Vector Class In Collection Framework

Vector class in present under java.util package. Vector underlying data structure is resizable or grow-able array. As Vector implements List interface, so duplicates objects are...

LinkedList Class In Collection Framework

LinkedList collection class in present under java.util package. LinkedList underlying data structure is double linked list. As LinkedList implements List interface, so duplicates are allowed...

ArrayList Class In Java Collection Framework

ArrayList(under java.util package) is one of the most widely used Collection class in Java. ArrayList underlying data structure is re-sizable Array (Grow-able Array). As ArrayList...

Collection and Collection Framework

Before going ahead, read why we do we need collection in java published in previous post. What is Collection? If we want to represent a group of...

Why do we need collections in Java

Before using any collections in java we should have knowledge that why do we need collections. Suppose, If collections were not there in Java  and we...