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 8u25) or update on your system. Read instruction carefully for downloading java from Linux command line. To Install Java 8 in Ubuntu and LinuxMint read This Article.
Step 1: Download JAVA Archive
Download latest Java SE Development Kit 8 release from its official download page or use following commands to download from shell.
For 64Bit
# 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/8u25-b17/jdk-8u25-linux-x64.tar.gz" # tar xzf jdk-8u25-linux-x64.tar.gz
For 32Bit
# 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/8u25-b17/jdk-8u25-linux-i586.tar.gz" # tar jdk-8u25-linux-i586.tar.gz
Note: If Above wget command doesn’t not worked for you watch this screencast to download JDK from terminal.
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_25/ # alternatives --install /usr/bin/java java /opt/jdk1.8.0_25/bin/java 2 # alternatives --config java There are 3 programs which provide 'java'. SelectionCommand ----------------------------------------------- *1 /opt/jdk1.8.0/bin/java + 2 /opt/jdk1.7.0_55/bin/java 3 /opt/jdk1.8.0_25/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. We also recommend to setup javac and jar commands path using alternatives
# alternatives --install /usr/bin/jar jar /opt/jdk1.8.0_25/bin/jar 2 # alternatives --install /usr/bin/javac javac /opt/jdk1.8.0_25/bin/javac 2 # alternatives --set jar /opt/jdk1.8.0_25/bin/jar # alternatives --set javac /opt/jdk1.8.0_25/bin/javac
Step 3: Check Version of JAVA .
Check the installed version of java using following command.
# java -version java version "1.8.0_25" Java(TM) SE Runtime Environment (build 1.8.0_25-b17) Java HotSpot(TM) 64-Bit Server VM (build 25.25-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
# export JAVA_HOME=/opt/jdk1.8.0_25
# export JRE_HOME=/opt/jdk1.8.0_25/jre
# export PATH=$PATH:/opt/jdk1.8.0_25/bin:/opt/jdk1.8.0_25/jre/bin
- Setup JAVA_HOME Variable
- Setup JRE_HOME Variable
- Setup PATH Variable