How to get a random value from some range list.

Here is a simple code example.

 public class RandomRange
 {
    public RandomRange(){}

    public static long getRandomNumber(int START, int END)
    {
        Random random = new Random();
        return showRandomInteger(START,END,random);
    }

    private static long showRandomInteger(int aStart, int aEnd, Random aRandom){
    if ( aStart > aEnd ) {
      throw new IllegalArgumentException("Start cannot exceed End in RandomRange.class");
    }
    //get the range, casting to long to avoid overflow problems
    long range = (long)aEnd - (long)aStart + 1;
    // compute a fraction of the range, 0 <= frac < range
    long fraction = (long)(range * aRandom.nextDouble());
    return (fraction + aStart);
   }
 }