The Java Development Kit is a collection of tools that developers use to deploy applications written in Java. It's not for writing apps but rather for compiling, debugging, and deploying Java apps in a variety of applications and platforms, such as Windows and Android. We looked at JDK Version 8 for 32-bit Windows. The latest update includes various bug and security fixes.
Toolset: Java Developer Kit offers a vast selection of "goodies" including javac (compiler), jar (archiver), and jdb (debugger).
Up to date: The JDK packs a lot for a free toolkit, but it's also updated regularly, experimental tools are sometimes available, and it works with other SDKs and tools.
Private runtime: The JDK includes a full private Java Runtime Environment consisting of a Java Virtual Machine and full set of libraries.
What could go wrong? The JDK helps you debug Java, but some users have encountered issues using it in certain platforms, such as Android. The good news is that copious troubleshooting resources are a search away.
Don't say SDK: JDK is the preferred name for the Java SE Development Kit, since the Java EE SDK comes with or without the JDK. It's a bit confusing, but at least you have options.
It should be pretty obvious that the Java Development Kit isn't something the average Windows user needs (or wants, really). But the JDK is a powerful toolkit for Java programmers, and it's free.
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. 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. 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 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 present in the production environment, as well as additional libraries only useful to developers, and such as the internationalization libraries and the IDL libraries.
What's new in this version:
- Java Mission Control: This JDK release includes Java Mission Control (JMC) version 5.4.
- Advanced Management Console (AMC) 1.0
- New flags added to Java Management API
- Java Installer Changes: A new Microsoft Windows Installer (MSI) Enterprise JRE Installer which enables user to install the JRE across the enterprise, is available. The Java Uninstall Tool is integrated with the installer to provide an option to remove older versions of Java from the system.... See all new features »