getPackages can't handle anonymous inner classes

[agustinuslaw]

Describe the bug
For both YUML and PlantUML, the method getPackages will fail if any class contains anonymous inner classes.

To Reproduce
Steps to reproduce the behavior:

1. Create class with anonymous class

package org.test.stuff;
public class Stuff {
	public static void doThing() {
		// anonymous class
		new Runnable() {public void run() {}}.run();
	}
}

2. Generate UML

PlantUML generator = new PlantUML();
generator.addPackages("org.test.stuff");
String diagramText = generator.generateClassDiagram();

Expected behavior

java.lang.IllegalArgumentException: Cannot be empty!
	at br.com.luque.java2uml.core.classdiagram.reflection.model.BaseItem.setName(BaseItem.java:23)
	at br.com.luque.java2uml.core.classdiagram.reflection.model.BaseItem.<init>(BaseItem.java:10)
	at br.com.luque.java2uml.core.classdiagram.reflection.model.Clazz.<init>(Clazz.java:12)
	at br.com.luque.java2uml.core.classdiagram.reflection.model.ScopedClazz.<init>(ScopedClazz.java:14)
	at br.com.luque.java2uml.core.classdiagram.reflection.model.ClazzPool.getFor(ClazzPool.java:26)
	at br.com.luque.java2uml.plantuml.writer.classdiagram.PlantUMLWriter.generateClassDiagramUsing(PlantUMLWriter.java:23)
	at br.com.luque.java2uml.plantuml.PlantUML.generateClassDiagram(PlantUML.java:47)
	at br.com.luque.java2uml.plantuml.PlantUML.generateClassDiagram(PlantUML.java:59)

Screenshots
If applicable, add screenshots to help explain your problem.

(please complete the following information):

• Version 1.0.0 commit c3659ef
  c3659ef | Leandro Luque | 2025-02-09T18:27:53+01:00 | fix: fix issue with visibility detector

Additional context
The setup above will generate the following classes from classloader.

org.test.stuff.Stuff.class
org.test.stuff.Stuff$1.class

For a quick fix you can just exclude '$' containing resources by default.

That's also how I worked around this issue, by listing the classes recursively and using addClasses instead of addPackages.

[leluque]

Sorry for the delay. Thanks for noticing that. Do you already have a fork for the project? If yes, create a pull request and I review it and integrate to the repo.

[agustinuslaw]

Hi, no I only want to inform.

I did a quick hacky workaround for my own project. Not suitable for a pull request.