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Android Build a Simple Android App (2014) Basic Android Programming Using the Random Class

Uros Dukic
Uros Dukic
1,001 Points
Posted by Uros Dukic
Uros Dukic
1,001 Points

android coding problem

Now limit the range of the randomNumber variable from 0 to 9. Use the version of nextInt() that has a parameter that specifies how many numbers to choose from. Bummer! There is a compiler error. Please click on preview to view your syntax errors!

2 Answers

Justin Horner
STAFF
Justin Horner
Treehouse Guest Teacher
Justin Horner
Justin Horner
Treehouse Guest Teacher

Hell Uros,

In order to accomplish this you'll need to pass the nextInt method a value of 10. This will generate a random number between 0 and 9 because the 0 is inclusive and the value you provide is exclusive. From the documentation

Returns a pseudorandom, uniformly distributed int value between 0 (inclusive) and the specified value (exclusive), drawn from this random number generator's sequence.

I hope this helps.

Durant RIchardson
Durant RIchardson
1,505 Points
Durant RIchardson
Durant RIchardson
1,505 Points 
int randomNumber = randomGenerator.nextInt(10);

This is how the line of code will look using Justin's explanation of why the value is 10. Hope this helps!