int radomInt = new Random().nextInt(999999)

    @org.junit.Test
    public void testName() throws Exception {
        Random random = new Random();
        float radomInt = random.nextInt(999);
        System.out.println(radomInt == 0 ? "000" : (radomInt<100 ? String.valueOf(radomInt/100).replace(".", "") : String.valueOf(radomInt).replace(".0", "")));
        
        
        
        
        int [] arr = new int[3];
        arr[0] = random.nextInt(10);
        arr[1] = random.nextInt(10);
        arr[2] = random.nextInt(10);
        
        System.out.println(""+arr[0]+arr[1]+arr[2]);
    }