1. JDK download
jdk1.8 version download address:
http://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html
Enter the download interface and select accept, download the 64-bit jdk of version 1.8 (according to your computer version), as shown in the figure
2. JDK installation
Run the downloaded jdk, as shown in the figure:
The installation process is as follows:
In this step, you should remember the installation address to facilitate subsequent jdk configuration
Installed files:
3. JDK configuration
Configuration of environment variables (three):
JAVA_HOME : C:\Program Files\Java\jdk1.8.0_171
PATH: %JAVA_HOME%\bin
%JAVA_HOME%\jre\bin
CLASSPATH: .;%JAVA_HOME%\lib\dt.jar;%JAVA_HOME%\lib\tools.jar（，；%JAVA_HOME%\lib）
The meaning of each variable:
%JAVA_HOME% represents the C:\Program Files\Java\jdk1.8.0_171 path, which can be replaced in the path and classpath variables
JAVA_HOME: As the name suggests, the installation directory of jdk
PATH: The path to be searched by the Windows system when executing commands
CLASS_PATH: The path of the class to be loaded by Java when compiling and running
The configuration steps are as follows:
Verify that the jdk installation is successful, win+R to enter cmd:
Type the java and java -version commands respectively, if the following status appears, the installation is successful
