怎么下载java sdk

进入oracle公司的java Development网站：http://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html；然后选择需要的版本，点同意协议，就开始下载了。

下载之后安装，一直next，安装完JDK后配置环境变量 计算机→属性→高级系统设置→高级→环境变量；

系统变量→新建 JAVA_HOME 变量 。变量值填写jdk的安装目录

系统变量→寻找 Path 变量→编辑在，变量值最后输入%JAVA_HOME%\bin%JAVA_HOME%\jre\bin

系统变量→新建 CLASSPATH 变量，变量值填写 .%JAVA_HOME%\lib%JAVA_HOME%\lib\tools.jar

检验是否配置成功 运行cmd 输入 java -version （java 和 -version 之间有空格），若显示出版本信息则为配置成功

供你参考!http://www.microsoft.com/msdownload/platformsdk/sdkupdate/

http://download.microsoft.com/download/platformsdk/sdk/update/win98mexp/en-us/3590.2/FULL/PSDK-FULL.1.cab

http://download.microsoft.com/download/platformsdk/sdk/update/win98mexp/en-us/3590.2/FULL/PSDK-FULL.2.cab

http://download.microsoft.com/download/platformsdk/sdk/update/win98mexp/en-us/3590.2/FULL/PSDK-FULL.3.cab

...

http://download.microsoft.com/download/platformsdk/sdk/update/win98mexp/en-us/3590.2/FULL/PSDK-FULL.16.cab

http://download.microsoft.com/download/platformsdk/sdk/update/win98mexp/en-us/3590.2/FULL/PSDK-FULL.1.cab

http://download.microsoft.com/download/platformsdk/sdk/update/win98mexp/en-us/3590.2/FULL/PSDK-FULL.bat

http://download.microsoft.com/download/platformsdk/sdk/update/win98mexp/en-us/3590.2/FULL/Extract.exe

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