J2ME: How to generate random number?

Question

I just wanted to know how do I generate random number using J2ME CLDC 1.0 MIDP 2.0 ?

Basically I want to generate a 14 digits random number each time when the menu item Generate is clicked from the mobile's screen.

Answer 1

I'm not really familiar with J2ME, however the Javadoc shows that the Random class is part of the CLDC api, so you can generate a 14 digit number like this:

public static void main(String[] args) {
    Random r = new Random();
    long l = r.nextLong();
    System.out.println(String.format("%015d", l).substring(1, 15));
}

Answer 2

Random r = new Random();
r.nextInt(bottomX-topX)+topX; //will give you the next random integer in range [bottomX,topX]