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BuildPath 'JRE System Library' .jars clutter Project&PackageExplorer [message #524196]

Wed, 31 March 2010 02:57

Eclipse User

i am basically writing my first Java programs.

but i've looked at the eclipse help a lot about this..

it seems that one has to tell the 'Build Path' to include the 'JRE System Library'

okay, but then the Project 'folders' for your projects
each have about two dozen jar files, listed next to
the /src folder at the top level of each project...
(these jars aren't actually on your hard disk in the actual project-directory-folders,
they are just in the 'Projects' & 'Package Explorer' panels...
they are repeated in each project, with about 24 .jar files being listed each time).

. . . . .

http://farm5.static.flickr.com/4052/4477915235_29f91f8395_o.png

they are basically clutter --
one usually doesn't edit the System Library source;
and having it redundantly listed (24 jar files every time in each Project) is just a mess.
i would guess that this is not how it is supposed to be.

there are a couple ways to 'Remove' the SystemLibrary from each BuildPath...
but then: nothing compiles, getting very basic errors about String or System or main..

so:
isn't there a way to have the "JRE System Library" be a truly default thing
'included' in the compilation WITHOUT it cluttering up the Package Explorer or the Projects folders?

[Updated on: Wed, 31 March 2010 03:00] by Moderator

Re: BuildPath 'JRE System Library' .jars clutter Project&PackageExplorer [message #524283 is a reply to message #524196]

Wed, 31 March 2010 08:14

Eclipse User

Eclipse should add the default JRE when you create a new Java Project. I suggest checking your configuration to see if there is one configured and if it's set as the default JRE for the workspace.

About the jars cluttering your Project and Package view, you can use the "Customize View..." menu in the little triangle in the upper right corner of each view.

Ther you can select what you do and don't want to see in each view. To avoid seeing the Jars that were added to the project, just select the "Libraries from external" that "Hides external libraries i.e. those not contained inside the project itself".

Re: BuildPath 'JRE System Library' .jars clutter Project&PackageExplorer [message #524440 is a reply to message #524283]

Wed, 31 March 2010 19:18

Eclipse User

thank you.

that worked (view filtering triangles). i'll understand the logic (etc) of all this in the months ahead...

if you know a good path to learning Eclipse thoroughly, tutorials or perhaps if necessary a book, or some other ways, please point me over there.

Re: BuildPath 'JRE System Library' .jars clutter Project&PackageExplorer [message #524553 is a reply to message #524440]

Thu, 01 April 2010 07:57

Eclipse User

I'm sorry but I don't know about simple tutorials. I think that you can read more about Eclipse in its documentation site:

http://www.eclipse.org/documentation/

Or go directly to the Galileo's if that is the version you're using:

http://help.eclipse.org/galileo/index.jsp

It take some time to get used to it but Eclipse is pretty intuitive, you just need some time. I quit using it a few times before really start to loving it. Razz

Today I wouldn't change it for nothing, it's a great tool.

Re: BuildPath 'JRE System Library' .jars clutter Project&PackageExplorer [message #524933 is a reply to message #524553]

Sun, 04 April 2010 08:23

Eclipse User

thank you for your help getting started with Eclipse Smile

i am surprised by how good Java 6 and Eclipse are...
and i think i will be using Eclipse for Python and livecoding too i hope

*

I looked for some ECLIPSE BEGINNER TUTORIALS ...

and found these....

..... http://eclipsetutorial.sourceforge.net/introduction.html

they are EXCELLENT
they should be much better known.

the Eclipse.org site *should* feature them prominently.
but it doesn't.... !?

so, this site is amazing (they are made by someone named "Mark Dexter"):

..... http://eclipsetutorial.sourceforge.net/introduction.html

VERY clear, smart, thorough... well-made tutorials in using Eclipse
(and, they are also an introduction to Java, OOp, Debugging, and UnitTesting).

There are four topics (series of vids):
each of the four topics covered by his tutorials has from 6 to 16 vids,
each vid is about about 10 minutes each, roughly.

EXCELLENT. NOT KIDDING.

*perfect* for beginners AND intermediate Eclipse pilots.

* * * *

Here are the titles of the 4 series (and, each vid 'episode' covers specific topics) :

1) Using the Eclipse Workbench ( this series has 6 vids )

2) Eclipse and Java for Total Beginners ( this series has 16 vids ! ! )

3) Eclipse and Java: Using the Debugger ( this has 7 vids ! )

4) Eclipse and Java: Introducing Persistence ( this has 12 vids !! )

* * * *

These are well written and well made...
with their own flash-based screencast-viewer...
... with english subtitles that you can turn on or off if you want !

AND:
It has a 'Companion PDF' also;
the pdf has recommendations on other good resources,
and a summary of the topics in the vids,
AND it contains the source code in the vids (for A PERSONAL LIBRARY CHECK-OUT SYSTEM)..
and other stuff (glossary)..

ALL VERY WELL DONE.

The vids are hosted at sourceforge.net
and you download them one at a time (as ZIP files).
After a few minutes of reading (about four pages at the website), you'll see how he organized it.

THEY ARE IN ZIP FILES EACH CONTAINING ONE FLASH VID, AND ONE HTML PAGE,
so you watch them in your browser "at home" (except fot the first vid, that's online).
(The companion PDFs for each series is located with all the ZIP files.)

So to help you get there in one click:

the Project Download Page is:
http://sourceforge.net/projects/eclipsetutorial/files/

& here is the most relevant quote from the "totalbeginner" page of the website:
( ie, from http://eclipsetutorial.sourceforge.net/totalbeginner.html ) :

"You can view lesson 1 without downloading it.
To download all of the lessons, go to the project download page.
Be sure to download the Tutorial Companion Guide (PDF format)."

I see that someone at Eclipse Foundation is credited with helping him with making these... these are very well done.

Go Look !

Thumbs Up

-- ian.

ps

excuse me adding more... but i just found there is a forum for the vids at:
http://sourceforge.net/projects/eclipsetutorial/forums/forum /714285

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