random number generator starting with 0 java

Question

I'm trying to make a random number generator starting with the number 0 and going to 3. Right now I have this:

Random dealerNum = new Random();
int dealer = dealerNum.nextInt(3); 

Answer 1

you can use Min + (int)(Math.random() * ((Max - Min) + 1)) for generate random number.

A random integer value in the range [Min, Max] Min = 0 and Max = 3

0 + (int)(Math.random() * ((3 - 0) + 1)) => (int)(Math.random() * 4)

int dealer = (int) (Math.random() * 4); This will generate random int between 0 and 3 in java.

Answer 2

int dealer = (int) (Math.random() * 4);

This will give you a random int between 0 and 3. But your code also should work too.