First, download
Download Page Enter the official website of jdk1.8 Download
1. In accordance with the red box indicates the first select [Accept License Agreement], installation protocol agreed;
2. Select the Windows x64 (ie, 64-bit operating system), click to download;
JDK download the corresponding information according to given system version, here to install jdk-8u171-windows-x64 Example.
Second, the installation
Set directory D: \ java (recommended to install the D drive)
Double-click the installer
Install jdk, the path to D: \ java \ jdk1.8.0_171
Next, and then will pop up to install jre, the path is jre1.8.0_171
Next, wait for the installation to complete.
Third, configure the environment variables
Right My Computer -> Properties
Click on Advanced System Settings
Click Environment Variables
New system variable, the variable name: JAVA_HOME, variable value: D: \ java \ jdk1.8.0_171 (fill in here the installation path of your choice)
New system variable, the variable name: CLASSPATH, variable values:;.% JAVA_HOME% \ lib; note that the value of this variable dot notation in English begin, end with a semicolon.
Configure the system environment variable Path
Double-click Path -> New -> Add "% JAVA_HOME% \ bin and% JAVA_HOME% \ jre \ bin"
Or a case, the final add the following string:;% JAVA_HOME% \ bin;% JAVA_HOME% \ jre \ bin
Note that before the first semicolon.
determine
Fourth, the test is successful installation and configuration
Open the "Command Prompt" (Run as administrator), enter javac and java -version, the output appears as shown below, then jdk installed successfully.
