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 Basic Android Programming Using the Random Class

Create a String variable named intAsString. Convert the randomNumber integer to a String value and store it in the intAs

Create a String variable named intAsString. Convert the randomNumber integer to a String value and store it in the intAsString variable. Hint: Add them together like in the video!

RandomTest.java
Random randomGenerator = new Random();
int randNumber = randomGenerator.nextInt(10);

1 Answer

Jennifer Nordell
seal-mask
STAFF
.a{fill-rule:evenodd;}techdegree
Jennifer Nordell
Treehouse Teacher

Hi there! I wish I knew what you were trying that's failing, but I can already spot one error. Your randNumber is supposed to be randomNumber as required by the challenge specifications.

Java has something we call type inference. Some languages cannot add a string and a number together. But if you try to do this in Java, it understands that what you want is a string and will convert the result to a string. So we're going to use this trick:

Random randomGenerator = new Random();
int randomNumber = randomGenerator.nextInt(10);
String intAsString = randomNumber + "";

By adding an empty string to our randomNumber it will convert the result to a string and store it back into intAsString.

This was covered at about 3:39 in this video https://teamtreehouse.com/library/build-a-simple-android-app-2/basic-android-programming/generating-a-random-number

Hope this helps! :sparkles: