Mastering Object-Oriented Programming

Java was developed by Sun Microsystems in the early 1990s with the goal of enabling software to run across different types of devices without modification. This led to the well-known slogan: Write once run anywhere (WORA). Java is widely recognized for its high level of hardware and operating system independence.Initially Java was introduced as a platform for running client-side applets within web browsers. Early Java applications included the HotJava web browser and the HotJava Views suite. However Java eventually found greater success on the server side of web-based development.The Java platform is composed of three core components:The Java programming languageThe Java Virtual Machine (JVM)A wide range of Java Application Programming Interfaces (APIs).Java is a fully object-oriented programming language. Since its official release in late 1995 it has become one of the most widely used programming languages worldwide.Java source code is compiled into bytecode which can be executed on any device equipped with a JVM regardless of the underlying hardware or operating system.