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

Java Java Data Structures - Retired Exploring the Java Collection Framework Maps

Kshatriiya .
Kshatriiya .
1,464 Points
Posted by Kshatriiya .
Kshatriiya .
1,464 Points

What if for (Treet treet: treets) { for(String hashtags: treet) { doesn't contain a single String with hashtag?

Does it look back to the first for loop? Because if it doesn't, I feel like it would break the rest of the code.

Can someone confirm this for me please?

Thanks

1 Answer

Seth Kroger
Seth Kroger
56,414 Points
Seth Kroger
Seth Kroger
56,414 Points

If for-each is done on an empty array, the loop never executes because there is nothing to iterate over and it continues on with what it was doing.