New to Java

package atm;
import java.io.*;
import java.util.logging.Level;
import java.util.logging.Logger;


public class PinCheck {

    public String enterPin() {
        String inputPinNo2 = "0000";
        InputStreamReader keyInput = new InputStreamReader(System.in);
        BufferedReader buffInput = new BufferedReader(keyInput);
        System.out.print("Enter pin: ");
        try {
            inputPinNo2 = buffInput.readLine();
        } catch (IOException ex) {
        Logger.getLogger(PinCheck.class.getName()).log(Level.SEVERE, null, ex);
        }
        return inputPinNo2;
    }

    public static void main(String[] args) {
        int pinRetries = 0;
        String pinNo = "0907";
        String inputPinNo = "0907";
        do
        {
            PinCheck enterPinNo = new PinCheck();
            inputPinNo = enterPinNo.enterPin();
            if (!(pinNo.equals(inputPinNo)))
            {
                System.out.println("Wrong Pin");
                pinRetries++;
            }
            else
            {
                System.out.println("Access granted");
                pinRetries = 0;
                break;
            }
        } while (pinRetries < 3);
        if (pinRetries == 3)
        {
            System.out.println("Account blocked");
        }
        else
        {
            System.out.println("Welcome!");
        }
    }
}

There's my code for the PIN. It asks the user for a PIN. If it's correct, it displays "Welcome". If it's not, the same question is asked 3 times until the user gets the correct PIN, or its account gets blocked.

It's working, but I think it maybe too long or too inefficient. I'm new to Java programming. Can anybody comment and/or optimize this code? Please? Thank you very much.