ubuntu16.04 mounted java8

Environment: ubuntu16.04 vmware virtual machine environment

Jdk download from Oracle's official website, jdk-8u231-linux-x64.tar.gz

　　(1) to / opt the directory

sudo cp jdk-8u231-linux-x64.tar.gz /opt

　　Create a java directory (3) / opt directory, change the permissions for all current users

sudo  mkdir java
 sudo  chown Liko java    
 sudo  chgrp Liko java

　　(4) The installation extracted the java directory

tar -zxvf jdk-8u231-linux-x64.tar.gz -C /opt/java

　　(5) configure the environment variables
　　　　to modify / etc / profile file
　　　　and add the following information thereafter:

#set java environment
export JAVA_HOME=/opt/java/jdk1.8.0_231
export PATH=${JAVA_HOME}/bin:${PATH}

　　(6) the entry into force of java environment
　　　　to perform source / etc / profile at this time to perform echo $ JAVA_HOME can already see the path just set up

　　At this point the installation is complete, pleasant to javac, java -version it!