How to compute absolute value of signed random integer

Question

I'm trying to generate the random number which is stored and I need to return the string value.

Here is My method:

public String generateRand() {
    java.util.Random rand = new java.util.Random(System.currentTimeMillis());
    String rnd = "" + Math.abs(rand.nextInt()) + "" +
       Math.abs(System.currentTimeMillis());
    return rnd;
}

The Findbugs plugin of Jenkins is warning me that there is Bad attempt to compute absolute value of signed random integer.

This code generates a random signed integer and then computes the absolute value of that random integer. If the number returned by the random number generator is Integer.MIN_VALUE, then the result will be negative as well, since Math.abs(Integer.MIN_VALUE) == Integer.MIN_VALUE. Same problem arised for long values as well.

What is the best way to to compute absolute value of signed random integer?

Answer 1

Use rand.nextInt(Integer.MAX_VALUE); instead of Math.abs(rand.nextInt())