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.