math.random always give 0 result

Question

I am using Ubuntu 14.04.3 LTS and I am studying Java from the book. I tried to follow one example on the book with Ubuntu Terminal and I\'m using Sublime Text. Here is the code

Answer 1

Math.random() returns a number greater or equal than 0 and less than 1. What you are looking for is either

 int number1 = (int)(Math.random()*10);
 int number2 = (int)(Math.random()*10);

or

 Random rand = new Random();
 int number1 = rand.nextInt(10);
 int number2 = rand.nextInt(10);

Also, to get random number from given range, use this for Math.random()

int number 3 = min + (int)(Math.random() * ((max - min) + 1))

and for random.nextInt()

int number 4 = random.nextInt(max - min) + min;