Java Development Kit

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The Java Development Kit (JDK) is a Sun product aimed at Java developers. Since the introduction of Java, it has been by far the most widely used Java SDK.

JDK (Java Development Kit): JDK is Sun's Java compiler. It contains the minimal set of tools you need to develop Java programs. Its current version is 1.5. This product is always available free from Sun, downloadable from the Web at http://java.sun.com/products/jdk/ (JDK 1.6 is out in beta and due out in final version soon.)

The primary components of the JDK are a selection of programming tools, including:

• javac – The compiler, which converts source code into Java bytecode
• jar – The archiver, which packages related class libraries into a single JAR file
• javadoc – The documentation generator, which automatically generates documentation from source code comments
• jdb – The debugger

The JDK also comes with a complete Java Runtime Environment, usually called a private runtime. It consists of a Java Virtual Machine and all of the class libraries that will be present in the production environment, as well as additional libraries only useful to developers, such as the internationalization libraries and the IDL libraries.

Also included are a wide selection of example programs demonstrating the use of almost all portions of the Java API.

See also

• Java platform
• Classpath (Java)
• Java Virtual Machine

External links

• Sun J2SE – Sun's current stable release (1.5.0).
• [1] Open source JDK 6 development
• [2] Open source JDK project
• [3] Community support
• Mustang – Sun's beta releases of its JVM and JDK (1.6.0).
• GNU Classpath – a free JDK replacement.
• Apache Harmony under the Apache License 2.0
• IBM JDK – IBM's JDK.
• Blackdown – Free JVM/JDK for Linux.
• Apple Java – JVM/JDK for Mac OS X.
• Install JDK in Debian