import java.util.Random;
Random rand = new Random();
int random_integer = rand.nextInt(upperbound-lowerbound) + lowerbound;int max=6;
int min=1;
//works with negative numbers too!, set to 0 to have it show from 0 to the number.
int randomNumber=(int)(Math.random()*max) + min;double random = ThreadLocalRandom.current().nextDouble(min, max);
import java.util.concurrent.ThreadLocalRandom;
// nextInt is normally exclusive of the top value,
// so add 1 to make it inclusive
int randomNum = ThreadLocalRandom.current().nextInt(min, max + 1);