자바 2차원배열 방예약하기

package jongkyu.roomsearch;

import java.util.Random;

import java.util.Scanner;

public class Roomsearch {

Scanner sc = new Scanner(System.in);

Random r = new Random();

int room1;

int room2;

int check;

int number;

public void roomsearch() {

System.out.print("층수를 입력하세요 : ");

room1 = sc.nextInt();

System.out.print("방수를 입력하세요: ");

room2 = sc.nextInt();

int [][]room= new int[room1][room2];

for(int i=0; i<room1; i++) {

for(int j=0; j<room2; j++) {

room[i][j]=0;

}

}

while(true) {

System.out.println("1. Check In / 2. Check out / 3. Search / 4. Exit");

System.out.print("Input");

int input = sc.nextInt();

switch(input){

case 1 : 

System.out.print("몇층을 원하시나요? :");//층수

check=sc.nextInt();

System.out.print("호수가 어떻게 되나요?");//호수

number = sc.nextInt();

if(room[check][number]==0) {

System.out.println("Ok...Now room is Check in");

room[check][number]=1;

}

else {

System.out.println("No......Now room is already Check in");

break;

}

break;

case 2 :

System.out.print("몇층인가요?");

check = sc.nextInt();

System.out.println("호수가 어떻게 되나요?");

number = sc.nextInt();

if(room[check][number]==1) {

System.out.println("Ok...Now room is Check out");

room[check][number]=0;

}

else {

System.out.println("No......Now room is already Check out");

break;

}

break;

case 3 : 

System.out.println("비어있는 방이 몇개 없습니다 빠른 예약 부탁드립니다.");

for(int i=room1-1; i>=0; i--) {

for(int j=room2-1; j>=0; j--) {

if(room[i][j]==0)

System.out.print("가능\t");

if(room[i][j]==1)

System.out.print("불가능\t");

}

System.out.println("");

}

System.out.println("");

break;

case 4 : return;

}

}

}

}