Environment: install jdk 8 on the centos 7 operating system of Linux
1. Download
First go to the official website to download the compressed jdk file under Linux environment, the official website download address: http://www.oracle.com/technetwork/java/javase/downloads/index.html
I downloaded the jdk-8u151 version, and uploaded the downloaded jdk to Linux through tools such as xftp
2. Upload files
Upload files through ftp software, after uploading, my files are in /yunlian/source_soft/jdk-8u151-linux-x64.tar.gz
3. Decompression
Unzip the file using the command tar zxvf FileName.tar.gz
[root@xxx ~]# tar zxvf /yunlian/source_soft/jdk-8u151-linux-x64.tar.gz
Fourth, the environment variable configuration
After decompressing the file, you can configure the environment variables of java
Edit the /etc/profile file and add our java environment variable configuration information at the end of the file
[root@xxx ~]# vi /etc/profile
Press i to start editing the file and append the configuration content at the end of the file:
export JAVA_HOME=/yunlian/source_soft/jdk1.8.0_151
export PATH=$JAVA_HOME/bin:$PATH
After editing, press the Esc key to stop editing the file, and then continue to enter the command ":wq" to save and exit the editing mode
Execute the command [root@xxx ~]# source profile
This command can make the file just modified take effect immediately
Then, enter the commands java , javac , java -version respectively
If there is no command not found prompt message for the above three commands, it means the configuration is successful