Answers for "generer un random en java 4 digit number"

java random 6 digit number

public static String getRandomNumberString() {
    // It will generate 6 digit random Number.
    // from 0 to 999999
    Random rnd = new Random();
    int number = rnd.nextInt(999999);

    // this will convert any number sequence into 6 character.
    return String.format("%06d", number);
}

java random number generator 4

currentIndex++;
int tmp = state[currentIndex];
tmp ^= (tmp >>> 11);
tmp ^= (tmp << 7) & 0x9d2c5680;
tmp ^= (tmp << 15) & 0xefc60000;
tmp ^= (tmp >>> 18);
return tmp;