random no repeat array nb

import java.util.*;
public class MyClass {
    public static void main(String args[]) {
        int[] numbers = new int[30];
        int generated = 0;

        while(generated != 30) {
          boolean tonno = false;
          int random = (int)(Math.random() * 100);
          for(int i = 0; i < 30; i++) {
              if(numbers[i] == random) {
                  tonno = true;
              }
          }

          if(!tonno) {
              numbers[generated] = random;
              generated = generated + 1;
          }
        }


        System.out.println("Generated: ");
        for(int i = 0; i < 30; i++) {
          System.out.print(numbers[i] + " ");
        }
    }
}