The JDK is a development environment for building applications, applets, and components using the Java programming language. The JDK includes tools useful for developing and testing programs written in the Java programming language and running on the Java TM platform.

In order to be able to compile Java code, we need the Java Development Kit (JDK) package that comes with a Java compiler. The JDK package also comes with a Java runtime environment (JRE) that is needed to run compiled Java code.

Apr 15, 2025 · The release information on this page covers the JDK releases that were widely distributed or significant to the development of Java. It does not cover patch releases or other one-off releases.

Jan 12, 2010 · JDK means Java Development Kit 6. It's an implementation of the Java SE 6 platform as specified by JSR 270 together with a set of development tools (the implementation of the platform without the development tools is called the JRE: Java Runtime Environment).

The JDK includes the compiler and other tools needed to develop Java applications; JRE does not. The JDK also includes a JRE. So, to run a Java application someone else provides, you need a JRE; to develop a Java application, you need a JDK.

Dec 10, 2014 · Due to significant popularity within the Java developer community, the development kit has reverted back to the name "JDK" from "Java 2 SDK" (or "J2SDK"). The runtime environment has reverted back to "JRE" from "J2RE." (Note that "JDK" stands for "J2SE Development Kit" in version 5.0.)

To learn JDBC, you have to a copy of JDK (Java Development Kit) installed on your machine. The latest version of JDK is JDK 6u2 (Java (TM) SE Development Kit 6 Update 2), which is also called Java SE 6 (Java Standard Edition 6). Here is what I did to …

JDK 9 & Later. Oracle's OpenJDK JDK binaries for Windows, macOS, and Linux are available on release-specific pages of jdk.java.net as .tar.gz or .zip archives. As an example, the archives for JDK 13 may be found on jdk.java.net/13 and may be extracted on the command line using $ tar xvf openjdk-13*_bin.tar.gz. or $ unzip openjdk-13*_bin.zip

OpenJDK 6 was an implementation of the Java SE 6 specification valuing stability, compatibility, and security. Various binaries derived from OpenJDK 6 sources passed the Java SE 6 Test Compatibility Kit (TCK) suite, including packages for Fedora 9 and Ubuntu 9.04.

Mainly I have changed the JDK from 1.6.0_26 to 1.6.0_31 as this is the recommended JDK for CDH4 . I have a 64 bit version of Ubuntu 12.04 LTS installed, so the instructions below only apply to this OS.