Eclipse gives warning on access restriction for jfxrt.jar classes

Question

I'm using eclipse kepler with java SE 1.8 jdk system library but when I use any javafx classes or methods eclipse gives a warning like Access restriction: The type 'TableColumn<?,?>' is not API (restriction on required library 'C:\Program Files\Java\jdk1.8.0_05\jre\lib\ext\jfxrt.jar').

I have tried adding an access rule to the system library to allow access for all jars in the library using the wildcard * but the warning is still there. Am also using maven for building project. The code works but the warning is nagging and is affecting readability as I code. Any help is appreciated.

Edit: I also tried adding @SuppressWarnings("restriction") at the beginning of my classes but this still doesn't solve the unknown cause and hides all other restriction warnings that I may need to see

possible duplicate of [Using JavaFX in JRE 8](http://stackoverflow.com/questions/22812488/using-javafx-in-jre-8) — Hilikus, Mar 06 '15 at 01:57
You have the wildcard syntax wrong. You used `*` which is non recursive, you meant to use `**`, and you *should* have used `javafx/**` only. See my answer below. — Has QUIT--Anony-Mousse, Jan 20 '17 at 12:48

score 34 · Answer 1 · answered Oct 17 '15 at 14:34

34

I'm able to get past this by reconfiguring Java library. For example, explicitly selecting Oracle JDK does the trick.

answered Oct 17 '15 at 14:34

Hollis Waite

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This exact technique worked for me exactly as described – systemcpro Dec 01 '17 at 10:45

score 8 · Answer 2 · answered Mar 25 '15 at 03:52

The easy way is to install e(fx)clipse - a plugin for Eclipse to support JavaFX:

Select Help -> Install New Software
Click Add button to add the following site:
- Name: efxclipse
- Location: http://download.eclipse.org/efxclipse/updates-released/1.2.0/site
Click OK
In the "Work with" dropdown list, select the recently added site "efxclipse"
Check the checkbox "e(fx)clipse - install" to install all components of this selection
Move to next steps to finish the installation
Restart your Eclipse. If it still doesn't recognize JavaFX library, restart it again.

Original information can be found here: https://www.eclipse.org/efxclipse/install.html#for-the-lazy

ltalhouarne · Accepted Answer · 2015-11-03T13:48:01.277

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You can choose ignore in the following settings:

Windows -> Preferences -> Java -> Compiler -> Errors/Warnings
(Project) Properties -> Java Compiler -> Errors/Warnings

Use filter to find "Forbidden reference"

Forbidden reference (access rules) : Change it to "ignore"

enter image description here

edited Nov 03 '15 at 13:48

answered Jul 14 '14 at 18:14

ltalhouarne

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Thanks for the help, but if I could fix the cause of the warning rather than suppress it that would be better. – Japheth Ongeri - inkalimeva Jul 14 '14 at 18:21
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I would strongly discourage that solution and it shouldn't be the accepted one. You will change the settings for ALL libraries, not only JavaFX. One should make sure to use the JDK in the build path as indicated by the answer below... – mmey Jul 08 '16 at 09:02
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Rather than suppress the warning, just add the proper access rules. See my new answer below. – broc.seib May 21 '17 at 06:43

score 4 · Answer 4 · edited May 23 '17 at 12:02

Add an access rule to allow access to javafx/**.

See also this answer: https://stackoverflow.com/a/32062263/1060350

For all I can tell, this is a bug in Eclipse in my opinion. I also could not find a way to configure this globally in Eclipse, but you need to redo it for every project.

Navigate to Project settings, Build path, Libraries, JRE. Click on "Access rules" which should have "No rules defined" usually. Add a new rule: "Accessible", and enter the pattern "javafx/**".

This tells the Eclipse Java compiler that javafx.* is an official API that you are allowed to use, so the warning goes away.

Clearly, allowing access to javafx only is much better than ignoring the warning.

The reason why * did not work is because you did not read the wildcard definition. In the access rules, * only matches once, you need ** to match at any depth. I.e. * will allow access to javafx.SomeClass but not not javafx.scene.SomeClass...

score 2 · Answer 5 · answered May 11 '17 at 06:38

Add an access rule for javafx.

Right click your project > Properties > Java Build Path > Libraries tab, then:

Expand JRE System Library
select Access Rules, click Edit... button
click Add...
choose Resolution: Accessible
set Rule Pattern: javafx/**
click OK
click OK

Eclipse gives warning on access restriction for jfxrt.jar classes

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