This week's book giveaway is in the OO, Patterns, UML and Refactoring forum. We're giving away four copies of Refactoring for Software Design Smells: Managing Technical Debt and have Girish Suryanarayana, Ganesh Samarthyam & Tushar Sharma on-line! See this thread for details.
It's up to you, it depends on what style you personally prefer. If you add the "this", it makes it explicitly clear that you're calling a method on the current object. Personally, I prefer to not use the "this" too much in Java.
Note: "this" is not an operator, it's simply a reference to the current object. [ October 24, 2008: Message edited by: Jesper Young ]