Re: IDE's

1999-12-02 Thread Oliver Fels

> The company I work for has asked me to evaluate IDE's for Java,
> and I would like to include those that run under Linux.  For the
[snip]
> The no-brainers that made the list right away are Visual Age,
> JBuilder, and NetBeans, because they all run (or will soon) on
> Linux.  Can anybody give opinions or sources of info that will
> help us with this decision?  What I want to prepare is a feature-
> for-feature comparison.

This morning, I occasionally came accross another interesting IDE 
mede by Omnicore named CodeGuide 2.0

It is not a tool for developing hight quality GUI applications as it 
does not contain a GUI builder.
It seems to be my IDE of choice as it holds a project manager, 
class browser editor and debugger with a few nice addons, like 
keyword completion in addition to those standard features (syntax 
highlighting, etc.).

I have taken a look at a whole lot of different IDEs as I tried to find 
one which is not heavy bloated and supports my coding, instead of 
delivering a big GUI builder with thousands of wizards as primary 
feature.
My needs consist of a good editor, a class browser, file/project 
management and a debugger - this tool seems to have exactly all 
of this.

And better: It comes as a Linux tgz file with jre 1.1.7 included, 
though it supports development of 1.2 applications and applets.

My suggestion: Run it with the supplied 1.1.7 jre ( a shell script is 
included) but setup the 1.2 JDK as development environment.

It is available via http://www.omnicore.com

Oliver
IQENA GmbH| Oliver Fels
Ehlersstrasse 15  | Dept. Costumer Solutions
88046 Friedrichshafen | Team manager IT-/JAVA-Security
http://www.iqena.com  | mailto: [EMAIL PROTECTED]
T +49. 07541 3012-808  F +49. 07541. 3012-881


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Re: IDE's

1999-12-02 Thread Greg Tomalesky

Hi Paolo:

That Solaris edition must be way newer than the demo CD I have:

jBuilder
Enterprise
Version 3.00

Build 003.000.273.000.English
09d/05m/1999 03:00:12

I was able to set the tab labels via the "constraint" parameter of an
embedded jPanel. I still can't see where to set the icon of the tab or of
any buttons. The model parameter for the jTable shows as  when I
select it and complains when I complete the selection. So based on this
version/build of the demo my original concerns are mostly intact.

Greg

- Original Message -
From: Paolo Ciccone <[EMAIL PROTECTED]>
To: Greg Tomalesky <[EMAIL PROTECTED]>
Cc: Java-Linux <[EMAIL PROTECTED]>
Sent: Wednesday, December 01, 1999 3:48 PM
Subject: Re: IDE's


> On Wed, Dec 01, 1999 at 04:25:47PM -0600, Greg Tomalesky wrote:
> > Hi:
> >
> > JBuilder3 is ok. I has some serious(IMHO) shortcomings. I will
> > enumerate:
>
> I'll use the Solaris edition, just released, to answer to this. The Linux
> version, under development and demoed at the last LWCE, uses the same code
> since JBuilder is now 100% Java.
>
> > 1. No GUI way to define JTable data model or other JTable helper
classes
> > such as TableHeader or ColumnModel
>
> All these properties are accessible from the property list in the Visual
> Designer together with many others.
>
> > 2. No GUI way to modify tab labels in a JTabbedPane.
>
> This is available, just type the label in the related property in the
> designer.
>
> > 3. No GUI way to add icons to buttons etc.
>
> Again this is accessible from the designer.
>
> I hope this addresses the problems you mentioned if there is any
suggestion
> about JBuilder or other Borland products please send us feedback, we have
> set up a community website just for this, see http://community.borland.com
> or http://www.borland.com
>
> Regards,
>
> --
> Paolo Ciccone
> JBuilder dev. team
>
>


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RMi deaths

1999-12-02 Thread jbaker

Has anyone ever come across this exception:

System Error:java.rmi.NoSuchObjectException: no such object in table
System Error:at 
sun.rmi.transport.StreamRemoteCall.exceptionReceivedFromServer(StreamRemoteCall.java:249)
System Error:at 
sun.rmi.transport.StreamRemoteCall.executeCall(StreamRemoteCall.java:224)
System Error:at sun.rmi.server.UnicastRef.invoke(UnicastRef.java:126)
System Error:at 
com.teamenergy.secure.permissionsserver.GamekeeperRemoteServer_Stub.getActivityPermissions(UnknownSource)

I have a small RMI Server which happily runs on a Jdk1.2.2rc2 under Linux.
It works fine, but after a while the client gives the above error when it
tries to connect. If I just restart the server, it works again.

Any ideas?

-- 
John Baker, BSc CS.   
Java developer and Linux lover:-)
Sms: [EMAIL PROTECTED]


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Re: R:Re: IDE's

1999-12-02 Thread Paolo Ciccone


> 1) It's a seriously heavy program; it needs around 128 - 256 MB ram for the 
> IDE to run smoothly.
> 2) It's still quite unstable (version 2 was hopeless), unless you keep 
> strictly to the non-Visual parts of the IDE.

When we switched to 10% Java code we actually reduced the memory footprint.
The past three versions had to deal with the Delphi runtime environment and
the JVM loaded plus some overhead because of the communication of things
like the editor buffer between the IDE (Delphi) and the Designer (Java).
The Solaris, and Linux, edition don't have this problems since we only use a
JVM. It's still a big program, we address a lot of development needs, but
it's much more usable and stable. 

> using it as a straight editing IDE, though, I've found it to be excellent. :)

Thanks, I believe you'll like the new version a lot more.

-- 
Paolo


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Re: IDE's

1999-12-02 Thread Paolo Ciccone

On Thu, Dec 02, 1999 at 08:56:07AM -0600, Greg Tomalesky wrote:
> Hi Paolo:
> 
> That Solaris edition must be way newer than the demo CD I have:

Yes it is, we actually officially announced it few days ago. PrimeTime, the
code name for the Solaris edition, is a new codebase for JBuilder. The first
three versions of JB had about 30% of Delphi code. With PrimeTime we
replaced all native code with Java and the result is highly multiplatform.
While PrimeTime has been released for Solaris the Linux version will follow
soon.

> I was able to set the tab labels via the "constraint" parameter of an
> embedded jPanel. I still can't see where to set the icon of the tab or of
> any buttons. The model parameter for the jTable shows as  when I
> select it and complains when I complete the selection. So based on this
> version/build of the demo my original concerns are mostly intact.

Yes they are, that's why I referred to the Solaris edition. Since this forum
is about Java and Linux the right reference point is PrimeTime, the version
that will be available on Linux, instead of the JBuilder for Windows. In
rewriting part of JBuilder we improved several things: designer, debugger,
OpenTools, editor (Emacs emulation).

Stay tuned, it's going to be exciting.

--Paolo


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Re: IDE's

1999-12-02 Thread Joseph Shraibman

Paolo Ciccone wrote:


The main problem I had with Jbuiler (enterprise 3 demo for windows) was that it
wouldn't let me specify a classpath to use in compiling so I could not compile my
program (that used the quicktime jsdk from apple).

Also the auto-indent didn't seem to work.


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Re: RMi deaths

1999-12-02 Thread Joseph Shraibman

[EMAIL PROTECTED] wrote:

> Has anyone ever come across this exception:
>
> System Error:java.rmi.NoSuchObjectException: no such object in table
> System Error:at 
>sun.rmi.transport.StreamRemoteCall.exceptionReceivedFromServer(StreamRemoteCall.java:249)
> System Error:at 
>sun.rmi.transport.StreamRemoteCall.executeCall(StreamRemoteCall.java:224)
> System Error:at sun.rmi.server.UnicastRef.invoke(UnicastRef.java:126)
> System Error:at 
>com.teamenergy.secure.permissionsserver.GamekeeperRemoteServer_Stub.getActivityPermissions(UnknownSource)
>
> I have a small RMI Server which happily runs on a Jdk1.2.2rc2 under Linux.
> It works fine, but after a while the client gives the above error when it
> tries to connect. If I just restart the server, it work



>From the javadoc:

ublic class NoSuchObjectException
extends RemoteException

A NoSuchObjectException is thrown if an attempt is made to invoke a method on an 
object that no longer exists in the remote
virtual machine. If a
NoSuchObjectException occurs attempting to invoke a method on a remote object, the 
call may be retransmitted and still
preserve RMI's "at most once" call semantics. A
NoSuchObjectException is also thrown by the method java.rmi.server.RemoteObject.toStub 
and by the unexportObject methods of
java.rmi.server.UnicastRemoteObject and java.rmi.activation.Activatable and



... so perhaps the distributed garbage collection is not working properly?  Trying 
putting a printline in your finalize
method so you know when your object is garbage collected.


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Re: R:Re: IDE's

1999-12-02 Thread Paolo Ciccone

On Thu, Dec 02, 1999 at 10:11:06AM -0800, Paolo Ciccone wrote:
> 
> When we switched to 10% Java code we actually reduced the memory footprint.

Of course this was "...100% java code..." :)

-- 
Paolo


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Re: RMi deaths

1999-12-02 Thread jbaker

Erm, yes I read those docs too. The thing is, my RMI objects arent being
killed off, and Im not doing anything fancy. It's so simple it might as well
be the HelloWorld example;) The Object on the server side just sits there
dishing out a "yes" or "no" to attempted logins.

On Thu, Dec 02, 1999 at 02:15:15PM -0500, Joseph Shraibman wrote:
> [EMAIL PROTECTED] wrote:
> 
> > Has anyone ever come across this exception:
> >
> > System Error:java.rmi.NoSuchObjectException: no such object in table
> > System Error:at 
>sun.rmi.transport.StreamRemoteCall.exceptionReceivedFromServer(StreamRemoteCall.java:249)
> > System Error:at 
>sun.rmi.transport.StreamRemoteCall.executeCall(StreamRemoteCall.java:224)
> > System Error:at sun.rmi.server.UnicastRef.invoke(UnicastRef.java:126)
> > System Error:at 
>com.teamenergy.secure.permissionsserver.GamekeeperRemoteServer_Stub.getActivityPermissions(UnknownSource)
> >
> > I have a small RMI Server which happily runs on a Jdk1.2.2rc2 under Linux.
> > It works fine, but after a while the client gives the above error when it
> > tries to connect. If I just restart the server, it work
> 
> 
> 
> >From the javadoc:
> 
> ublic class NoSuchObjectException
> extends RemoteException
> 
> A NoSuchObjectException is thrown if an attempt is made to invoke a method on an 
>object that no longer exists in the remote
> virtual machine. If a
> NoSuchObjectException occurs attempting to invoke a method on a remote object, the 
>call may be retransmitted and still
> preserve RMI's "at most once" call semantics. A
> NoSuchObjectException is also thrown by the method 
>java.rmi.server.RemoteObject.toStub and by the unexportObject methods of
> java.rmi.server.UnicastRemoteObject and java.rmi.activation.Activatable and
> 
> 
> 
> ... so perhaps the distributed garbage collection is not working properly?  Trying 
>putting a printline in your finalize
> method so you know when your object is garbage collected.

-- 
John Baker, BSc CS.   
Java developer and Linux lover:-)
Sms: [EMAIL PROTECTED]


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Re: Upgrading glibc to 2.1.2 (help!)

1999-12-02 Thread John N. Alegre

Hmmm  Im on a RedHat 6.0 system and I just did a

rpm -Uvh ftp://ftp.at.somesite.somewhere/the/path/to/glibc-2.1.2-11.i386.rpm

and it worked fine the first time.  No conflicts, No Deps.

Now I do recall a lot of problems when I tried to do that back in 5.0 with
glibc-2.0.something but this one worked first time.  May be ill read that HOWTO
anyway.

john

On 01-Dec-99 Nathan Meyers wrote:
> Updating glibc is very tricky stuff, with many dependencies and
> opportunities to break the system midway through installation. The usual
> way to do it (at least in RedHat-land) is to update your distribution
> installation.
> 
> This document discusses how to do a glibc install:
> 
> http://www.linuxdoc.org/HOWTO/Glibc2-HOWTO-1.html
> 
> it's targeted at upgrading from libc5, and the requirements might not
> be as elaborate if you're coming from glibc2.0.
> 
> Nathan
> 
> On Wed, Dec 01, 1999 at 11:15:59AM -0800, Colin D Bennett wrote:
>> I just installed JDK 1.2.2 on my Slackware 4.0 system, and I get a
>> strange error message when I try to run anything.
>> Here's what happens:
>> 
>> 
>> duke:/usr/local/bin/jdk1.2.2/bin# ./java
>> ./java: /bin/realpath: No such file or directory
>> ./java: /bin/realpath: No such file or directory
>> java was not found in /bin/i386/native_threads/java
>> 
>> 
>> It looks like I have glibc 2.0.7, so I'm downloading glibc 2.1.2 from
>> http://metalab.unc.edu/pub/gnu/glibc
>> 
>> I suppose I have to compile it myself, huh?
>> I currently have GCC 2.7.2.3 and Linux 2.2.6.
>> So, do I need a new GCC also?  What about G++?  What about the C++
>> libraries?  Do I need to upgrade them too?  How?
>> 
>> Sorry I'm so full of questions!  8-)
>> 
>> Thanks.
>> 
>> Colin
>> 
>> 
>> 
>> --
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> 
> 
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Date: 02-Dec-99
Time: 12:52:45

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Re: RMi deaths

1999-12-02 Thread Nathan Meyers

[EMAIL PROTECTED] wrote:
> 
> Has anyone ever come across this exception:
> 
> System Error:java.rmi.NoSuchObjectException: no such object in table
> System Error:at 
>sun.rmi.transport.StreamRemoteCall.exceptionReceivedFromServer(StreamRemoteCall.java:249)
> System Error:at 
>sun.rmi.transport.StreamRemoteCall.executeCall(StreamRemoteCall.java:224)
> System Error:at sun.rmi.server.UnicastRef.invoke(UnicastRef.java:126)
> System Error:at 
>com.teamenergy.secure.permissionsserver.GamekeeperRemoteServer_Stub.getActivityPermissions(UnknownSource)
> 
> I have a small RMI Server which happily runs on a Jdk1.2.2rc2 under Linux.
> It works fine, but after a while the client gives the above error when it
> tries to connect. If I just restart the server, it works again.

Is there any period of time during which there is no hard reference to
the GamekeeperRemoteServer object or a stub either in the server, a
registry, or any clients? If so, the object may have been
garbage-collected.

Nathan


> 
> Any ideas?
> 
> --
> John Baker, BSc CS.
> Java developer and Linux lover:-)
> Sms: [EMAIL PROTECTED]
> 
> --
> To UNSUBSCRIBE, email to [EMAIL PROTECTED]
> with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]


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Re: Upgrading glibc to 2.1.2 (help!)

1999-12-02 Thread Nathan Meyers

"John N. Alegre" wrote:
> 
> Hmmm  Im on a RedHat 6.0 system and I just did a
> 
> rpm -Uvh ftp://ftp.at.somesite.somewhere/the/path/to/glibc-2.1.2-11.i386.rpm
> 
> and it worked fine the first time.  No conflicts, No Deps.
> 
> Now I do recall a lot of problems when I tried to do that back in 5.0 with
> glibc-2.0.something but this one worked first time.  May be ill read that HOWTO
> anyway.

Cool... I won't argue with success. The conflicts and dependencies I
mentioned aren't necessarily the sort of things package management would
detect -- for example, application dependence on the (possibly buggy)
behavior of a particular library release. Please keep us informed if you
discover any post-update system weirdnesses.

Nathan


> 
> john
> 
> On 01-Dec-99 Nathan Meyers wrote:
> > Updating glibc is very tricky stuff, with many dependencies and
> > opportunities to break the system midway through installation. The usual
> > way to do it (at least in RedHat-land) is to update your distribution
> > installation.
> >
> > This document discusses how to do a glibc install:
> >
> > http://www.linuxdoc.org/HOWTO/Glibc2-HOWTO-1.html
> >
> > it's targeted at upgrading from libc5, and the requirements might not
> > be as elaborate if you're coming from glibc2.0.
> >
> > Nathan
> >
> > On Wed, Dec 01, 1999 at 11:15:59AM -0800, Colin D Bennett wrote:
> >> I just installed JDK 1.2.2 on my Slackware 4.0 system, and I get a
> >> strange error message when I try to run anything.
> >> Here's what happens:
> >>
> >> 
> >> duke:/usr/local/bin/jdk1.2.2/bin# ./java
> >> ./java: /bin/realpath: No such file or directory
> >> ./java: /bin/realpath: No such file or directory
> >> java was not found in /bin/i386/native_threads/java
> >> 
> >>
> >> It looks like I have glibc 2.0.7, so I'm downloading glibc 2.1.2 from
> >> http://metalab.unc.edu/pub/gnu/glibc
> >>
> >> I suppose I have to compile it myself, huh?
> >> I currently have GCC 2.7.2.3 and Linux 2.2.6.
> >> So, do I need a new GCC also?  What about G++?  What about the C++
> >> libraries?  Do I need to upgrade them too?  How?
> >>
> >> Sorry I'm so full of questions!  8-)
> >>
> >> Thanks.
> >>
> >> Colin
> >>
> >>
> >>
> >> --
> >> To UNSUBSCRIBE, email to [EMAIL PROTECTED]
> >> with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
> >
> >
> > --
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> 
> --
> E-Mail: John N. Alegre <[EMAIL PROTECTED]>
> Date: 02-Dec-99
> Time: 12:52:45
> 
> This message was sent by XFMail
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jdk-1.2.2-RC2-linux-i386-glibc-2.1.2.sh

1999-12-02 Thread Emmanuel Papirakis

Hello,

I am not sure if this is the right mailing list to
ask this question. But, I've downloaded this file 3
times si far (and the server apperes to be very
buisy).

For some reason, it won't execute. This is the output
message:


bash: ./jdk-1.2.2-RC2-linux-i386-glibc-2.1.2.sh: No
such file or directory

This is of course because, for some reason, bash
can't locate /bin/sh (even though it is there and
working with tons of other scripts).

Then, since I am already using bash, I just removed
the '!' after the '#'. 

./jdk-1.2.2-RC2-linux-i386-glibc-2.1.2.sh: syntax
error near unexpected token `i'
./jdk-1.2.2-RC2-linux-i386-glibc-2.1.2.sh:
./jdk-1.2.2-RC2-linux-i386-glibc-2.1.'.sh: line 167: `
   case $reply in

Which makes no sense either, because the syntax is
fine as I browse the script. So, after I decided to do
a:

tail +210 ./jdk-1.2.2-RC2-linux-i386-glibc-2.1.2.sh >
install

execute sum, verify the value (which is exact), chmod
the file and execute it. This is what I get:

BUG IN DYNAMIC LINKER ld.so: dynamic-link.h: 57:
elf_get_dynamic_info: Assertion `! "bad dynamic tag"'
failed!

This is of course getting more and more discouraging,
and the cherry on the sunday is when I tryed to ldd
the file, this is what I got:

BUG IN DYNAMIC LINKER ld.so: dynamic-link.h: 57:
elf_get_dynamic_info: Assertion `! "bad dynamic tag"'
failed!
ldd: /lib/ld-linux.so.2 exited with unknown exit code
(127)

So I was just woundering if there is a fix, or if I
could just get a good old .tar.gz or .tar.bz2 instead
of this package.

I have redhat-6.1 on an i586 (k6-II 450). Any help
would very appreciated...


Papi
__
Do You Yahoo!?
Thousands of Stores.  Millions of Products.  All in one place.
Yahoo! Shopping: http://shopping.yahoo.com


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Re: RMi deaths

1999-12-02 Thread jbaker


> > System Error:at 
>sun.rmi.transport.StreamRemoteCall.exceptionReceivedFromServer(StreamRemoteCall.java:249)
> > System Error:at 
>sun.rmi.transport.StreamRemoteCall.executeCall(StreamRemoteCall.java:224)
> > System Error:at sun.rmi.server.UnicastRef.invoke(UnicastRef.java:126)
> > System Error:at 
>com.teamenergy.secure.permissionsserver.GamekeeperRemoteServer_Stub.getActivityPermissions(UnknownSource)
> > 
> > I have a small RMI Server which happily runs on a Jdk1.2.2rc2 under Linux.
> > It works fine, but after a while the client gives the above error when it
> > tries to connect. If I just restart the server, it works again.
> 
> Is there any period of time during which there is no hard reference to
> the GamekeeperRemoteServer object or a stub either in the server, a
> registry, or any clients? If so, the object may have been
> garbage-collected.

No, the GamekeeperRemoteServer is a runnable class (ie it contains the main
method). It just sits there doing nothing in particular. Ie it creates an
instance of itself, and waits until the client connects. It only dies like
this after about 10 minutes of no use. After a client has used the server,
does it have to do somethign special to disconnect? 


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Re: RMi deaths

1999-12-02 Thread Nathan Meyers

[EMAIL PROTECTED] wrote:
> No, the GamekeeperRemoteServer is a runnable class (ie it contains the main
> method). It just sits there doing nothing in particular. Ie it creates an
> instance of itself, and waits until the client connects. It only dies like
> this after about 10 minutes of no use. After a client has used the server,
> does it have to do somethign special to disconnect?

The question is who is holding references to the Remote object. Do you
publish the server to a registry (with Naming.bind(), for example)? How
do clients get the RMI stub they need to call the server? If no running
Java app - local or remote - is holding any live, strong references to
the object, it has every right to go away. Having a main() method in the
class doesn't change this (unless you keep a reference to the object in
main() and make main() immortal).

Have you tried this in other environments? Is this definitely a
Linux-specific problem you're seeing?

Nathan


> 
> > > System Error:at 
>sun.rmi.transport.StreamRemoteCall.exceptionReceivedFromServer(StreamRemoteCall.java:249)
> > > System Error:at 
>sun.rmi.transport.StreamRemoteCall.executeCall(StreamRemoteCall.java:224)
> > > System Error:at sun.rmi.server.UnicastRef.invoke(UnicastRef.java:126)
> > > System Error:at 
>com.teamenergy.secure.permissionsserver.GamekeeperRemoteServer_Stub.getActivityPermissions(UnknownSource)
> > >
> > > I have a small RMI Server which happily runs on a Jdk1.2.2rc2 under Linux.
> > > It works fine, but after a while the client gives the above error when it
> > > tries to connect. If I just restart the server, it works again.
> >
> > Is there any period of time during which there is no hard reference to
> > the GamekeeperRemoteServer object or a stub either in the server, a
> > registry, or any clients? If so, the object may have been
> > garbage-collected.
> 
> No, the GamekeeperRemoteServer is a runnable class (ie it contains the main
> method). It just sits there doing nothing in particular. Ie it creates an
> instance of itself, and waits until the client connects. It only dies like
> this after about 10 minutes of no use. After a client has used the server,
> does it have to do somethign special to disconnect?


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Re: IDE's

1999-12-02 Thread Paolo Ciccone

On Thu, Dec 02, 1999 at 02:09:30PM -0500, Joseph Shraibman wrote:
> Paolo Ciccone wrote:
> 
> 
> The main problem I had with Jbuiler (enterprise 3 demo for windows) was that it
> wouldn't let me specify a classpath to use in compiling so I could not compile my
> program (that used the quicktime jsdk from apple).

Have you tried the "Required libraries" page in the project properties
?  This is used to add the java packages that you depend to. We
compile JBuilder with JBuilder and for sure it supports pointing to
other packages :).


-- 
Paolo Ciccone
JBuilder dev. team


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Re: font.properties

1999-12-02 Thread Jeff Bean

Hi John, folks,

I finally solved the Java-fonts-not-found-via-remote-XServer problem
using a combination of xlsfonts and sed to get a tailor-made
font.properties for my Xserver setup.

I figure the jdk will change again and the font.properties will change
again as well, so this will either pretty much always be a problem, or
sun will change their font implementation again and introduce different
annoyances.

I'm thinking of cobbling together an automatic configuration script that
will replace the fonts in font.properties with the most similar fonts
listed in the output of xlsfonts. Do you think this is worth doing, if
anyone else has already done something like this? It might even be worth
hacking up java to do this on the fly when it detects that it's being
run with a remote display.

--Jeff


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Re: font.properties

1999-12-02 Thread Emmanuel Papirakis

MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii


> I'm thinking of cobbling together an automatic
> configuration script that
> will replace the fonts in font.properties with the
> most similar fonts
> listed in the output of xlsfonts. Do you think this
> is worth doing, if
> anyone else has already done something like this? It
> might even be worth
> hacking up java to do this on the fly when it
> detects that it's being
> run with a remote display.


Hello,

I do not know if this has been done already. But, if
it hasn't, this would be very usefull.

Papi
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