Welcome to the Treehouse Community

The Treehouse Community is a meeting place for developers, designers, and programmers of all backgrounds and skill levels to get support. Collaborate here on code errors or bugs that you need feedback on, or asking for an extra set of eyes on your latest project. Join thousands of Treehouse students and alumni in the community today. (Note: Only Treehouse students can comment or ask questions, but non-students are welcome to browse our conversations.)

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and a supportive community. Start your free trial today.

Android Build a Simple Android App Basic Android Programming Using the Random Class

I do not understand how to do the challenge

Random randomGenerator = new Random(); int randomNumber = randomGenerator.nextInt(facts.length); fact = facts[randomNumber];

RandomTest.java

2 Answers

Arturo Alviar
Arturo Alviar
15,739 Points

Use the number ten rather than facts.length.
The facts variable is not defined in the challenge.

Grigorij Schleifer
Grigorij Schleifer
10,363 Points

Hi Bruce,

I commented the challenge a little:

Random randomGenerator;
// TASK 1
randomGenerator = new Random();

// TASK 2
// int randomNumber = randomGenerator.nextInt(); 
// here the generator will create a rundom number without a range

// TASK3
int randomNumber = randomGenerator.nextInt(10); 
// here the generator will create a rundom number between 0 an 9

String intAsString = Integer.toString(randomNumber);
// create a new String variable and convert the int "randomNumber" into a String using toString method

Grigorij

Thank you a lot i really appreciate the help.