Failing to setup two distinct packages in the same project with NetBeans IDE 19

I'm trying to setup a project in NetBeans IDE 19 to have two packages in order to test Java protected access modifier.

My setup is the following:

Project: TestAccessModifiersProtected
   \- package: com.agheorghe.testaccessmodifiersprotecteda
       |- class: TestAccessModifiersProtectedA.java
   \- package: com.agheorghe.testaccessmodifiersprotectedb
       |- class: TestAccessModifiersProtectedB.java

when trying to run the code in TestAccessModifiersProtectedB.java class I get the following error:

Error: Could not find or load main class com.agheorghe.testaccessmodifiersprotected.TestAccessModifiersProtected
Caused by: java.lang.ClassNotFoundException: com.agheorghe.testaccessmodifiersprotected.TestAccessModifiersProtected
Command execution failed

I have tried:

• changing the package com.agheorghe.testaccessmodifiersprotecteda to com.agheorghe.testaccessmodifiersprotected and run TestAccessModifiersProtectedB.java - result: same error
• changing also the package com.agheorghe.testaccessmodifiersprotectedb to com.agheorghe.testaccessmodifiersprotected and run TestAccessModifiersProtectedB.java - result: same error
• change classes to TestAccessModifiersProtected

---

My code is the following:

TestAccessModifiersProtectedA.java

package com.agheorghe.testaccessmodifiersprotecteda;

public class TestAccessModifiersProtectedA {
    
    protected void display() {
        System.out.println("TestAccessModifiersProtectedA");
    }
}

TestAccessModifiersProtectedB.java

package com.agheorghe.testaccessmodifiersprotectedb;
import com.agheorghe.testaccessmodifiersprotecteda.*;

class TestAccessModifiersPotectedB extends TestAccessModifiersProtectedA {
    
    public static void main(String args[]) {
        TestAccessModifiersPotectedB obj = new TestAccessModifiersPotectedB();
        
        /* Prints "TestAccessModifiersPotectedA" */
        obj.display();
    }
}

---

Any ideas as to why NetBeans fails to run code in TestAccessModifiersProtectedB.java? Why is it taking the project name (TestAccessModifiersProtected) literal for my packages + classes?

I would expect to build the path to the class by including the package and the class so as to resolve such cases.

How can I succeed in keeping two packages separated in the same project?

The solution is to name both the package and the class in the way the project is named.

For example, for project TestMyProject, NetBeans IDE 19 will expect a package: com.mycompany.testmyproject and a class TestMyProject.java in that package.