[gentoo-user] using eclipse with java

[gentoo-user] using eclipse with java

[gottlieb]

I am a CS prof at NYU, which uses Java for CS 101.  I have taught this
course a few times and have learned Java as a result.  During my
sabbatical year (a coincidence? :-) )the department decided to teach the
eclipse IDE.

I have never used an IDE so though i should try now instead of waiting
until september.

merging eclipse-ecj was painless and sure enough it does seem to compile
my programs.  It even noticed that I didn't close a scanner.
I can still use javac if desired.  Fine.

I have not yet merged eclipse-sdk.  Must I merge this?  The only version
in the main tree is masked and it brings in 83! packages.

Others in the dept (and students) praise the eclipse debugger.  I don't
see how I will be invoking it.  Also what about the eclipse editor?

I guess, I need to be pointed at the right documentation.  I went to
wiki.eclipse.org but am not sure where to go to from here.

thanks,
allan

Re: [gentoo-user] using eclipse with java

[Jc García]

2014-04-17 10:11 GMT-06:00  <gottlieb@nyu.edu>:
> I am a CS prof at NYU, which uses Java for CS 101.  I have taught this
> course a few times and have learned Java as a result.  During my
> sabbatical year (a coincidence? :-) )the department decided to teach the
> eclipse IDE.
>
> I have never used an IDE so though i should try now instead of waiting
> until september.
>
> merging eclipse-ecj was painless and sure enough it does seem to compile
> my programs.  It even noticed that I didn't close a scanner.
> I can still use javac if desired.  Fine.

I am a CS student, and use eclipse for java projects, and I can say it
has some nice things to work java.

>
> I have not yet merged eclipse-sdk.  Must I merge this?  The only version
> in the main tree is masked and it brings in 83! packages.
>

The portage version of eclipse is old, I personally prefer to use the
binary tarball from eclipse.org( It doesn't worth it for me having to
compile a large old thing)

> Others in the dept (and students) praise the eclipse debugger.  I don't
> see how I will be invoking it.  Also what about the eclipse editor?
>
Well I got used to vim before using java and eclipse, so its editor in
my opinion sucks(after you have used a real editor), but fortunately
there is eclim, which lets you use your favorite editor(vim or emacs)
to code, and have acces to the nice features of eclipse, so it was the
option for me when coding java. (None of eclim's versions work with
the portage in-tree eclipse version, so another reason to use the
binary tarball)

> I guess, I need to be pointed at the right documentation.  I went to
> wiki.eclipse.org but am not sure where to go to from here.
>
> thanks,
> allan
>
I don't really like IDEs nor java, and avoid it most of the time, so i
don't have much experience with it, but for a gentoo user who has been
around sometime, I would strongly recomend the combination
eclipse+eclim+your_editor, it would make you not hate the GUI, and get
the nice features.

Re: [gentoo-user] using eclipse with java

[gottlieb]

On Thu, Apr 17 2014, Jc García wrote:

> 2014-04-17 10:11 GMT-06:00  <gottlieb@nyu.edu>:
>> I am a CS prof at NYU, which uses Java for CS 101.  I have taught this
>> course a few times and have learned Java as a result.  During my
>> sabbatical year (a coincidence? :-) )the department decided to teach the
>> eclipse IDE.
>>
>> I have never used an IDE so though i should try now instead of waiting
>> until september.
>>
>> merging eclipse-ecj was painless and sure enough it does seem to compile
>> my programs.  It even noticed that I didn't close a scanner.
>> I can still use javac if desired.  Fine.
>
> I am a CS student, and use eclipse for java projects, and I can say it
> has some nice things to work java.
>
>>
>> I have not yet merged eclipse-sdk.  Must I merge this?  The only version
>> in the main tree is masked and it brings in 83! packages.
>>
>
> The portage version of eclipse is old, I personally prefer to use the
> binary tarball from eclipse.org( It doesn't worth it for me having to
> compile a large old thing)
>
>> Others in the dept (and students) praise the eclipse debugger.  I don't
>> see how I will be invoking it.  Also what about the eclipse editor?
>>
> Well I got used to vim before using java and eclipse, so its editor in
> my opinion sucks(after you have used a real editor), but fortunately
> there is eclim, which lets you use your favorite editor(vim or emacs)
> to code, and have acces to the nice features of eclipse, so it was the
> option for me when coding java. (None of eclim's versions work with
> the portage in-tree eclipse version, so another reason to use the
> binary tarball)
>
>> I guess, I need to be pointed at the right documentation.  I went to
>> wiki.eclipse.org but am not sure where to go to from here.
>>
>> thanks,
>> allan
>>
> I don't really like IDEs nor java, and avoid it most of the time, so i
> don't have much experience with it, but for a gentoo user who has been
> around sometime, I would strongly recomend the combination
> eclipse+eclim+your_editor, it would make you not hate the GUI, and get
> the nice features.

Thank you; that does seem preferable.  Is the binary you refer to the
one in the following message from emerge (I did a --pretend)?

# A more recent source build maintained by the community is available in the
# seden overlay. A more recent binary is available in the java-overlay.

thanks again,
allan

[gentoo-user] Re: using eclipse with java

[James]

 <gottlieb <at> nyu.edu> writes:

> 
> I am a CS prof at NYU, which uses Java for CS 101. 

Haven't been part of a U, since I was asked to leave; all my students
were making to much money consulting and did not want those tuition waivers
or TA paychecks..... Are things any better now ?


> wiki.eclipse.org but am not sure where to go to from here.

Your not alone. Elipse is a constantly morphing ecosystem where billion
dollar boys twist the future for their $elfish reason$.

For example, TI installes Code Composer on top of eclipse for their
"internet of things" embedded linux development ecosystem: Sitara.

http://processors.wiki.ti.com/index.php/Installing_CCS_over_Eclipse

The other semiconductors houses likewise. Many BSP (Board Support Packages)
for newly offered embedded linux system, involve eclipse in some major or
minor way. This approach better integrate support from the SemiConductor
company's point of view for both winblowz and *nix platforms. Most of the
embedded linux kernel vendors, such as MontaVista are similarly using Eclipse:

http://www.mvista.com/development-tools.html

If you guys are deep into hardware at NYU, I'd suggest getting friendly with
one of the big semiconductor houses, via a local FAE or rep. firm and see
what kind of goodies you can get. I use to get hundreds of thousands of
dollars in toys from SemiConductor companies, while at a U. You just got to
talk to them and find the "embedded hotshots" as they like hanging at the U,
imho. Many are hard core coders and still unmarried so those dergraduate
females are of keen value to a total solution community at the U, imho! I
know, I married the worlds smartest female embedded coder, had 3 kids and
retired as a single entrepreneur.

Dam, I'm now missing that sort of (U)) fun.....

Also the FPGA companies are hugely into everything Eclipse, too.

Windows environments are huge with Eclipse, as much of corporate America
is still trying to make Java, the end to all means..... So Eclipse becomes
the bridge between the business college weenies and the engineering groups.
Most business schools teach and use java; Java + Database is huge in the
business world.


Still, Elipse holds interests for me too:

http://www.eclipse.org/proposals/technology.eclipsescada/


So my sugestions is to participate in the NYU "Elipse Thinktank" to see
what exactly they are planning for Eclipse. It's a huge "ecosystem
(echo_system?)" and everybody is lost, but prtenders abound.... ymmv.


Gentoo has not always robustly embraced Java, as Python is the
big daddy here, imho. So once you find out where NYU is headed for Eclipse
you'll be just fine. Be careful, or you could easily be leading the charge:
Java, Java, mocha Java....


hth, cheers!
James

Re: [gentoo-user] using eclipse with java

[Jc García]

2014-04-17 11:15 GMT-06:00  <gottlieb@nyu.edu>:
> On Thu, Apr 17 2014, Jc García wrote:
>
>> 2014-04-17 10:11 GMT-06:00  <gottlieb@nyu.edu>:

> Thank you; that does seem preferable.  Is the binary you refer to the
> one in the following message from emerge (I did a --pretend)?
>
> # A more recent source build maintained by the community is available in the
> # seden overlay. A more recent binary is available in the java-overlay.
>
> thanks again,
> allan
>
No, I was referring to the tarball directly downloaded from
eclipse.org and uncompressed in an arbitrary directory(It worked
alright for me that way).

I hadn't checked out the java overlay for a while, back when I was
settiig up my machine for java,  I remember the binary ebuild there,
wasn't compatible with eclim(this was very important for me), but I
think the most recent one is, although is not the newest eclipse
version.

Re: [gentoo-user] using eclipse with java

[Tom Wijsman]

On Thu, 17 Apr 2014 12:11:05 -0400
gottlieb@nyu.edu wrote:

> I have not yet merged eclipse-sdk.  Must I merge this?  The only
> version in the main tree is masked and it brings in 83! packages.

One Does Not Simply Compile Eclipse[1].

There is dev-util/eclipse-sdk-bin in several overlays[2][3], which
provide a pre-compiled version of that what you are exactly looking for;
but if you want to build eclipse-sdk from source, you're on your own[4].
Unless you get a team together; ping me, then I'll share a WIP version.

 [1] http://thume.ca/2013/03/29/contributing-to-eclipse/
 [2] http://gpo.zugaina.org/dev-util/eclipse-sdk-bin
 [3] https://wiki.gentoo.org/wiki/Layman
 [4] https://bugs.gentoo.org/show_bug.cgi?id=325271#c159

-- 
With kind regards,

Tom Wijsman (TomWij)
Gentoo Developer

E-mail address  : TomWij@gentoo.org
GPG Public Key  : 6D34E57D
GPG Fingerprint : C165 AF18 AB4C 400B C3D2  ABF0 95B2 1FCD 6D34 E57D

Re: [gentoo-user] Re: using eclipse with java

[gottlieb]

On Thu, Apr 17 2014, James wrote:

> If you guys are deep into hardware at NYU,

My group was back in the 1980s and 90s ("nyu ultracomputer" still gets a
bunch of google hits)

> I'd suggest getting friendly with one of the big semiconductor houses,

We did have industrial contact, chiefly with IBM.

> Dam, I'm now missing that sort of (U)) fun.....

Indeed it was an enjoyable period of my life.  A few years ago, I chose
to switch my emphasis from research projects to teaching, I enjoy both
but wanted to spend more time on the latter.

> So my sugestions is to participate in the NYU "Elipse Thinktank" to see
> what exactly they are planning for Eclipse.
>
> Gentoo has not always robustly embraced Java, as Python is the
> big daddy here, imho. So once you find out where NYU is headed for Eclipse
> you'll be just fine. Be careful, or you could easily be leading the charge:
> Java, Java, mocha Java....

Thanks.

It seems like I have the following choices

1.  Install eclipse-sdk from the main tree.
    I worry since it is masked.

2.  Install a source build from the seden overlay.  Garcia recommends
    eclim to permit editing with emacs or vim and hasn't mentioned if it
    works with the seden overlay source.  He says it doesn't work with
    the in tree source.

3.  Install a binary build from the java overlay.  Garcia believes
    this is compatible with eclim.

4.  Install a binary build from eclipse.org.  This gives the latest
    version.

allan

Re: [gentoo-user] using eclipse with java

[gottlieb]

On Thu, Apr 17 2014, Jc García wrote:

> 2014-04-17 11:15 GMT-06:00  <gottlieb@nyu.edu>:
>> On Thu, Apr 17 2014, Jc García wrote:
>>
>>> 2014-04-17 10:11 GMT-06:00  <gottlieb@nyu.edu>:
>
>> Thank you; that does seem preferable.  Is the binary you refer to the
>> one in the following message from emerge (I did a --pretend)?
>>
>> # A more recent source build maintained by the community is available in the
>> # seden overlay. A more recent binary is available in the java-overlay.
>>
>> thanks again,
>> allan
>>
> No, I was referring to the tarball directly downloaded from
> eclipse.org and uncompressed in an arbitrary directory(It worked
> alright for me that way).
>
> I hadn't checked out the java overlay for a while, back when I was
> settiig up my machine for java,  I remember the binary ebuild there,
> wasn't compatible with eclim(this was very important for me), but I
> think the most recent one is, although is not the newest eclipse
> version.

I have now read some more and am questioning if this is worth it.
I don't plan on using eclipse for any real java programming, just to
teach java and eclipse.  Perhaps I will just live with the eclipse
editor for that.  There are faculty at nyu who use it and would be
helpful.

But I still have to get some eclipse.  I have 4 choices

1.  Install eclipse-sdk from the main tree.

2.  Install a source build from the seden overlay.

3.  Install a binary build from the java overlay.

4.  Install a binary build from eclipse.org.

Choice 1 is the easiest (add entry in package.unmask) but I hate using
masked packages.

I prefer source to binary and ebuilds to binary tars so I am planning to
try 2, if that fails then 3, if that fails then 4.

Does this sound reasonable?

allan

Re: [gentoo-user] using eclipse with java

[gottlieb]

On Thu, Apr 17 2014, Tom Wijsman wrote:

> On Thu, 17 Apr 2014 12:11:05 -0400
> gottlieb@nyu.edu wrote:
>
>> I have not yet merged eclipse-sdk.  Must I merge this?  The only
>> version in the main tree is masked and it brings in 83! packages.
>
> One Does Not Simply Compile Eclipse[1].
>
> There is dev-util/eclipse-sdk-bin in several overlays[2][3], which
> provide a pre-compiled version of that what you are exactly looking for;
> but if you want to build eclipse-sdk from source, you're on your own[4].
> Unless you get a team together; ping me, then I'll share a WIP version.
>
>  [1] http://thume.ca/2013/03/29/contributing-to-eclipse/
>  [2] http://gpo.zugaina.org/dev-util/eclipse-sdk-bin
>  [3] https://wiki.gentoo.org/wiki/Layman
>  [4] https://bugs.gentoo.org/show_bug.cgi?id=325271#c159

I see.  Thanks for setting me straight.  I had it wrong.

When I did an
  emerge --pretend eclipse-sdk
I received a note that a recent binary is in the java-overlay.
Is that what you would recommend?  I have used layman in the past for
gnome.

thanks,
allan

Re: [gentoo-user] using eclipse with java

[Tom Wijsman]

On Thu, 17 Apr 2014 18:20:12 -0400
gottlieb@nyu.edu wrote:

> When I did an
>   emerge --pretend eclipse-sdk
> I received a note that a recent binary is in the java-overlay.
> Is that what you would recommend?  I have used layman in the past for
> gnome.

Yes, the binary one in the java overlay works here; I recommend that.

-- 
With kind regards,

Tom Wijsman (TomWij)
Gentoo Developer

E-mail address  : TomWij@gentoo.org
GPG Public Key  : 6D34E57D
GPG Fingerprint : C165 AF18 AB4C 400B C3D2  ABF0 95B2 1FCD 6D34 E57D

Re: [gentoo-user] using eclipse with java

[gottlieb]

On Thu, Apr 17 2014, Tom Wijsman wrote:

> On Thu, 17 Apr 2014 18:20:12 -0400
> gottlieb@nyu.edu wrote:
>
>> When I did an
>>   emerge --pretend eclipse-sdk
>> I received a note that a recent binary is in the java-overlay.
>> Is that what you would recommend?  I have used layman in the past for
>> gnome.
>
> Yes, the binary one in the java overlay works here; I recommend that.

Thanks,
allan

Re: [gentoo-user] using eclipse with java

[gottlieb]

On Thu, Apr 17 2014, Tom Wijsman wrote:

> On Thu, 17 Apr 2014 18:20:12 -0400
> gottlieb@nyu.edu wrote:
>
>> When I did an
>>   emerge --pretend eclipse-sdk
>> I received a note that a recent binary is in the java-overlay.
>> Is that what you would recommend?  I have used layman in the past for
>> gnome.
>
> Yes, the binary one in the java overlay works here; I recommend that.

I get almost immediate segfaults.

I type

  eclipse-bin-7.2

It is basically empty (no projects).
I start a new project called "crash"
I then expand the project, select "src", right click and say "new class"
I call the class "Crash" and it give a correct skeleton
I go to the blank line above "public class Crash {" and start to type
"import java.util.scanner"

I get as far as "import java." then it pops up a window with completions
and segfaults.  It is quite repeatable.  This happens on a fresh install
of eclipse-bin.

Any advice?  Should I look for a binary on the eclipse site?

thanks,
allan

Re: [gentoo-user] using eclipse with java

[Tom Wijsman]

[-- Attachment #1: Type: text/plain, Size: 1325 bytes --]

On Mon, 28 Apr 2014 16:08:18 -0400
gottlieb@nyu.edu wrote:
 
> I get almost immediate segfaults.
> 
> I type
> 
>   eclipse-bin-7.2
> 
> It is basically empty (no projects).
> I start a new project called "crash"
> I then expand the project, select "src", right click and say "new
> class" I call the class "Crash" and it give a correct skeleton
> I go to the blank line above "public class Crash {" and start to type
> "import java.util.scanner"
> 
> I get as far as "import java." then it pops up a window with
> completions and segfaults.  It is quite repeatable.  This happens on
> a fresh install of eclipse-bin.

Eclipse SDK 4.2 works here; strange that it doesn't for you, it might
be some incompatibility perhaps with one or another library.

Given that it is binary I'm unsure if this can be debugged...

> Any advice?  Should I look for a binary on the eclipse site?

Yes, try one from the Eclipse site and put it in /opt/ (create symlinks
in /usr/local/bin/); there is 4.3 there, I think we need to bump to
that in the Java overlay at some point as 4.2 is getting somewhat old.

-- 
With kind regards,

Tom Wijsman (TomWij)
Gentoo Developer

E-mail address  : TomWij@gentoo.org
GPG Public Key  : 6D34E57D
GPG Fingerprint : C165 AF18 AB4C 400B C3D2  ABF0 95B2 1FCD 6D34 E57D

[-- Attachment #2: signature.asc --]
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Re: [gentoo-user] using eclipse with java

[gottlieb]

On Mon, Apr 28 2014, Tom Wijsman wrote:

> On Mon, 28 Apr 2014 16:08:18 -0400
> gottlieb@nyu.edu wrote:
>  
>> I get almost immediate segfaults.
>> 
>> I type
>> 
>>   eclipse-bin-7.2
>> 
>> It is basically empty (no projects).
>> I start a new project called "crash"
>> I then expand the project, select "src", right click and say "new
>> class" I call the class "Crash" and it give a correct skeleton
>> I go to the blank line above "public class Crash {" and start to type
>> "import java.util.scanner"
>> 
>> I get as far as "import java." then it pops up a window with
>> completions and segfaults.  It is quite repeatable.  This happens on
>> a fresh install of eclipse-bin.
>
> Eclipse SDK 4.2 works here; strange that it doesn't for you, it might
> be some incompatibility perhaps with one or another library.
>
> Given that it is binary I'm unsure if this can be debugged...
>
>> Any advice?  Should I look for a binary on the eclipse site?
>
> Yes, try one from the Eclipse site and put it in /opt/ (create symlinks
> in /usr/local/bin/); there is 4.3 there, I think we need to bump to
> that in the Java overlay at some point as 4.2 is getting somewhat old.

The one from the Eclipse is *MUCH* better.  It works.
Thanks,
allan