Java: Random long value in an interval

Question

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Java: random long number in 0 <= x < n range

I want to generate a random long value in an interval but it seems that the Random class nextLong() doesn't accept arguments like nextInt(). What can I do here?

Answer 1

If you want range based long values then do the below:

 long LOWER_RANGE = 0; //assign lower range value
 long UPPER_RANGE = 1000000; //assign upper range value
 Random random = new Random();


 long randomValue = LOWER_RANGE + 
                           (long)(random.nextDouble()*(UPPER_RANGE - LOWER_RANGE));