Using java in FC1(with eclipse)-help needed

[Kaustubh Ghosh]

On Wednesday 17 March 2004 12:51 am, Matt Morgan wrote:
> On 03/16/2004 01:53 PM, Kaustubh Ghosh wrote:
> >I am quite novice towards java programming in linux.To start with I
> > installed j2re1.4.2_03 and also j2sdk1.4.2_04 in FC1(Both from
> > java.sin.com).Now peculiar problems arise.
> >When I type "java -version" it gives 1.3.1(
>
> That's a path issue. You must also have the older version of java
> installed, and it appears earlier (or exclusively) in your path. At a
> shell prompt, type
>
> which java
>




It gives:" /usr/bin/java".I then cut out the java file and ran the command 
again it gave:"/usr/java/j2sdk1.4.2_04/bin/java".I again replaced the java 
file and on again issueing the command it gave:"/usr/bin/java".






> and you'll see where that version is (it'll be the first one that comes
> up, if more than one comes up). You can also type
>
> echo $PATH
>
> to see what directories are in your path. You can easily add the
>





It showed:
"/usr/kerberos/sbin:/usr/kerberos/bin:/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/usr/X11R6/bin:/usr/java/j2sdk1.4.2_04/bin:.:/usr/java/j2sdk1.4.2_03/bin:/root/bin"
Now what can I do.






> /usr/java/j2sdk1.4.2_04/bin
>
> folder to your $PATH in your homedir/.bash_profile or in other ways, but
> you should also remove the older version of java so it doesn't get in
> the way.






java -version  gives:
"java version "1.3.1"
jdkgcj 0.2.3 (http://www.arklinux.org/projects/jdkgcj)
gcj (GCC) 3.3.2 20031022 (Red Hat Linux 3.3.2-1)
Copyright (C) 2003 Free Software Foundation, Inc."
It seems to be a part of the GCC.How can I remove it.Consider me a novice.





>
> >When I type "/usr/java/j2sdk1.4.2_04/bin/java -version" it gives 1.4.2_04.
> >Anyway  I  can compile any .java  file with javac.
> >But when I try to run it with java(any of the above) the gui would not
> >come.(Hello World executes perfectly with System.out.println as also other
> >non-gui programs).
> >
> >I also installed eclipse sdk.It created a directory "eclipse" under
> > /opt.When I cycled to the directory and typed "eclipse" I got messages
> >"
> >warning:cannot determine -os type
> >warning:cannot determine -ws type.
> >warning:cannot determine -arch type.
> >warning:cannot determine -showsplash type.
> >"
> >After a while it gives an error(in a gui):
> >"Error:Java (VM) had to be shut down:Exit Code=1
> >/usr/bin/java
> >-cp /opt/eclipse/startup.jar org.eclipse.core.launcher.Main
> >-os linux
> >-ws gtk
> >-arch x86
> >-showsplash /opt/eclipse/eclipse_showsplash 600
> >"
> >
> >Cannot make any head or tail of it.
> >I also tried to install Netbeans developer using "nbdx2_21.class" file by
> >giving command "java nbdx2_21".What I got was:
> >"Exception in thread "main" java.lang.NoClassDefFoundError: nbdx2_21"
> >
> >Can I get any help?Thanks in advance.



What about eclipse and Netbeans.Can I get them to work anyway?Thanks.