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Java Collections Framework

Collection Framework

A collection represents a group of object Java collections provide classes and Interfaces for us to be able to write code interfaces for us to be able to write code quickly and efficiently.

Why do we need collections
We need collections for efficient storage and better manipulation of data in java
For ex: we use arrays to store integers but what if we want to

Resize this array?
Insert an element in between?
Delete an elements in Array?
Apply certain operations to change this array?



import java.util.ArrayList;
import java.util.Set;
import java.util.TreeSet;

public class cwh_89_collections {
    public static void main(String[] args) {
        // ArrayList
        // Set
        // TreeSet


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