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 trialChristian Thieme
9,448 PointsWhy is he adding the (Treet) before the code in this - ((Treet) someStuff[0]).getDescription();
I don't understand why he is adding the (Treet) before the code in this - ((Treet) someStuff[0]).getDescription();
I get all the code after the Treet, but don't understand why he added that at the beginning.
This is not the best treehouse video i've ever seen. This one could be revamped.
1 Answer
Seth Kroger
56,413 PointsIn this video, someStuff is an array of Objects. Because each item in the array is treated like an Object, and Objects don't have a getDescription method like Treet does, the item needs to be cast to a Treet to access it. It's equivalent to:
Treet aTreet = (Treet) someStuff[0];
aTreet.getDescrption();
It's just compressed into one line, and the extra parentheses are there to make the order of operations correct (to cast the item from the array, not the result of getDescription()).