drjava-users Mailing List for DrJava (Page 3)

Thank u Chris, the problem has been resolved. Since i ve upadated my JRE to
the newest version, Dr java can't recognize the tools.jar file. So I just
deleted my JRE and setuped an older version, everything seems fine now
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=0D=0Ajavaisyourfriend @ 2007-4-18 10:19:41 AM
"[Drjava-users] having a problem with Dr Java" <mid:100...@ta...bb=
le.com>

> thank u for replying, but I have already done this and the problem is sti=
ll
> there, I downloaded Drjava and ran it, then I go to "edit"> "preferences"
>>"resource location" and locate Tools.jar Location to C:\Program
> Files\Java\jdk1.5.0_04\lib\tools.jar. that's how I set up it, and I
> have already installed JDK 5.0 update 4 on my computer, as well as
> JRE 5.0 update 10. Are there anything wrong with my setup?

Are you running DrJava with JRE 1.5.0_04 as well? The compiler and JRE
need to be the same version.

--=20
Chris Warrington <ch...@ri...>


Today's Oxymoron: Pretty ugly

thank u for replying, but I have already done this and the problem is still
there, I downloaded Drjava and ran it, then I go to "edit"> "preferences"
>"resource location" and locate Tools.jar Location to C:\Program
Files\Java\jdk1.5.0_04\lib\tools.jar.
that's how I set up it, and I have already installed JDK 5.0 update 4 on my
computer, as well as JRE 5.0 update 10. Are there anything wrong with my
setup?
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javaisyourfriend @ 2007-4-17 8:33:41 PM
"[Drjava-users] having a problem with Dr Java" <mid:100...@ta...>

> Hi everybody, I m new to Java. I v just installed Dr Java on my
> computer, but i have problem compiling my files, everytime when i
> compile, it returns an error says:
> 1 error found:
> File: (no associated file) [line: (no source location)]
> Error: java.lang.NoSuchMethodError:
> com.sun.tools.javac.util.Options.put(Ljava/lang/String;Ljava/lang/String;)V

We have seen this error with users who have installed JDK 6.0. Setting
the tools.jar path should solve this problem.

Select "Edit -> Preferences..." and click on the "..." to the right of
the "tool.jar" field. This will display a file selection dialog.

Now that the selection dialog is open, navigate through your file
system and select your "tools.jar". On Windows, it can often be found
in "C:\Program Files\Java\<jdk version>\lib\tools.jar". If you cannot
find it here, search for "tools.jar" across all your hard drives. On
Linux\Unix and Mac OS X, typing "locate tools.jar" at a command line
can help you locate it.

-- 
Chris Warrington <ch...@ri...>


In an office: WOULD THE PERSON WHO TOOK THE STEP LADDER YESTERDAY
PLEASE BRING IT BACK OR FURTHER STEPS WILL BE TAKEN

Hi everybody, I m new to Java. I v just installed Dr Java on my computer, but
i have problem compiling my files, everytime when i compile, it returns an
error says:
1 error found:
File: (no associated file) [line: (no source location)]
Error: java.lang.NoSuchMethodError:
com.sun.tools.javac.util.Options.put(Ljava/lang/String;Ljava/lang/String;)V

can anyone help me?
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I think its useful in the interpreter context to be able to redefine
methods on the fly.  That way a student can try one definition for a
function, find problems, redefine it to correct the problems, etc.

Most every other interpreted language I've ever used (Scheme, Lisp,
Python) allow function redefinition.

--brendan

On 3/17/07, R. Matt Barnett <rmb...@gm...> wrote:
> I would think the second definition would be disallowed due to matching
> signatures at the time it was interpreted.  Why wait for invocation?
>
> -- Matt
>
>
> On 3/17/07, Brendan Burns <bre...@gm...> wrote:
> >
> > Hey Folks,
> > I was playing with DrJava and I ran into a feature?/bug? which has me
> confused:
> >
> > in the interactions pane:
> > Welcome to DrJava.  Working directory is /home/bburns
> > > int plus(int a, int b) { return a + b; }
> > > plus(1,2)
> > 3
> > > int plus(int a, int b) { return a-b; }
> > > plus(1,2)
> > AmbiguousFunctionException: Both functions match:
> > (koala.dynamicjava.tree.MethodDeclaration:
> > ....
> >
> > In every other interpreter I've ever played around with, the second
> > definition of the plus function would overwrite the old definition.
> > So my question is:  what is going on? Is it intentional? Is there some
> > sort of weird namespace that I'm unaware of?
> >
> > Thanks
> > --brendan burns
> >
> >
> -------------------------------------------------------------------------
> > Take Surveys. Earn Cash. Influence the Future of IT
> > Join SourceForge.net's Techsay panel and you'll get the chance to share
> your
> > opinions on IT & business topics through brief surveys-and earn cash
> >
> http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV
> > _______________________________________________
> > Drjava-users mailing list
> > Drj...@li...
> > https://lists.sourceforge.net/lists/listinfo/drjava-users
> >
>
>

I would think the second definition would be disallowed due to matching
signatures at the time it was interpreted.  Why wait for invocation?

-- Matt

On 3/17/07, Brendan Burns <bre...@gm...> wrote:
>
> Hey Folks,
> I was playing with DrJava and I ran into a feature?/bug? which has me
> confused:
>
> in the interactions pane:
> Welcome to DrJava.  Working directory is /home/bburns
> > int plus(int a, int b) { return a + b; }
> > plus(1,2)
> 3
> > int plus(int a, int b) { return a-b; }
> > plus(1,2)
> AmbiguousFunctionException: Both functions match:
> (koala.dynamicjava.tree.MethodDeclaration:
> ....
>
> In every other interpreter I've ever played around with, the second
> definition of the plus function would overwrite the old definition.
> So my question is:  what is going on? Is it intentional? Is there some
> sort of weird namespace that I'm unaware of?
>
> Thanks
> --brendan burns
>
> -------------------------------------------------------------------------
> Take Surveys. Earn Cash. Influence the Future of IT
> Join SourceForge.net's Techsay panel and you'll get the chance to share
> your
> opinions on IT & business topics through brief surveys-and earn cash
> http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV
> _______________________________________________
> Drjava-users mailing list
> Drj...@li...
> https://lists.sourceforge.net/lists/listinfo/drjava-users
>

Hey Folks,
I was playing with DrJava and I ran into a feature?/bug? which has me confused:

in the interactions pane:
Welcome to DrJava.  Working directory is /home/bburns
> int plus(int a, int b) { return a + b; }
> plus(1,2)
3
> int plus(int a, int b) { return a-b; }
> plus(1,2)
AmbiguousFunctionException: Both functions match:
(koala.dynamicjava.tree.MethodDeclaration:
....

In every other interpreter I've ever played around with, the second
definition of the plus function would overwrite the old definition.
So my question is:  what is going on? Is it intentional? Is there some
sort of weird namespace that I'm unaware of?

Thanks
--brendan burns

Put the junit.jar anywhere you like.  Then, in DrJava, use:
   Edit -> Preferences -> Extra Classpath -> Add button
to add the path to the junit.jar file to the classpath.

Geoffrey
--
Geoffrey S. Knauth | http://knauth.org/gsk


On Feb 14, 2007, at 13:57, Dave McPherson wrote:

> Hi,
>
> I have student who is using DrJava and when he creates a Junit test
> case, the compiler can't find the framework.  If he downloads the  
> Junit
> jar from them, where should he put it on his computer or how does he
> tell DrJava where it is located?
>
> Thanks,
> Dave McPherson
> -- 
>   Dave McPherson	Computer Science
> Instructor	Virginia Tech
> dmc...@vt...	625 McBryde Hall
> 231-4485
> http://www.active.com/donate/tntva/tntvavtdave

Hi,

I have student who is using DrJava and when he creates a Junit test 
case, the compiler can't find the framework.  If he downloads the Junit 
jar from them, where should he put it on his computer or how does he 
tell DrJava where it is located?

Thanks,
Dave McPherson
-- 
  Dave McPherson	Computer Science
Instructor	Virginia Tech
dmc...@vt...	625 McBryde Hall
231-4485
http://www.active.com/donate/tntva/tntvavtdave

Consider:

public class Foo
{
  public static void main(String[] args)
  {
    System.out.println("arg 0 = " + args[0]);
  }
}

>From the interactions pane:

Welcome to DrJava.  Working directory is C:\Documents and
Settings\Matt.FT8D\Desktop
> java Foo "Bar"
arg 0 = Bar
>

Hope that helps,
Matt


On 2/8/07, Steve Shum <sh...@au...> wrote:
>
>  Hi,
>
> How do I enter command line arguments using DrJava?
>
> Thanks.
>
> steve
>
> -------------------------------------------------------------------------
> Using Tomcat but need to do more? Need to support web services, security?
> Get stuff done quickly with pre-integrated technology to make your job
> easier.
> Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo
> http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642
> _______________________________________________
> Drjava-users mailing list
> Drj...@li...
> https://lists.sourceforge.net/lists/listinfo/drjava-users
>
>

Hi,
 
How do I enter command line arguments using DrJava?
 
Thanks.
 
steve

A new DrJava stable release has been posted.  Go to <http://=20
drjava.org> for details.

=97Dan

Hi--
   I know that at one point (many years ago), it was possible to launch 
the DrJava Interactions pane on its own like this:

java -cp drjava.jar edu.rice.cs.drjava.ui.SimpleInteractionsWindow

   The interactions pane has changed a bit since then, though, so I 
don't know if that still works.  Perhaps the developers can test it out 
(and maybe improve the interface a bit), if it's a useful tool for people.

Hope that helps,
Charlie


Eddie Hillenbrand wrote:
> Hi,
> 
> My name is Eddie Hillenbrand, I'm a student at Northern Arizona
> University. I have been looking for an interactive Java interpreter.
> My search lead me to DynamicJava, but it didn't behave  like other
> interactive interpreters I've used in the past, namely Python and irb
> (interactive Ruby).
> 
> Then I found DrJava.  The Interactions pane behaves just the way I
> want.  So I got a hold of the DrJava source code. Then I compiled
> DynamicJava, but when I ran the jar it was the same as standard
> DynamicJava.  My question is, how do I get DynamicJava to behave like
> it does in DrJava?
> 
> Thanks in advance,
> 
> Eddie
> 
> -------------------------------------------------------------------------
> Take Surveys. Earn Cash. Influence the Future of IT
> Join SourceForge.net's Techsay panel and you'll get the chance to share your
> opinions on IT & business topics through brief surveys - and earn cash
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> _______________________________________________
> Drjava-users mailing list
> Drj...@li...
> https://lists.sourceforge.net/lists/listinfo/drjava-users

Hi,

My name is Eddie Hillenbrand, I'm a student at Northern Arizona
University. I have been looking for an interactive Java interpreter.
My search lead me to DynamicJava, but it didn't behave  like other
interactive interpreters I've used in the past, namely Python and irb
(interactive Ruby).

Then I found DrJava.  The Interactions pane behaves just the way I
want.  So I got a hold of the DrJava source code. Then I compiled
DynamicJava, but when I ran the jar it was the same as standard
DynamicJava.  My question is, how do I get DynamicJava to behave like
it does in DrJava?

Thanks in advance,

Eddie

A build of the DrJava Eclipse Plug-in has been posted, and is  
available on the main DrJava site.  The Eclipse Plug-in includes an  
Interactions Pane and a DrJava "Perspective."

<http://drjava.org>

A third update has now been released.  This also addresses a handful =20
of bugs.

=97Dan Smith


On Sep 18, 2006, at 1:40 PM, Daniel Smith wrote:

> A second update has been posted, with additional bug fixes.
>
> =97Dan
>
>
>
> On Aug 21, 2006, at 11:37 AM, Daniel Smith wrote:
>
>> An update to this release has now been posted, containing a few =20
>> bug fixes.
>>
>> <http://drjava.org> is back up and running.
>>
>> =97Dan Smith
>>
>>
>> On Aug 15, 2006, at 11:07 AM, Daniel Smith wrote:
>>
>>> A new version of DrJava with major improvements developed since =20
>>> January has been released.  See <http://drjava.sourceforge.net> =20
>>> for details.  (Note that the drjava.org site is temporarily =20
>>> unavailable, but will be back online soon.)
>>>
>>> =97Dan Smith
>>>
>>

I'm running DrJava version 20060918-1737 with Sun's JDK version 1.5.0_08
on a Windows XP system.  I've used JUnit test cases before without
problems, but not since last spring.

=20

Currently, I can't get any of my test cases to compile.  If I create a
brand new JUnit Test Case using the "New JUnit Test Case" command on the
File Menu, and then try to compile it, I get the error:

=20

Error: package junit.framework does not exist

=20

If I go to www.junit.org <http://www.junit.org/>  and download
junit-4.1.jar and add it to my classpath, then I can compile test cases
just fine.  But I'm sure that that didn't used to be necessary - that
the required libraries were included in DrJava.  Did something change?
Am I doing something wrong?

=20

Any help would be appreciated.

=20

Andrew Merrill

Computer Science Teacher

Catlin Gabel School, Portland, Oregon

mer...@ca...

A second update has been posted, with additional bug fixes.

=97Dan



On Aug 21, 2006, at 11:37 AM, Daniel Smith wrote:

> An update to this release has now been posted, containing a few bug =20=

> fixes.
>
> <http://drjava.org> is back up and running.
>
> =97Dan Smith
>
>
> On Aug 15, 2006, at 11:07 AM, Daniel Smith wrote:
>
>> A new version of DrJava with major improvements developed since =20
>> January has been released.  See <http://drjava.sourceforge.net> =20
>> for details.  (Note that the drjava.org site is temporarily =20
>> unavailable, but will be back online soon.)
>>
>> =97Dan Smith
>>
>

Hi,

My name is Mathias, I'm one of the developers of DrJava. I'm sorry if I
didn't reply in time, I didn't know this forum existed.


> We are looking to change the IDE that we use with our 1st year programming
> students. The IDE that we use must be compatible with our existing
> support-software that captures and extends the compiler errors with
> context sensitive messages.
> 
> A limitation of the current IDE that we use is that we can't include
> hyperlinks in the extended compiler messages when they're displayed in the
> normal compiler error window. Does anyone know if the DrJava compiler
> window allows hyperlinks to be displayed ?

DrJava can *display* hyperlinks in the compiler error window, provided they
ever came up, or in the interactions pane, e.g. as part of a runtime
exception. The latter, for example, could look like this:

> throw new RuntimeException("http://drjava.org");
RuntimeException: http://drjava.org
  at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
  at
sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
  at
sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
  at java.lang.reflect.Constructor.newInstance(Constructor.java:494)

What we currently do NOT to is let the user click on something that looks
like it might be a hyperlink ("https://" or "www.") to open a website. We
*could* do that, though, but it would be great to know exactly what you
want.

Please head over to our SourceForge DrJava project's page at

http://sourceforge.net/tracker/?group_id=44253&atid=438938

and submit a new feature request that shows the kinds of hyperlinks you want
to see, where they would come from, and what should happen when you click on
one.

Thank you for using DrJava.

--Mathias
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An update to this release has now been posted, containing a few bug =20
fixes.

<http://drjava.org> is back up and running.

=97Dan Smith


On Aug 15, 2006, at 11:07 AM, Daniel Smith wrote:

> A new version of DrJava with major improvements developed since =20
> January has been released.  See <http://drjava.sourceforge.net> for =20=

> details.  (Note that the drjava.org site is temporarily =20
> unavailable, but will be back online soon.)
>
> =97Dan Smith
>

A new version of DrJava with major improvements developed since =20
January has been released.  See <http://drjava.sourceforge.net> for =20
details.  (Note that the drjava.org site is temporarily unavailable, =20
but will be back online soon.)

=97Dan Smith

> We are looking to change the IDE that we use with our 1st year =
programming students. The IDE that we use must be compatible with our =
existing support-software that captures and extends the compiler errors =
with context sensitive messages.
>=20
> A limitation of the current IDE that we use is that we can't include =
hyperlinks in the extended compiler messages when they're displayed in =
the normal compiler error window. Does anyone know if the DrJava =
compiler window allows hyperlinks to be displayed ?
>=20
Thanks,

> Natalie Coull
> Research Assistant
> School of Computing & Creative Technologies
> University of Abertay Dundee
>=20

As a longtime user of DrScheme, I was interested to learn (again I  
think) of DrJava.  	I would like to know more about the history of  
DrJava, particularly about its usefulness as a teaching tool.

Geoffrey
--
Geoffrey S. Knauth | http://knauth.org/gsk

A new beta version of DrJava has been released.  Please see <http://=20
www.drjava.org> for detals.

=97Dan Smith