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 Generics in Java Generics in Java A Common Problem

Posted by Jake Lee
Jake Lee
2,789 Points

is "thing" null? Object thing = contents; contents = null; return thing;

is "thing" null? First, object thing is assigned "contents". Second, "contents" is assigned null. Is "thing" now null?

Object thing = contents; contents = null; return thing;

1 Answer

Steven Parker
Steven Parker
231,184 Points
Steven Parker
Steven Parker
231,184 Points

Assigning "contents" will not change "thing".
The value of "thing" will be what "contents" had before being assigned with null.