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.
I have a question relating to the uniqueness of keys in HashMap. I wrote this program and apparently the HashMap seems to be accepting duplicate keys. Could some one please point out what I am doing wrong or if I am missing something?