Need help with a Java programming assignment

Never mind.

Easiest solution would be to allocate another array of 8 random non-repeating numbers for your lottery.

Code:

int countV=0;
    while (countV<8)
    {
        int num=(int)(1+Math.random()*(30));        
        for (int i=0;i<=array1.length-1 ;i++ )
        {
            if (num == array1[i].getLotID() && array1[i].getFlag())
                countV--;
            else if (num == array1[i].getLotID())
            {                
                
                //System.out.println("TEST");
                //System.out.println(array1[i].toStringP());
                array1[i].setVehicleProject(array[countV]);        
                array1[i].setFlag(true);
            }
        }
        countV++;        
    }
    for (int i=0;i<=array1.length-1 ;i++ )
    {
        if (array1[i].getFlag())
        {
            System.out.println(array1[i].getFirstName()+" is a Winner");
        }
        else
        {
            System.out.println(array1[i].getFirstName()+" is a Loser");
        }
    }

This should work too, though I'm not 100% sure about the implementation of your code.