It consists of a Java Virtual Machine and all of the class libraries present in the production environment, as well as additional libraries only useful to developers, and such as the internationalization libraries and the IDL libraries. The JDK also comes with a complete Java Runtime Environment, usually called a private runtime. This tool also helps manage JAR files, javadoc - the documentation generator, which automatically generates documentation from source code comments, jdb - the debugger, jps - the process status tool, which displays process information for current Java processes, javap - the class file disassembler, and so many other components. The JDK includes tools useful for developing and testing programs written in the Java programming language and running on the Java TM platform. JDK has as its primary components a collection of programming tools, including javac, jar, and the archiver, which packages related class libraries into a single JAR file. Java SE 8 Archive Downloads (JDK 8u202 and earlier) Go to the Oracle Java Archive The JDK is a development environment for building applications using the Java programming language. Java Development Kit contains the software and tools that you need to compile, debug, and run applets and applications that you've written using the Java programming language.

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