Which version of Sun Java have I got?

[Scott Davies]

Hi,

I think your confusion is regarding the difference between the JDK and the
JRE.

The JDK (Java Development Kit) is the SDK.  By the looks of things, you
have JDK 1.6, revision or patch 20.

The JRE (Java Runtime Environment) is needed only for running Java code,
like in a client environment.  By the looks of things, you have JRE 6 with
revision or patch 24.

When you are developing and compiling code, the JDK will use javac version
1.6.20.

In this case, you'll want to update both.

Cheers,

Scott

On 11-03-08 4:11 PM, "Colin Law" <clanlaw at googlemail.com> wrote:

>In another thread it was pointed out that we should be using Sun Java
>6.24 rather than 20 as this had security issues.  When I type
>java -version
>I get
>java version "1.6.0_20"
>OpenJDK Runtime Environment (IcedTea6 1.9.7) (6b20-1.9.7-0ubuntu1)
>OpenJDK Client VM (build 19.0-b09, mixed mode, sharing)
>
>But when I do
>sudo apt-cache policy sun-java6-jre (or bin or jdk or whatever)
>I get
>sun-java6-jre:
>  Installed: 6.24-1build0.10.10.1
>  Candidate: 6.24-1build0.10.10.1
>  Version table:
> *** 6.24-1build0.10.10.1 0
>        500 http://archive.canonical.com/ubuntu/ maverick/partner i386
>Packages
>        100 /var/lib/dpkg/status
>
>I am not aware of having installed it other than from the repository.
>Can anyone help with my confusion?
>
>Colin
>
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