JDK comes packing demonstrative source codes and particular APIs using Java Foundation Classes including Swing as well as the Java Platform Debugger Architecture.

You are also given access to the Java Virtual Machine (JVM) component of JRE alongside class libraries and support files in order to implement your applications. While the Java Runtime Environment (JRE) allows you to execute Java applications, components and applets, the Java Development Kit (JDK) delivers a comprehensive set of tools for programmers to build, run, debug and even document the Java code. The Java platform provides one environment to develop software for multiple operating systems such as Microsoft Windows, Mac OS X or Linux distributions. Its features are utilized on most of the electronic equipment worldwide, from PCs, mobile terminals or media players to more sophisticated medical devices.

The Java programming language is, according to the TIOBE programming community index, one of the top choices of software developers, battling for supremacy with the C and C-based languages.

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