Collections in Java, Java I/O Stream,File Class in java, String and StringBuffer Class,DataInputStream , FileInputStream and FileOutputStream Class,FileReader & FileWriter
Java Collection Collection: A collection is an object that represents a group of objects. A collection sometimes called a container — is simply an object that groups multiple elements into a single unit. Collections are used to store, retrieve, manipulate, and communicate aggregate data. A collections framework is a unified architecture for representing and manipulating collections, allowing them to be manipulated independently of the details of their representation. It contains the following: Interfaces Interface Name Description Collection This enables you to work with groups of objects; it is at the top of the collection’s hierarchy. List This extends Collection and an instance of List stores an ordered collection of elements. Set This exte...