javajre version question on FC4

Max

Reconfiguring FC4's default Java configuration, this is done as root or equivalent.

First removevar-lib-alternatives-java file by typing;

rmvar-lib-alternatives-java

When asked press the 'y' key,

Now to create the new (corrected) alternatives file for java type the following commands as root (modify for jdk as needed);

usr-sbin-alternatives --installusr-bin-java javausr-lib-jvm-jre-1.4.2-gcj-bin-java 1

usr-sbin-alternatives --installusr-bin-java javausr-java-j2re1.5.006-bin-java 2

usr-sbin-alternatives --config java

You should now see for example:

There are 2 programs which provide 'java'.

Selection Command ----------------------------------------------- 1 usr-lib-jvm-jre-1.4.2-gcj-bin-java *+ 2 usr-java-j2re1.5.006-bin-java

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

In the example above java is already configured correctly *+ 2 to use Sun's Java, no changes are needed, just press the Enter key here. If you have been following the instructions then you should have the same results (version numbers may be sightly different).

Now type;usr-sbin-alternatives --display java

You should see for example;

java - status is manual. link currently points tousr-java-j2re1.5.006-bin-javausr-lib-jvm-jre-1.4.2-gcj-bin-java - priority 1usr-java-j2re1.5.006-bin-java - priority 2 Current `best' version isusr-java-j2re1.5.006-bin-java.

Next you might want to create (or edit)etc-profile.d-java.sh file, example below;

export JAVAHOME="-usr-java-jre1.5.006-bin" export JAVAPATH="$JAVAHOME"

When done creating or editing the file type;

sourceetc-profile.d-java.sh

Now any user root or other wise should be able to use the command;

which java

and the results should read something like;

usr-java-jre1.5.006-bin-java

Also any user root or other wize should be able to use the command;

java -version

and the results should read something like;

java version "1.5.006" Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.006-b05) Java HotSpot(TM) Client VM (build 1.5.006-b05, mixed mode, sharing)

That's it, all done.

-- "A personal computer is called a personal computer because it's yours, Anything that runs on that computer, you should have control over." Andrew Moss, Microsoft's senior director of technical policy, 2005