No, not in any one run of the program. Like a combination lock, any wrong number will cause the lock to fail to open.
Here is the program with some additional details filled in, and some details that you are to fill in:
_______________ class ComboLock { public static void main ( String[] args ) _______________ { int lockFirst = 6, lockSecond = 12, lockThird = 30; // The combination int numb; // a user-entered number BufferedReader stdin = new BufferedReader( new InputStreamReader( System.in ) ); String input; boolean correct = true; //First Number System.out.println("Enter first number: "); input = stdin.readLine(); numb = Integer.parseInt( input ); if ( _______________ ) correct = _______________ ; //Second Number //Third Number //Result if ( correct ) System.out.println("Lock opens"); else System.out.println("Lock does not open"); } }