Installation and configuration of jdk15

jdk installation and configuration

1. Download jdk (I am jdk15, 2019/09/19)
   
   
   Click on the link to enter and slide to the bottom of the page, click on the
   
   
   tick to download
2. Install jdk
   
   
   change the storage location of jdk, and wait for the installation, after a while, the installation is complete
3. Configure jdk to
   
   open "This Computer", and find "This Computer" on the left side of the window, right click -> Properties
   
   on the left side of the window to find "Advanced System Settings" and click to enter
   
   Click "Environment Variables"
   
   
   (1) Add a variable JAVA_HOME to the system variables , The variable value is the path where you installed jdk
   
   ! [37](https://img-blog.csdnimg.cn/20200919192554860.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9FxmN0Z
   in the system Add %JAVA_HOME%\bin;%JAVA_HOME%\jre\bin to the Path of the variable

(3) Add the variable PATHCLASS in the system variables, the variable value is %JAVA_HOME%\bin;%JAVA_HOME%\lib\dt.jar;%JAVA_HOME%\lib\tools.jar

Then press "OK" for all the windows just opened

4. Check if the jdk is installed successfully

Win+R enters the dos window

as shown in the figure, it is successful!