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Re: [Java] Development Kit Issues



The fedora solved project talks about how to make the JRE the default run time environment... I already did that, by replacing the link for the java command in gcj by a link to the java command in the jdk folder...

However, that isn't my problem... my problem is that the JDK jar program, creates MANIFEST files usinf gcc... i don't know how the jar program does that, and i dont know which file is used to create MANIFEST files... i think it is an old link in the /usr/bin directory or some other old link that i have to replace from pointing at the gcc folder to the jdk folder...

Anyone know what files, libs or programs jar uses to create jar files?

On 27/03/06, Kazimieras Vaina < kazimieras vaina gmail com> wrote:
Hi,

There is also /usr/sbin/alternatives command to solve Sun jdk and gcj
conflicts.
At http://fedorasolved.org/browser-solutions/sun-java-installation
You may find some hints how to use the alternatives command.

On Sun, 2006-03-26 at 20:26 -0500, Dan wrote:
> Ali Helmy wrote:
> > Hey mate,
> >
> > Thanks for the information... i tried your suggestion about the
> > BufferedReader and it worked... however:
> >
> > Possibly there's still some gcj toolset stuff left. If you want to
> > solve this clean, check out the jpackage.org < http://jpackage.org/>
> > site and download the rpm building package. It allows you to create an
> > rpm file for the jdk which is compatible with "alternatives". This
> > way, you can switch the system JRE between gcj and the Sun JDK (and
> > others).
> >
> > umm, can you provide more detailed info?
> >
> > On 26/03/06, *Klaasjan Brand* < klaasjan gmail com
> > <mailto: klaasjan gmail com>> wrote:
> >
> >
> >
> >     On 3/26/06, *Ali Helmy* < alihelmy gmail com
> >     <mailto:alihelmy gmail com>> wrote:
> >
> >         Hey mates,
> >
> >         I need to inquire about two issues in particular regarding
> >         JDK... Firstly, so that you can understand my background:
> >
> >         - I'm running FedoraCore 5
> >         - In the FC installation, I installed the regular Java
> >         Development libs & tools (such as eclipse, gcj, ...etc)
> >         - I downloaded and installed the JDK1.5 and the JVM from Sun
> >         Microsystems, Inc.
> >         - I removed all the java related bins in the /usr/bin folder,
> >         then recreated the links to the new bins in the
> >         /usr/java/jdk1.4.0/bin library to make the javac, java, jar,
> >         javah... etc commands use the new JDK
> >
> >
> >         Now here's my problems:
> >
> >         A) When i create a jar file (ex: jar -cf Anyfile.jar
> >         Anyclass.class), the manifest file created with it
> >         (META-INF/MANIFEST) lists:
> >         Manifest-Version: 1.0
> >         Created-By: 0.92-gcc
> >         where you see, that my problem is that the manifest file was
> >         created by "gcc" apparently, and not 1.5.0_01 (Sun
> >         Microsystems Inc.) which should have been the case... so, how
> >         can i change the manifest file maker?
> >
> >
> >     Possibly there's still some gcj toolset stuff left. If you want to
> >     solve this clean, check out the jpackage.org <http://jpackage.org>
> >     site and download the rpm building package. It allows you to
> >     create an rpm file for the jdk which is compatible with
> >     "alternatives". This way, you can switch the system JRE between
> >     gcj and the Sun JDK (and others).
> >
> >
> >         And the Note I Get after compiling with (javac
> >         -Xlint:deprecation ...etc):
> >         [ahelmy Laptop Java]$ javac -Xlint:deprecation
> >         ReadingFromConsole.java
> >         ReadingFromConsole.java:12: warning: [deprecation] readLine()
> >         in java.io.DataInputStream has been deprecated
> >                                 UsrInput = IStream.readLine();
> >
> >         So, does anyone know a replacement to read directly a line of
> >         user input from the ( System.in <http://System.in>) through a
> >         console? Because .readline( ) was the one listed in the API
> >
> >
> >     It's in the API documentation:
> >     http://java.sun.com/j2se/1.4.2/docs/api/java/io/DataInputStream.html#readLine()
> >     <http://java.sun.com/j2se/1.4.2/docs/api/java/io/DataInputStream.html#readLine%28%29>
> >
> >     Wrap the InputStream in a BufferedReader and you'll get rid of the
> >     deprecation (and gain compatibility with different character sets).
> >
> >     Klaasjan
> >
> >
> >     --
> >     fedora-list mailing list
> >     fedora-list redhat com <mailto:fedora-list redhat com >
> >     To unsubscribe: https://www.redhat.com/mailman/listinfo/fedora-list
> >
> >
> >
> >
> > --
> > A. Helmy
> Check out the first and second replies of this post:
> http://www.fedorasolved.com/viewtopic.php?t=120
> It's for FC4, but the same thing works for FC5.
> -Dan
>

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