2:
			C();
			break;
		case 0:
			D();
			break;
		default:
			System.out.println("    !      ");
			break;
		}
	}

	public void B() {
		System.out.println("                ");
		System.out.println("******************************");
		System.out.println("\t
1.           ");
		System.out.println("\t
2.           ");
		System.out.println("\t
3.           ");
		System.out.println("\t
4.           ");
		System.out.println("******************************");
		System.out.println("   ,      0       :");
		int choice = in.nextInt();
		switch (choice) {
		case 1:
			System.out.println("              ");
			break;
		case 2:
			System.out.println("              ");
			break;
		case 3:
			System.out.println("              ");
			break;
		case 4:
			System.out.println("               ");
			break;
		case 0:
			A();
			break;
		default:
			System.out.println("    !      ");
			break;
		}
	}

	public void C() {
		System.out.println("              ");
		System.out.println("******************************");
		System.out.println("\t
1.        ");
		System.out.println("\t
2.        ");
		System.out.println("\t
3.         ");
		System.out.println("******************************");
		System.out.println("   ,      0       :");
		int choice = in.nextInt();
		switch (choice) {
		case 1:
			System.out.println("            ");
			break;
		case 2:
			System.out.println("           ");
			break;
		case 3:
			System.out.println("            ");
			break;
		case 0:
			B();
			break;
		default:
			System.out.println("    !      ");
			break;
		}
	}

	public void D() {
		System.out.println("          ");
		System.out.println("******************************");
		System.out.println("\t
1.        ");
		System.out.println("\t
2.                ");
		System.out.println("******************************");
		System.out.println("   ,    :");
		int choice = in.nextInt();
		switch (choice) {
		case 1:
			A();
			break;
		case 2:
			System.out.println("    !");
			break;
		default:
			System.out.println("    !      ");
			break;
		}
	}
}





package     ;

public class A03 {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		A03class A03= new A03class();
		A03.D();
	}
}