Install Java 8 (JDK 8u5) on CentOS/RHEL 6/5 and Fedora

After a long wait, finally Java SE Development Kit 8 is available to download. JDK 8 has been released on Mar,18 2014 for general availability with the many featured enhancements. You can find all the enhancements in JDK 8 here.

 

This article will help you to Install JAVA 8 (JDK 8u5) or update on your system. Read instruction carefully for downloading java from Linux command line.

Step 1: Download JAVA Archive

Download latest Java SE Development Kit 8 release from its official download page.

# cd /opt/

# wget --no-cookies --no-check-certificate --header "Cookie: gpw_e24=http%3A%2F%2Fwww.oracle.com%2F; oraclelicense=accept-securebackup-cookie" "http://download.oracle.com/otn-pub/java/jdk/8u5-b13/jdk-8u5-linux-i586.tar.gz"

Note: If Above wget command doesn’t not worked for you watch this screencast to download JDK from terminal.
Now extract downloaded archive file

# tar xzf jdk-8u5-linux-i586.tar.gz

Step 2: Install JAVA using Alternatives

After extracting archive file use alternatives command to install it. alternatives command is available in chkconfig package.

# cd /opt/jdk1.8.0_05/

# alternatives --install /usr/bin/java java /opt/jdk1.8.0_05/bin/java 2

# alternatives --config java

There are 3 programs which provide 'java'.

  Selection    Command

-----------------------------------------------

*  1           /opt/jdk1.8.0/bin/java

 + 2           /opt/jdk1.7.0_55/bin/java

   3           /opt/jdk1.8.0_05/bin/java

Enter to keep the current selection[+], or type selection number: 3

At this point JAVA 8 has been successfully installed on your system.

Step 3: Check Version of JAVA .

Check the installed version of java using following command.

# java -version 

java version "1.8.0_05"

Java(TM) SE Runtime Environment (build 1.8.0_05-b13)

Java HotSpot(TM) Client VM (build 25.5-b02, mixed mode)

Step 4: Setup Environment Variables

Most of java based application’s uses environment variables to work. Set the java environment variables using following commands

• Setup JAVA_HOME Variable

# export JAVA_HOME=/opt/jdk1.8.0_05

• Setup JRE_HOME Variable

# export JRE_HOME=/opt/jdk1.8.0_05/jre

• Setup PATH Variable

# export PATH=$PATH:/opt/jdk1.8.0_05/bin:/opt/jdk1.8.0_05/jre/bin