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The following Java code can be used when wanting to create an array containing random elements. You can easily specify the length of the array and the range of values that the random elements can take.

The randomIntArray() Java method shown below returns an array that contains random elements.

// creates random array of elements of value 0 to n-1
public static int[] randomIntArray(int length, int n)
{
  int[] a = new int[length];
  Random generator = new Random();
  // for each item in the list
  for (int i = 0; i < a.length; i++)
  {
      // create a new random number and populate the
      // current location in the list with it
      a[i] = generator.nextInt(n);
  }
  return a;
}