Quick Guide To Install Sun Java JDK on Centos 6 / Ubuntu / OpenSUSE

Some times some application needs only Sun Java, It will refuse to work in other version (eg. OpenJDK).

CentOS, Debian/Ubuntu method

But by default OpenJDK based java was installed in my system.

[[email protected] sandbox]# java -version
java version “1.6.0_17″
OpenJDK Runtime Environment (IcedTea6 1.7.9) (rhel-1.36.b17.el6_0-x86_64)
OpenJDK 64-Bit Server VM (build 14.0-b16, mixed mode)

 

Step 1: Download JDK from http://www.oracle.com/technetwork/java/javase/downloads/index.html. I got JDK version 7 in rpm format.

[email protected] $ ls *.rpm
jdk-7-linux-x64.rpm

Step 2: Install the RPM.

[[email protected] sandbox]# rpm -i jdk-7-linux-x64.rpm
Unpacking JAR files…
rt.jar…
jsse.jar…
charsets.jar…
tools.jar…
localedata.jar…

By default Java will be installed to /usr/java/jdk1.7.0/

Step 3:  Add this new java to the alternatives configuration & Update the java alternatives

[[email protected] sandbox]# alternatives – –install /usr/bin/java java /usr/java/jdk1.7.0/bin/java 2
[[email protected] sandbox]# alternatives – –config java

There are 3 programs which provide ‘java’.

Selection Command
———————————————–
*+ 1 /usr/lib/jvm/jre-1.6.0-openjdk.x86_64/bin/java
2 /usr/lib/jvm/jre-1.5.0-gcj/bin/java
3 /usr/java/jdk1.7.0/bin/java

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

Step 4: Now verify the java version

[[email protected] sandbox]# java -version
java version “1.7.0″
Java(TM) SE Runtime Environment (build 1.7.0-b147)
Java HotSpot(TM) 64-Bit Server VM (build 21.0-b17, mixed mode)

OpenSUSE way is here

# rpm -i jdk-7-linux-i586.rpm
Unpacking JAR files…
rt.jar…
jsse.jar…
charsets.jar…
tools.jar…
localedata.jar…
plugin.jar…
javaws.jar…
deploy.jar…

# update-alternatives – –install /usr/bin/java java /usr/java/jdk1.7.0/bin/java 2
# update-alternatives – –config java

There are 3 alternatives which provide `java’.
Selection    Alternative
———————————————–
*+        1    /usr/lib/jvm/jre-1.6.0-openjdk/bin/java
2    /usr/lib/jvm/jre-1.5.0-gcj/bin/java
3    /usr/java/jdk1.7.0/bin/java
Press enter to keep the default[*], or type selection number: 3
Using ‘/usr/java/jdk1.7.0/bin/java’ to provide ‘java’.
# java -version
java version “1.7.0″

Congrats! you have made it.



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