avoiding off by one error when generating random numbers [duplicate]

This question already has an answer here:

• Generating a Random Number between 1 and 10 Java [duplicate] 3 answers

I have the following code:

Random random = new Random();
int num1 = random.nextInt(5);

What are my possible values for num1?

0, 1, 2, 3, 4, 5

or

0, 1, 2, 3, 4