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 Using ArrayLists

Rik-Jan van Bree
Rik-Jan van Bree
1,084 Points
Posted by Rik-Jan van Bree
Rik-Jan van Bree
1,084 Points

Why is the getWords method in the array parsed to a list? - why not create a list directly, without the array

Why getWords method is the array parsed to a list? (getWords is updated around 5:00 in video) - why not create a list directly, fill it and return the list, without creating the array. This feels inefficient.

2 Answers

Matthew Hardy
Matthew Hardy
4,063 Points
Matthew Hardy
Matthew Hardy
4,063 Points

This is because the .split() method that is being called returns an array so we must first create the array then convert it to a list using the Arrays.asList() method.