The JDK (Java Development Kit,java Development Kit, Java Development tool) is a program development environment that writes Java applets and applications. It consists of a running environment on the operating system level, as well as a developer compiling, debugging, and running the tools required for applets and applications written in the Java language.
The JDK (Java Development Kit) is a product of the Sun Microsystems for Java developers. Since the launch of Java, JDK has become the most widely used Java SDK (Software Development Kit).
The basic components included in the JDK include:
javac– compiler to convert source program to byte code
jar– Packaging Tool to package related class files into a single file
javadoc– Document Builder, extracting documents from source comments
Jdb–debugger, check the wrong tool.
The JDK also includes the complete JRE (Java Runtime Environment,java Runtime Environment), also known as Private Runtime. Includes a variety of library classes for the product environment, as well as supplemental libraries for developers, such as internationalized libraries and IDL libraries.
The JDK also includes a variety of example programs to showcase the various parts of the Java API.
JDK Official Downloads
JDK1.5:
Http://cds.sun.com/is-bin/INTERSHOP.enfinity/WFS/CDS-CDS_Developer-Site/en_US/-/USD/VerifyItem-Start/jdk-1_5_0 _07-windows-i586-p.exe? Bundledlineitemuuid=1y5ibe.mongaaaehqaqh6rqu&orderid=bjfibe.miusaaaehjaqh6rqu&productid= 83hacufbfwsaaaeyqnw5axum&filename=/jdk-1_5_0_07-windows-i586-p.exe
JDK1.6:
Http://www.java.net/download/jdk6/6u10/promoted/b32/binaries/jdk-6u10-rc2-bin-b32-windows-i586-p-12_sep_2008.exe
JDK 1.7:
Http://www.java.net/download/jdk7/archive/b134/binaries/jdk-7-ea-bin-b134-windows-i586-17_mar_2011.exe
Http://www.java.net/download/jdk7/archive/b138/binaries/jdk-7-ea-bin-b138-windows-i586-14_apr_2011.exe
Http://download.oracle.com/otn-pub/java/jdk/7/jdk-7-windows-i586.exe
JDK API Help Documentation:
JDK 5:
Java SE 5 API Chinese version CHM download: Http://download.java.net/jdk/jdk-api-localizations/jdk-api-zh-cn/builds/JDK_API_1_5_zh_CN.CHM
JAVASE5 EN Downloads:http://javadoc.allimant.org/dist/jdk150.zip
JDK 6:
JDK6 API Chinese version download: https://jdk-api-zh-cn.dev.java.net/
JDK6 API Chinese HTML format online document: http://download.java.net/jdk/jdk-api-localizations/jdk-api-zh-cn/builds/latest/html/zh_CN/api/
JDK6 API Chinese version zip format download: http://download.java.net/jdk/jdk-api-localizations/jdk-api-zh-cn/builds/latest/html_zh_CN.zip
JDK6 API chm Chinese reference download: Http://chinesedocument.com/upimg/soft/JDK6API Chinese reference 070114.rar
Java SE 6 API Chinese version CHM download: http://download.java.net/jdk/jdk-api-localizations/jdk-api-zh-cn/publish/1.6.0/chm/JDK_API_ 1_6_zh_cn. Chm
zip Format: http://download.java.net/jdk/jdk-api-localizations/jdk-api-zh-cn/publish/1.6.0/html_zh_CN.zip
中文版 version:http://javadoc.allimant.org/dist/j2se6.zip
JDK 7:
中文版 Verson: http://download.java.net/jdk7/docs/api/
http://www.java.net/download/jdk7/archive/b138/ Jdk-7-ea-bin-b138-apidocs-14_apr_2011.zip
Specific detailed version information about the JDK and the download address for all JDK versions refer to the following Web site:
http://java.sun.com/javase/downloads/index.jsp
http://java.sun.com/products/archive/
http://www.allimant.org/javadoc/index.php
http://www.oracle.com/technetwork/java/javase/downloads/ java-se-jdk-7-download-432154.html
Cloud-dwelling community online manual address:
JDK 1.7 Reference manual official English
JDK 1.6 API Java Chinese Reference manual
JDK 1.5 API Java Chinese Reference manual