How to make this work?

Hi so I have to make program that generates two random numbers that puts it in a DataSet and gives the average and maximum. Here is what I have so far if anyone is willing to help me please. I was not explictly told to make two programs for it but that is how my teacher usually wants it to be set up so I made two. One has also the abtract information while the other is the generator, that has the main method to make it run.

Here is the abract class...

import java.util.Random;
public class Data
{
  public Data(int n)
  {
  sum = 0;
  count = 0;
  maximum = 0;
  number=n;
  generator = new Random();
  }

  public void add(double x)
  {
  sum = sum + x;
  if (count == 0 || maximum < x)
  maximum = x;
  count++;
  }

  public double getAverage()
  {
  if (count == 0) return 0;
  else return sum / count;
  }

  public double getMaximum()
  {
  return maximum;
  }

  public int DataSet()
  {
  return 1 +generator.nextInt(number);
  }

private double sum;
private double maximum;
private Random generator;
private int number;
private int count;
}

And here is the other piece for it that has the main method to make it run...

  import java.util.Scanner;
  public class RandomNumberAnalyzer
  {
  public static void main(String[] args)
  {
  Scanner in = new Scanner(System.in);
  Data data = new Data(0-1000);

  final int TRIES = 2;
  for (int i = 1; i <= TRIES; i++) {
  int n = data.DataSet();
  System.out.print(n + " ");
   System.out.println();
  System.out.println("Average = " + data.getAverage());
  System.out.println("Maximum = " + data.getMaximum());

  }
       }
  }
  }
  }
  }