Centos7 configure jdk1.8 environment variables

1. Oracle download linux version jdk

https://www.oracle.com/cn/java/technologies/javase/javase-jdk8-downloads.html

2. Upload to linux server

1. Use the tool mobaxterm to upload jdk
   
   https://mobaxterm.mobatek.net/download.html
   

3. Unzip

tar -zxvf jdk-8u261-linux-x64.tar.gz

4. Edit environment variables

1. Open the environment variable file in linux

vi /etc/profile

2. Press i to edit vim
   
3. Set environment variables

export JAVA_HOME=/home/java_environment/jdk/jdk8
export CLASSPATH=.:$JAVA_HOME/jre/lib/rt.jar:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar
export PATH=$PATH:$JAVA_HOME/bin

4. Refresh environment variables

source /etc/profile

Reference:

https://www.bilibili.com/video/BV1BE411s7ji?from=search&seid=16153919915209337513