Java Study 第一篇 --- 安装JDK

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 　　1. JDK

　　　　http://www.oracle.com/technetwork/java/javase/downloads/index.html

       2. Java环境变量设置

　　　　To set the PATH variable permanently, add the full path of the jdk1.8.0\bin directory to the PATH variable.

　　　　Typically, this full path looks something like C:\Program Files\Java\jdk1.8.0\bin.

　　　　Set the PATH variable as follows on Microsoft Windows:

• • • Click Start, then Control Panel, then System.
    • Click Advanced, then Environment Variables.
    • Add the location of the bin folder of the JDK installation to the PATH variable in System Variables. The following is a typical value for the PATH variable: 

　　　　　　　　　　C:\WINDOWS\system32;C:\WINDOWS;C:\Program Files\Java\jdk1.8.0\bin

　　　　Note:

• • • The PATH environment variable is a series of directories separated by semicolons (;) and is not case-sensitive. Microsoft Windows looks for programs in the PATH directories in order, from left to right.

    • You should only have one bin directory for a JDK in the path at a time. Those following the first instance are ignored.
    • If you are not sure where to add the JDK path, append it.
    • The new path takes effect in each new command window you open after setting the PATH variable.

     　3. Java相关地址

Java Study 第一篇 --- 安装JDK

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原文地址：http://www.cnblogs.com/acmeryblog/p/5747516.html