Linux download and install JDK

1. Download the jdk file of the Linux environment

Link: https://pan.baidu.com/s/179vl1NyhnunJn828eZe_iw 
Extraction code: 1234

All versions of JDK8: Java Archive Downloads - Java SE 8

2. Upload files to Linux

I am using Final Shell

3. Unzip tar -zxvf jdk1.8.0_171.tar.gz -C /usr/local/ Among them, we generally put the ones we installed in the /usr/local folder.

 tar -zxvf jdk1.8.0_171.tar.gz -C /usr/local/

4. Open the configuration file vim /etc/profile 

 vim /etc/profile 

5. Modify the configuration file

Press shift+g to quickly navigate to the end of the file, add

JAVA_HOME=/usr/local/jdk1.8.0_171
PATH=$JAVA_HOME/bin:$PATH

Where /usr/local/jdk1.8.0_171 is the path where we installed jdk, then save and exit

JAVA_HOME=/usr/local/jdk1.8.0_171
PATH=$JAVA_HOME/bin:$PATH

6. Reload the profile file to make the changed configuration file take effect immediately source /etc/profile

source /etc/profile

7. Check whether the installation is successful java -version

java -version

 8. The installation is complete