Welcome to the Treehouse Community

The Treehouse Community is a meeting place for developers, designers, and programmers of all backgrounds and skill levels to get support. Collaborate here on code errors or bugs that you need feedback on, or asking for an extra set of eyes on your latest project. Join thousands of Treehouse students and alumni in the community today. (Note: Only Treehouse students can comment or ask questions, but non-students are welcome to browse our conversations.)

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and a supportive community. Start your free trial today.

Java Java Objects Meet Objects Final

Brendan Passey
Brendan Passey
999 Points

How do you know which characterName this.characterName refers to????

I had assumed it would always refer to the characterName we'd just typed in the brackets at 2.06 he says it refers to the characterName in line 2. Does it always refer to the first one declared or something?

2 Answers

Steven Parker
Steven Parker
216,165 Points

Since the function has a parameter named "characterName", that will refer to the parameter when used by itself. But when you reference "this.characterName", it refers to the class variable defined on line 2.

Putting a "this." prefix on a name refers to something in the class rather than a local variable of parameter of the method.