Problem using Java with Ant projects

[NttCAD]

Apache NetBeans version

Apache NetBeans 21

What happened

1. Use NetBeans 20 (21 doesn't work)

2. Create new java with Ant library class project, and create the class Jlib:

package jlib;

public class Jlib {

public void printMessage() {
	System.out.print("Ciao!");
}

}

3. Create new Java applicationant project with a Main Class:

package japp;

import jlib.Jlib;

public class Japp {

public static void main(String[] args) {
	Jlib jlib = new Jlib();
	jlib.printMessage();
}

}

4. Right click property of Japp and add Jlib to the Classpath

5. Compile the projects and run.

Language / Project Type / NetBeans Component

Java application and library with Ant

How to reproduce

6. This is what I see into the output window:

run:
Exception in thread "main" java.lang.RuntimeException: Uncompilable code - cannot find symbol
symbol: class Jlib
location: class japp.Japp
at japp.Japp.main(Japp.java:1)
/home/luca/.cache/netbeans/20/executor-snippets/run.xml:111: The following error occurred while executing this line:
/home/luca/.cache/netbeans/20/executor-snippets/run.xml:68: Java returned: 1
BUILD FAILED (total time: 2 seconds)

7. Also the editor does not see Jlib.

Did this work correctly in an earlier version?

Apache NetBeans 16 or earlier

Operating System

Ubunt 22.04

JDK

JDK 21

Apache NetBeans packaging

Apache NetBeans binary zip

Anything else

No response

Are you willing to submit a pull request?

No

[pedro-w]

I can't reproduce this on NB 21 (Windows) and JDK21. If you want to add a dependency on JLib to JApp, the best way is to right click on the Libraries of JApp and add JLib as a project, then NB will handle setting the classpath for you. But I tried just adding the jar directly to the classpath and that was OK too. Does the jar for JLib definitely contain the classes you expect it to?

[NttCAD]

Tried again on NB 21(Ubuntu) ... doesn't work for me

[ebarboni]

Do you have the log eventually ?

[pedro-w]

I made a zip with 2 projects (nttjapp and nttjlib) in it. You can use it with File | Import Project | From Zip... . When I do this, I can just select the 'nttjapp' project and press Run Project, then NB will compile both projects and run the app. Please can you try and report what happens - if it doesn't work, look at the log as Eric has suggested.
ntt.zip

ant -f D:\\temp\\ntt\\nttjapp -Dnb.internal.action.name=run run
init:
deps-jar:
Created dir: D:\temp\ntt\nttjapp\build
Updating property file: D:\temp\ntt\nttjapp\build\built-jar.properties
nttjlib.init:
nttjlib.deps-jar:
Created dir: D:\temp\ntt\nttjlib\build
Updating property file: D:\temp\ntt\nttjapp\build\built-jar.properties
Created dir: D:\temp\ntt\nttjlib\build\classes
Created dir: D:\temp\ntt\nttjlib\build\empty
Created dir: D:\temp\ntt\nttjlib\build\generated-sources\ap-source-output
Compiling 1 source file to D:\temp\ntt\nttjlib\build\classes
nttjlib.compile:
Created dir: D:\temp\ntt\nttjlib\dist
Building jar: D:\temp\ntt\nttjlib\dist\nttjlib.jar
nttjlib.deploy:
nttjlib.jar:
Created dir: D:\temp\ntt\nttjapp\build\classes
Created dir: D:\temp\ntt\nttjapp\build\empty
Created dir: D:\temp\ntt\nttjapp\build\generated-sources\ap-source-output
Compiling 1 source file to D:\temp\ntt\nttjapp\build\classes
compile:
run:
Ciao!BUILD SUCCESSFUL (total time: 2 seconds)

[NttCAD]

Your project works! But if I create this project with my NB 21 on my Linux Ubuntu, it doesn't work.

[NttCAD]

So the build is succesful but editor signal errors.

[NttCAD]

In my opinion you should try tu create the projects on Ubuntu.

[matthiasblaesing]

I'm on Ubuntu 23.10, with Amazon Corretto 21 and this is not reproducible. @NttCAD did you compile the library project?

Edit: not even removing all intermediately created build and dist folders reproduces the problem.

BUT: @NttCAD did you add the library to the module- or to the classpath?

[NttCAD]

Maybe you don't belive me, but YES

[matthiasblaesing]

@NttCAD please check my comment again. Before you answered I had already checked, that compilation of the projects does not change anything. But if you added the library project to the module path of the application project and not to the classpath of the project, then I can reproduce your observation.
If you really added the project to the module path, then this is not a NetBeans issue, but a misunderstand what the module path is and how it differs from the classpath.
@pedro-w did the right thing by sharing the project he created. Please do so too.

[NttCAD]

Into the "projet properties" window of my java ant application, "Compile" tab, I added my java library projet to the "Classpath"; not "Module" (I don't use any module). I'm using NB 21, downloaded Binaries (Platform Independent) on ubuntu linux.

[matthiasblaesing]

@NttCAD then please provide the projects that you tested with as ZIP. Maybe that can sched some light on the difference.

[NttCAD]

OK. I'ill try... Thank you.
nttcad-project.zip

[NttCAD]

[NttCAD]

provided zip file and some screenshot

[pedro-w]

I see filenames with '!' in them, e.g. /dati/!/prjs/Japp - could this cause a problem in the NB editor but not in javac?

[NttCAD]

Incredible... changing folder name it works!!

Created dir: /dati/test/Japp/dist
Copying 1 file to /dati/test/Japp/build
Copy libraries to /dati/test/Japp/dist/lib.
Building jar: /dati/test/Japp/dist/Japp.jar
To run this application from the command line without Ant, try:
java -jar "/dati/test/Japp/dist/Japp.jar"
deploy:
jar:
BUILD SUCCESSFUL (total time: 3 seconds)

run:
Ciao!BUILD SUCCESSFUL (total time: 0 seconds)

[neilcsmith-net]

Good catch @pedro-w - I assume this is caused somewhere by a conflict with use of ! as separator in JAR URLs. Not sure how easily this would be fixable, or even how desirable it would be to do so?

[trashgod]

@neilcsmith-net: I'm not sure it add anything, but URIs and URLs mentions ! in how JAR URLs work.

[pedro-w]

I think it ought to be fixed if it can be. Probably a not high priority though, I can't remember having seen '!' as a path before - but it is perfectly valid, also in Windows. Has anyone any idea how easy this would be to fix?

[neilcsmith-net]

Well, first need to work out if my assumption is correct, and if so where the URL is coming from. It probably requires the file part of the JAR URL to have the ! escaped. Interestingly, a quick code search found this line - https://github.com/apache/netbeans/blob/master/platform/openide.filesystems/src/org/openide/filesystems/JarArchiveRootProvider.java#L178

[pedro-w]

A smoking gun perhaps Neil?

I can confirm that this also affects Windows and Mac (i.e. having projects in a subdirectory of !) and if you turn off Compile on Save then you can build & run projects from the IDE but the editor still puts red squiggles under the classes from the other project.

[NttCAD]

But I don't understand: this bug is into NetBeans or into JDK? Because I'm using java.util.ResourceBundle class from inside a Jar file, ang I had java.util.MissingResourceException. Now I need to rename the folder "!" and works.

ant -f /dati/!/prjs/nttcad/ant.xml "run cad"
run cad:
Exception in thread "main" java.util.MissingResourceException: Can't find bundle for base name nttcad/nttcad/resources/RB, locale it_IT
at java.base/java.util.ResourceBundle.throwMissingResourceException(ResourceBundle.java:2059)
at java.base/java.util.ResourceBundle.getBundleImpl(ResourceBundle.java:1697)
at java.base/java.util.ResourceBundle.getBundleImpl(ResourceBundle.java:1600)
at java.base/java.util.ResourceBundle.getBundleImpl(ResourceBundle.java:1555)
at java.base/java.util.ResourceBundle.getBundle(ResourceBundle.java:861)
at nttcad.common.util.RBObject.(Unknown Source)
at nttcad.nttcad.resources.RB.msg(Unknown Source)
at nttcad.nttcad.main.About.show(Unknown Source)
at nttcad.nttcad.main.MainListener.createJFrame(Unknown Source)
at nttcad.nttcad.Main.createJFrame(Unknown Source)
at nttcad.nttcad.Main.createJFrame(Unknown Source)
at nttcad.cad.Cad.main(Unknown Source)
Caused by: java.lang.NoClassDefFoundError: IllegalName: nttcad/nttcad/resources/RB
at java.base/java.lang.ClassLoader.preDefineClass(ClassLoader.java:901)
at java.base/java.lang.ClassLoader.defineClass(ClassLoader.java:1025)
at java.base/java.security.SecureClassLoader.defineClass(SecureClassLoader.java:150)
at java.base/jdk.internal.loader.BuiltinClassLoader.defineClass(BuiltinClassLoader.java:862)
at java.base/jdk.internal.loader.BuiltinClassLoader.findClassOnClassPathOrNull(BuiltinClassLoader.java:760)
at java.base/jdk.internal.loader.BuiltinClassLoader.loadClassOrNull(BuiltinClassLoader.java:681)
at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:639)
at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:188)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:526)
at java.base/java.util.ResourceBundle$Control.newBundle0(ResourceBundle.java:3184)
at java.base/java.util.ResourceBundle$Control.newBundle(ResourceBundle.java:3165)
at java.base/java.util.ResourceBundle.loadBundle(ResourceBundle.java:1998)
at java.base/java.util.ResourceBundle.findBundle(ResourceBundle.java:1784)
at java.base/java.util.ResourceBundle.findBundle(ResourceBundle.java:1736)
at java.base/java.util.ResourceBundle.findBundle(ResourceBundle.java:1736)
at java.base/java.util.ResourceBundle.getBundleImpl(ResourceBundle.java:1670)
... 10 more

[pedro-w]

I think this may be unrelated, but that's only a guess without seeing more code.

Caused by: java.lang.NoClassDefFoundError: IllegalName: nttcad/nttcad/resources/RB

That name should be a class name, not a path, so it should look more like nttcad.nttcad.resources.RB, see for example here. Have a look at nttcad.common.util.RBObject specifically around the call to getBundle.

This might be better on the mailing list, have you subscribed to it?

The issue you reported at the top is a bug in NB, I believe, the the JDK itself does not have a problem with ! in the path.

[neilcsmith-net]

This might be better on the mailing list, have you subscribed to it?

Or GitHub discussions, which we can migrate issues to. Am going to migrate this. I think there might be an issue to narrow down from this discussion - feel free to open one that's more targeted once we're clearer where the bug is, and whether it's even in NetBeans.

[NttCAD]

I provide you a simple project to test java.util.ResourceBundle.
NB21 compile and run succesfully, because .class file are executed, not .jar.

But from the command line, I se the exception:

luca@luca-J4125NHU:/dati/!/prjs/rb/dist$ /opt/jdk-21.0.2/bin/java -jar rb.jar
Exception in thread "main" java.util.MissingResourceException: Can't find bundle for base name rb/resources/RB, locale it_IT
at java.base/java.util.ResourceBundle.throwMissingResourceException(ResourceBundle.java:2059)
at java.base/java.util.ResourceBundle.getBundleImpl(ResourceBundle.java:1697)
at java.base/java.util.ResourceBundle.getBundleImpl(ResourceBundle.java:1600)
at java.base/java.util.ResourceBundle.getBundleImpl(ResourceBundle.java:1555)
at java.base/java.util.ResourceBundle.getBundle(ResourceBundle.java:861)
at rb.Rb.main(Rb.java:11)
Caused by: java.io.FileNotFoundException: /dati (È una directory)
at java.base/java.io.RandomAccessFile.open0(Native Method)
at java.base/java.io.RandomAccessFile.open(RandomAccessFile.java:356)
at java.base/java.io.RandomAccessFile.(RandomAccessFile.java:273)
at java.base/java.io.RandomAccessFile.(RandomAccessFile.java:223)
at java.base/java.util.zip.ZipFile$Source.(ZipFile.java:1492)
at java.base/java.util.zip.ZipFile$Source.get(ZipFile.java:1458)
at java.base/java.util.zip.ZipFile$CleanableResource.(ZipFile.java:724)
at java.base/java.util.zip.ZipFile.(ZipFile.java:251)
at java.base/java.util.zip.ZipFile.(ZipFile.java:180)
at java.base/java.util.jar.JarFile.(JarFile.java:345)
at java.base/sun.net.www.protocol.jar.URLJarFile.(URLJarFile.java:100)
at java.base/sun.net.www.protocol.jar.URLJarFile.getJarFile(URLJarFile.java:69)
at java.base/sun.net.www.protocol.jar.JarFileFactory.getOrCreate(JarFileFactory.java:106)
at java.base/sun.net.www.protocol.jar.JarURLConnection.connect(JarURLConnection.java:110)
at java.base/sun.net.www.protocol.jar.JarURLConnection.getInputStream(JarURLConnection.java:153)
at java.base/java.util.ResourceBundle$Control$2.run(ResourceBundle.java:3251)
at java.base/java.util.ResourceBundle$Control$2.run(ResourceBundle.java:3240)
at java.base/java.security.AccessController.doPrivileged(AccessController.java:571)
at java.base/java.util.ResourceBundle$Control.newBundle0(ResourceBundle.java:3239)
at java.base/java.util.ResourceBundle$Control.newBundle(ResourceBundle.java:3165)
at java.base/java.util.ResourceBundle.loadBundle(ResourceBundle.java:1998)
at java.base/java.util.ResourceBundle.findBundle(ResourceBundle.java:1784)
at java.base/java.util.ResourceBundle.findBundle(ResourceBundle.java:1736)
at java.base/java.util.ResourceBundle.findBundle(ResourceBundle.java:1736)
at java.base/java.util.ResourceBundle.getBundleImpl(ResourceBundle.java:1670)
... 4 more

Obviously, if I rename the folder "!", it works.

luca@luca-J4125NHU:/dati/test/rb/dist$ /opt/jdk-21.0.2/bin/java -jar rb.jar
Annulla

rb.zip

[pedro-w]

Ciao!
I looked into this a bit. As far as I can see, escaping ! with %21 is the thing to do.
I did this in the line @neilcsmith-net suggested - this stops the red squiggles in the editor but 'Go to declaration' etc. don't work.
I further modified ArchiveURLMapper, now it does jump to the destination (i.e. if I press ctrl+b on Jlib it goes to the library project BUT it goes to the decompiled class file rather than the source.
More work needed.

[pedro-w]

Well, this is vary confusing.
The original issue with Netbeans I think can be solved if we can track down all the instances where NB creates a jar:file: URL without escaping the file path. That could be a utility method somewhere.
Second issue relating to ResourceBundle - this seems fundamental to the JDK. If I create a JAR which uses ResourceBundles implemented as property files (i.e PropertyResourceBundle then that JAR will not work or work depending on whether it's in a directory with ! in it or not, independent of Netbeans.
But I can't believe something like this has not been found and fixed already? Am I doing it wrong?