Question

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Generating random number in a range with Java

My code is generating random numbers between 0 and 1.
I need to generate a random number between 0.5 and 6.28.

My current Code:

public class Random_Number_Generator
{
    double randomGenerator()
    {
        Random generator = new Random();
        double num = generator.nextDouble();

        return num;
    }
}

Answer 1

double num = generator.nextDouble()*(6.28-0.5) + 0.5;

As nextDouble returns a number in [0, 1[, you generally have to do

double num = generator.nextDouble()*(max-min) + min;

when you want a number in [min, max[.