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.
That's because java.util.Vector overrides the default toString() implementation provided by java.lang.Object.
If you want to reconstruct the output of the default implementation you should have a look at java.lang.Class#getName() and System.identityHashCode().
Build a man a fire, and he'll be warm for a day. Set a man on fire, and he'll be warm for the rest of his life.