Linux Ubuntu Installation JDK1.8

1 Download the official website jdk---. tar.gz file

2 Create a new folder and unzip the. tar.gz file that you just downloaded

My JDK wants to be installed under/usr/local, enter: sudo mkdir/usr/local/java

The location of my downloaded good file is ~/download input: cd ~/Download current folder extract: sudo tar-zxvf jdk--. tar.gz-c/usr/local/java

3 Setting environment variables

sudo gedit/etc/profile

Add environment variable content

#set Java Environment
Export java_home=/usr/lib/java/1.8.0_92
Export JRE_HOME=${JAVA_HOME}/JRE
Export Classpath=.:${java_home}/lib:${jre_home}/lib
Export Path=${java_home}/bin: $PATH

4 Setting the default JDK

sudo update-alternatives--install/usr/bin/java java/usr/local/java/1.8.0_92/bin/java 300
sudo update-alternatives--install/usr/bin/javac javac/usr/local/java/1.8.0_92/bin/javac 300

5 Testing

java-version

display JDK version is configured successfully

[Email protected]:/home/ubuntu/public# java-version
Java Version "1.8.0_92"
Java (TM) SE Runtime Environment (build 1.8.0_92)
Java HotSpot (TM) 64-bit Server VM (build 24.65-b04, Mixed mode)

Linux Ubuntu Installation JDK1.8