Installing Java from Java.com (Solved)

[eddieg780]

I need to install the latest Java which is version 6 update 25. The version on my machine is 6 version 20. I have done the update from repos and it says up to date. How do I install the newset version so it works system wide? Thanks

[eddieg780]

Re: Installing Java from Java.com

Why do I get this error when trying to run a java program?

Caused by: java.lang.UnsatisfiedLinkError: Cannot load 64-bit SWT libraries on 32-bit JVM

[Snowhog]

Re: Installing Java from Java.com

Sounds like you downloaded and tried, or actually (don't know how) installed the 64-bit java, but you have a 32-bit system/version installed already??

[eddieg780]

Re: Installing Java from Java.com

I only install from repos so far. Does it mean I have 64 bit installed some how? Here is what I have... How do I know if 32 or 64 bit?

ed@ed-dell:~$ java -version
java version "1.6.0_20"
OpenJDK Runtime Environment (IcedTea6 1.9.7) (6b20-1.9.7-0ubuntu1)
OpenJDK Server VM (build 19.0-b09, mixed mode)
ed@ed-dell:~$

I want to install the latest version of Java but don't know how or where to install it to for system wide use like the version above.

[Telengard]

Re: Installing Java from Java.com

OpenJDK Runtime Environment (IcedTea6 1.9.7) (6b20-1.9.7-0ubuntu1)

This is the community build of Java. The one on Java.com is the official Oracle (formerly Sun) build. IcedTea should be very compatible but probably isn't 100%.

If you want Oracle (formerly Sun) Java then you have to install it and run sudo update-java-alternatives to select it as the default JRE.

I'm not sure any of this explains the problem you seem to be experiencing, but there you go.

[eddieg780]

Re: Installing Java from Java.com

Ok so how do I get rid of icedtea and use java? Will uninstalling it from synaptic work? What else would I have to do? Thank you.

[Telengard]

Re: Installing Java from Java.com

It should not be necessary to uninstall IcedTea.

If you want Oracle (formerly Sun) Java then you have to install it and run sudo update-java-alternatives to select it as the default JRE.

HTH

Edit

• Sun Java 6 installation instructions
• update-java-alternatives manpage, just in case you need it

[eddieg780]

Re: Installing Java from Java.com

I don't understand what I'm suppose to type in here...


ed@ed-dell:~$ sudo update-java-alternatives
usage: update-java-alternatives [--jre-headless] [--jre] [--plugin] [ -t|--test|-v|--verbose]
-l|--list [<jname>]
-s|--set <jname>
-a|--auto
-h|-?|--help

What is it asking me to do?

[Telengard]

Re: Installing Java from Java.com

You may not have to do anything with update-java-alternatives. One thing you could do which may prove informative though:

$ update-java-alternatives --list
java-6-sun 63 /usr/lib/jvm/java-6-sun

Edit
These articles should shed some light on this.

• http://www.mail-archive.com/debian-java@lists.debian.org/msg11148.html
• https://help.ubuntu.com/community/Java?action=show&redirect=JavaInstallation
• http://ubuntuforums.org/archive/index.php/t-366104.html

[ubuntuku]

Re: Installing Java from Java.com

I want to install the latest version of Java but don't know how or where to install it to for system wide use like the version above.

Install sun java:

sudo apt-get install sun-java6-plugin sun-java6-jre

and set all JRE alternatives to sun java:

sudo update-java-alternatives --jre -s java-6-sun

if you want to set it back to openjdk:

sudo update-java-alternatives --jre -s java-6-openjdk

BTW you may want to install kalternatives so you can easily configure the alternative systems.

sudo apt-get install kalternatives

[img width=400 height=258]http://i.imgur.com/s6QVp.jpg[/img]
[img width=400 height=278]http://i.imgur.com/VQczh.jpg[/img]

[Telengard]

Re: Installing Java from Java.com

Thanks, ubuntuku. I didn't know about kalternatives.

[eddieg780]

Re: Installing Java from Java.com

Thank you ubuntuku. This is exactly what I needed. I did understand how to use update-java-alternatives. Worked perfectly.

Ok Telengard and thank you too.

[Telengard]

Re: Installing Java from Java.com

Glad to know you got Sun Java working.

Caused by: java.lang.UnsatisfiedLinkError: Cannot load 64-bit SWT libraries on 32-bit JVM

If this problem has fixed, then please consider marking this thread solved by editing the subject of the OP.