Java is a Object oriented programming language developed by James Gosling at Sun Microsystems. Java is a platform independent, secure, multithreaded, architecture neutral, portable and, robust language. Java is widely used for application & web development. Syntax of java is very similar of C and C++ so it is called simple language. Java removes the complexity of pointer in it. Core java divided in two part Applet & Application. Applet can be embed or share on internet with the help HTML.