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.
Mughal has a nice set of diagrams showing the main collection interfaces and classes. What to study: Collections class Collection interface List interface Iterator interface ListIterator interface Vector class ArrayList class LinkedList class Set interface TreeSet class Map interface HashMap class Hashtable class Comparator interface Comparative interface -anthony