Installation problem on jdk1.7.0_11

Question

I am trying to install my ubuntu using the downloaded jdk1.7.0_11 and jre1.7.0_11,and i traced the questions from here and followed tat steps even it is not installing the java. In the terminal , I am getting an error like this

Selection    Path                               Priority   Status
------------------------------------------------------------
* 0            /usr/lib/jvm/jre1.7.0_11/bin/java   3         auto mode
  1            /usr/lib/jvm/jdk1.7.0_11/bin/java   1         manual mode
  2            /usr/lib/jvm/jre1.7.0_11/bin/java   3         manual mode


Press enter to keep the current choice[*], or type selection number: 0
update-alternatives: warning: forcing reinstallation of alternative /usr/lib/jvm/jre1.7.0_11/bin/java because link group java is broken.
update-alternatives: warning: not replacing /usr/bin/java with a link.

pls guide me to work it possible to install java

Thank you

Answer 1

As VRU said it is not an error, it is a selection. It appears when more than one version of a program is installed. In this case you can select which Java version is used to execute Java programs.

The top one is the presently selected. Below that all the options are listed. In this case you can choose between the JRE and the JDK. JRE is the Java Runtime Environment and is usually fine for running all Java programs. JDK is the Java Development Kit. It is mainly needed to compile Java programs. Some programming tools require to be run with the JDK instead of JRE. If you are not developing programs in Java, selecting the JRE is fine.

If you had Java 6 (or 5) installed alongside with Java 7, it would also appear in this list.

You can check the version using java --version. The selection can be changed later on with sudo update-java-alternatives. Try forcing this.

If it doesn't work reinstall the java packages. If you are not developing Java you could also remove the JDK entirely, making the selection obsolete.

Answer 2

In my system I have installed OpenJDK in offline mode and it went successful. I am sharing you the same. Before you start, remove all old files so that you don't get in to any confusion and start with any one i.e., either JDK or JRE.

Installation of OpenJDK on Ubuntu :

1) Download OpenJDK

2) Extract the tar file.(using any of the two steps)

      Right click on the .tar file and select Extract Here.

      or open Terminal and give the command tar –xzf <filename>

example:

           $ tar xzf jdk-7u7-linux-i586.tar.gz

3) Move the extracted file to the “/usr/lib/jvm/” folder: [Note: If you don’t find a jvm folder in /usr/lib/ path , create a jvm folder there: $ sudo mkdir –p /usr/lib/jvm/]

           $ sudo mv jdk1.7.0_07 /usr/lib/jvm/

4) Install in your system :

           $ sudo update-alternatives --install /usr/bin/javac javac /usr/lib/jvm/jdk1.7.0_07/bin/javac 1

5) That’s it. Test your Java :

           $ java -version 

Remember to replace the file name with the one you have downloaded.