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.
Get the value AFTER you submit it? That would be a server-side question. Since you mention Java, I suggest you ask in the Java forum. All values are packaged in the RESPONSE object, but that object is exposed in different ways in different languages.