"Linux" JDK installation and environment variable configuration

1. After logging in to Linux, switch directories to /usr/local

   Cd/user/local 

2. new Folder in /usr/local directory java to store jdk files

   mkdir Java

3. in folder Java download jdk file ( jdk network path can be replaced according to your own needs)

   First switch directory to Java

   cd java

   download online JDK

   wget--no-check-certificate--no-cookies--header "cookie:oraclelicense= Accept-securebackup-cookie "http://download.oracle.com /otn-pub/java/jdk/8u181-b13/96a7b8442fe848ef90c96a2fad6ed6d1/jdk-8u181-linux-x64.tar.gz

4. Unzip the JDK to the current directory

   Tar jdk-8u181-linux-x64.tar.gz

   Delete the package after decompression is complete

   RM jdk-8u181-linux-x64.tar.gz

5. To edit a configuration file, configure environment variables

   Vim/etc/profile

   Add to:

   Export java_home=/usr/local/jdk1.7.0_71

   Export classpath=.: $JAVA _home/lib/dt.jar: $JAVA _home/lib/tools.jar

   Export path= $JAVA _home/bin: $PATH

   Press ESC, enter : Wq, save and exit

6. Reload the system configuration file

   Source/etc/profile

7. check that the JDK is installed successfully

   java-version

   back to JDK version

   Javac    The JDK was installed successfully

"Linux" JDK installation and environment variable configuration