ArrayList: Java Collections Framework Tutorial Part 2

ArrayList: Java Collections Framework Tutorial Part 2:

Java ArrayList class:

Java ArrayList class uses a dynamic array for storing the elements. It inherits AbstractList class and implements List interface.

The important points about Java ArrayList class are:

+Java ArrayList class can contain duplicate elements.
+Java ArrayList class maintains insertion order.
+Java ArrayList class is non synchronized.
+Java ArrayList allows random access because array works at the index basis.
+In Java ArrayList class, manipulation is slow because a lot of shifting needs to be occurred if any element is removed from the array list.

Learn:
+Static Array and Dynamic Array
+How to get the size of array list
+Iterate Array List using for loop and Iterator
+Generics vs Non-Generics in ArrayList
+Add, Merge, Retain and User Defined Class Objects in Array List

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