Collection framework in java: Collections in Java are an essential part

Collections in Java are an essential part of the Java framework, providing powerful data structures to store and manage objects efficiently. This article explores the Java Collections Framework (JCF), its key interfaces and classes, and how to use them effectively. A data structure is a collection of data organized in some fashion. The structure not only stores data but also supports operations for accessing and manipulating the data. The java.util package contains one of Java’s most powerful subsystems: The Collections Framework. Java Collection Framework Java collection framework represents a hierarchy of set of interfaces and classes that are used to manipulate group of objects. Collections framework was added to Java 1.2 version. Prior to Java 2, Java provided adhoc classes such as Dictionary, Vector, Stack and Properties to store and manipulate groups of objects. The Java Collections Framework provides a set of interfaces (like List, Set, and Map) and a set of classes (ArrayList, HashSet, HashMap, etc.) that implement those interfaces.