Install JDK installation on linux server

1. Prepare the jdk1.8 installation package

1.1. Upload the local linux version of the jdk1.8 installation package to the server through the connection tool

1.2. Move the jdk installation package to the specified location

1.3. Go to the /usr/local folder

2. Unzip the JDK installation package

3. Configure the JDK variable environment

3.1. Configure the subordinate environment variables in the /etc/profile file

export  JAVA_HOME=/usr/local/jdk1.8.0_121
export  CLASSPATH=$:CLASSPATH:$JAVA_HOME/lib/
export  PATH=$PATH:$JAVA_HOME/bin

3.2. Refresh the environment variable to make it take effect

3.3. Check whether the JDK is installed successfully