Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

Android Build a Simple Android App (retired 2014) Learning the Language Objects and Random Numbers

Posted by David Bell
David Bell
208 Points

Now limit the range of the randomNumber variable from 0 to 9. Use the version of 'nextInt()' that has a parameter that s

I don't know what's wrong??

3 Answers

Ben Jakuben
STAFF
Ben Jakuben
Treehouse Teacher
Ben Jakuben
Ben Jakuben
Treehouse Teacher

Hi David Bell, can you post in the code you are trying? I have a hunch that you might just need to change the number you're using to generate the random number.

Joshua Scott
Joshua Scott
540 Points
Joshua Scott
Joshua Scott
540 Points

Hey Ben, love the course, but I'm having a little trouble with this part. Here's my code so far:

Random randomGenerator = new Random();
int randomNumber = randomGenerator.nextInt(9);
answer = Integer.toString(randomNumber);
Ben Jakuben
Ben Jakuben
Treehouse Teacher
Ben Jakuben
Ben Jakuben
Treehouse Teacher

Ah, you're skipping ahead! Remove that last line (or comment it out) and you'll receive a helpful error message about your second line.

Tarvo Mäesepp
PLUS
Tarvo Mäesepp
Courses Plus Student 215 Points
Tarvo Mäesepp
Tarvo Mäesepp
Courses Plus Student 215 Points

I have the same problem, my code is:

Random randomGenerator = new Random();

int randomNumber = randomGenerator.nextInt(10);

intAsString = Integer.toString(randomNumber);

Topan Lutfi
Topan Lutfi
539 Points
Topan Lutfi
Topan Lutfi
539 Points

randomGenerator.nextInt(3); gives your a number between 0 and 2 randomGenerator.nextInt(10); gives you a number between 0 and 9

that answer from @Roman Mayer