I have written several ArrayList tutorials, touching different ArrayList concepts and many how to do examples with ArrayList. In this tutorial, I am giving a summary of each of them. Why? So that any Java beginner who wants to learn ArrayList in detail, can go through the relevant tutorial and learn. It's also on request of many of my readers, who asked in past to share all the relevant tutorials in one place. Why should you learn ArrayList? Because, it's the most important Collection class in Java. You will often find yourself using ArrayList and HashMap in tandem. It's your dynamic array which can resize itself as it grows. In another word, ArrayList is as much important as an array. When I started learning Java, my quest to ArrayList starts as a dynamic array, because there were many scenario where we don't know the size of the array in advance. We end up either allocating less space or more space, both are not ideal. Btw, you should also check out Head First Java 2nd Edition if you are newbie and Effective Java 2nd Edition, if you know Java but wants to become a Java expert.
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