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.
They definitely serve the same purpose. These methods have been in demand for years; not only Google, but also Apache Commons Lang has them. Oracle (or actually Sun) should have added them long before.
You need to check the source code of both to see whether or not they are implemented the same. Oracle's code can be found in the src.zip file inside the JDK folder.