Java Installation:
During installation of java using rpm file I found issues many times. after that I found a better way to install java from sun site, using below steps I have installed java successfully many times without facing any issues, we can also install multiple version of java easily if required.
Downloading latest java Archive:
| # wget –-“http://download.orcale.com/otn-pub/java/jdk/8u101-b14/jdk-8u101-linux-x64.tar.gz”
# tar –xvzf jdk-8u101-linux-x64.tar.gz |
Install java with alternatives:
After extracting java archive file, we just need to set up use newer version of java using alternatives.
| cd /opt/jdk1.8.0_101/
# alternatives –install /usr/bin/java java /opt/jdk1.8.0_101/bin/java 2 # alternatives –config java
There are 3 programs which provide ‘java’. Selection Command ———————————————– * 1 /opt/jdk1.7.0_71/bin/java + 2 /opt/jdk1.8.0_45/bin/java 3 /opt/jdk1.8.0_91/bin/java 4 /opt/jdk1.8.0_101/bin/java
Enter to keep the current selection[+], or type selection number: 4
|
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 /app/jdk1.8.0_101/bin/jar 2 #alternatives –install /usr/bin/javac javac /app/jdk1.8.0_101/bin/javac 2 #alternatives –set jar /app/jdk1.8.0_101/bin/jar #alternatives –set javac /app/jdk1.8.0_101/bin/javac
|
Check Installed Java Version:
| # java -version
java version “1.8.0_101” Java(TM) SE Runtime Environment (build 1.8.0_101-b14) Java HotSpot(TM) 64-Bit Server VM (build 25.101-b14, mixed mode |
Configuring Environment Variables:
- Setup JAVA_HOME variable
| export JAVA_HOME=/app/jdk1.8.0_101 |
- Setup JRE_HOME Variable
| export JRE_HOME=/app/jdk1.8.0_101/jre |
- Setup PATH Variable
| export PATH=$PATH:/app/jdk1.8.0_101/bin:/app/jdk1.8.0_101/jre/bin |
Be the first to comment on "Java Installation"