1, open the page www.oracle.com
Download the corresponding platform JDK
2. Double-click to download
Windows32-bit operating systems such as download-8u121-Windows-the JDK i586.exe
Windows64-bit operating system such as download jdk-8u121-windows-x64.exe
3, enter the installation wizard
4, next, change the installation path, select to install all the components ![Here Insert Picture Description](https://img-blog.csdnimg.cn/20200130090604313.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQzNDc2NDMz,size_16,color_FFFFFF,t_70)
(1) to cancel the installation of the JRE independent
since JDK JRE already included, for developers, may not need to install a separate JRE, if you want to cancel the installation JRE,
(2) change the installation path of JDK
Note: The installation directory here contains Java \ JDK1.8.0_51, so next time you can clearly more intuitive to install their own which version of JDK
5, the next step to begin the installation ![Here Insert Picture Description](https://img-blog.csdnimg.cn/20200130091721501.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQzNDc2NDMz,size_16,color_FFFFFF,t_70)
![Here Insert Picture Description](https://img-blog.csdnimg.cn/20200130091727922.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQzNDc2NDMz,size_16,color_FFFFFF,t_70)
![Here Insert Picture Description](https://img-blog.csdnimg.cn/20200130091736858.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQzNDc2NDMz,size_16,color_FFFFFF,t_70)
6, configuration, My Computer / Computer Right Properties, select Advanced System Settings
7, click [Environment Variables]
8, the new variable "JAVA_HOME", is JDK installation
Here Note:
If you are after all developed using JDK under that user, you can choose to create a new user variable;
if it is later hoped that the variables are visible in all users, then select New System Variable;
I am here only one user, clarity is good maintenance, I chose to create a new user variable
9, the JAVA_HOME variable value to the variable path
Note: If you are a new user variable JAVA_HOME, you can only add JAVA_HOME to the path user variables, otherwise the situation could not find JAVA_HOME may occur
if a user no path variable, you can then create a path variable (path variables are the windows system when the command to execute the search path), add JAVA_HOME value; value% JAVA_HOME% \ bin;
if it already exists path, then edit it, the added value of JAVA_HOME in the original value;
recommended to copy original value to Notepad , and then edit, add% JAVA_HOME% \ bin in front of the old value; then copy them back to avoid making mistakes
10, test javac command
11, test java command
12, complete
API Download
Ultimately, while learning Java API (Application Programming Interface) document. Download:
http://www.oracle.com/technetwork/java/javase/downloads/index.html
the scroll bar on the page scroll down to find "Additional Resources"
to download the html version is here, you can choose to make tools into chm version