JDK

Java Development Kit




The Java Development Kit (JDK) is an implementation of either one of the Java SE, Java EE or Java ME platforms[1] released byOracle Corporation in the form of a binary product aimed at Java developers on Solaris, Linux, Mac OS X or Windows. The JDK includes a private JVM and a few other resources to finish the development of a Java Application.[2] Since the introduction of theJava platform, it has been by far the most widely used Software Development Kit (SDK).[citation needed] On 17 November 2006, Sun announced that they would release it under the GNU General Public License (GPL), thus making it free software. This happened in large part on 8 May 2007, when Sun contributed the source code to the OpenJDK.


DK contents


The JDK has as its primary components a collection of programming tools, including:

appletviewer – this tool can be used to run and debug Java applets without a web browser
extcheck – a utility that detects JAR file conflicts
idlj – the IDL-to-Java compiler. This utility generates Java bindings from a given Java IDL file.
jabswitch – the Java Access Bridge. Exposes assistive technologies on Microsoft Windows systems.
java – the loader for Java applications. This tool is an interpreter and can interpret the class files generated by the javac compiler. Now a single launcher is used for both development and deployment. The old deployment launcher, jre, no longer comes with Sun JDK, and instead it has been replaced by this new java loader.
javac – the Java compiler, which converts source code into Java bytecode
javadoc – the documentation generator, which automatically generates documentation from source code comments
jar – the archiver, which packages related class libraries into a single JAR file. This tool also helps manage JAR files.
javafxpackager – tool to package and sign JavaFX applications
jarsigner – the jar signing and verification tool
javah – the C header and stub generator, used to write native methods
javap – the class file disassembler
javaws – the Java Web Start launcher for JNLP applications
JConsole – Java Monitoring and Management Console
jdb – the debugger
jhat – Java Heap Analysis Tool (experimental)
jinfo – This utility gets configuration information from a running Java process or crash dump. (experimental)
jmap – This utility outputs the memory map for Java and can print shared object memory maps or heap memory details of a given process or core dump. (experimental)
jmc – Java Mission Control
jps – Java Virtual Machine Process Status Tool lists the instrumented HotSpot Java Virtual Machines (JVMs) on the target system. (experimental)
jrunscript – Java command-line script shell.
jstack – utility that prints Java stack traces of Java threads (experimental)
jstat – Java Virtual Machine statistics monitoring tool (experimental)
jstatd – jstat daemon (experimental)
keytool – tool for manipulating the keystore
pack200 – JAR compression tool
policytool – the policy creation and management tool, which can determine policy for a Java runtime, specifying which permissions are available for code from various sources
VisualVM – visual tool integrating several command-line JDK tools and lightweight[clarification needed] performance and memory profiling capabilities
wsimport – generates portable JAX-WS artifacts for invoking a web service.
xjc – Part of the Java API for XML Binding (JAXB) API. It accepts an XML schema and generates Java classes.
Experimental tools may not be available in future versions of the JDK.


No comments:

Post a Comment