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Saturday 2 July 2016

How To Install Oracle Java on Ubuntu 14.04 Server

How To Install Oracle Java on Ubuntu Server

About JAVA :

-- Java is a programming language and computing platform first released by Sun Microsystems in 1995. There are lots of applications and websites that will not work unless you have Java installed, and more are created every day. Java is fast, secure, and reliable.

Step: 1. Update the System :

# apt-get update

Step: 2. Add Java Repository :

# add-apt-repository ppa:webupd8team/java

If asked press Enter

# apt-get update

Step: 3. Install Oracle JDK 7 or JDK 8:

# apt-get install oracle-java7-installer

or
# apt-get install oracle-java8-installer
 
Step: 4. Setting the "JAVA_HOME" environment variable :

To set the JAVA_HOME environment variable, which is needed for some programs, first find out the path of your Java installation:

# apt-get install oracle-java7-set-default

or
# apt-get install oracle-java8-set-default
 
#  vi /etc/environment

JAVA_HOME="/usr/lib/jvm/java-7-oracle/jre/bin/java"

or
JAVA_HOME="/usr/lib/jvm/java-8-oracle/jre/bin/java"
 
-- Save & Quit (:wq)

# source /etc/environment
# echo $JAVA_HOME

Step: 5. Check Java Version :

# java -version

java version "1.7.0_76"
Java(TM) SE Runtime Environment (build 1.7.0_76-b13)
Java HotSpot(TM) 64-Bit Server VM (build 24.76-b04, mixed mode)


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