Java is an object-oriented programming language (OPP) developed by James Gosling at Sun Microsystems Inc. in May 1995 and is used to build applications for desktop, web, and mobile devices. It is open source, secure, fast, and powerful, easy to learn, and easy to use. As a result, more than 3 billion devices run Java. To build a reliable application in Java, you need to understand its persistence models. Join FITA Academy to improve your career and gain deep insights into Java.