Using a FOR loop in JAVA to make 4 random numbers that together meet a certain condition

I am trying to have a randomly generated "Password" that can be verified by the fact that the 4 numbers in the sequence added together equal 21. I have already achieved my goal with a do.... while... loop. It looks like this:

int rand0;
    int rand1;
    int rand2;
    int rand3;
    do {
    rand0 = (int)(Math.random() * 10);
    rand1 = (int)(Math.random() * 10);
    rand2 = (int)(Math.random() * 10);
    rand3 = (int)(Math.random() * 10);
        }
     while ((rand0 + rand1 + rand2 + rand3) != 21);
     System.out.println(rand0 + "" + rand1 + "" + rand2 + "" + rand3);

But I am looking for a way to achieve the same thing using a FOR loop. I am not sure if it is possible. I have made some attempts, this is my latest though it obviously failed. Any insight would be greatly appreciated:

int     pass1,
        pass2,
        pass3,
        pass4;
    for ((String passWrd = pass1 + "" + pass2 + "" + pass3 + "" + pass4);
        ((pass1 + pass2 + pass3 + pass4) == 21);
        (pass1 = (int) (Math.random() * 10)),
        (pass2 = (int) (Math.random() * 10)),
        (pass3 = (int) (Math.random() * 10)),
        (pass4 = (int) (Math.random() * 10))) {
    System.out.println(passWrd);
          break;
        }