In Java, we have 4 visibility levels. Except public and private, we have protected level and a default level (with no modifier) that is also called "package-local" or "package-privat...

In case the tests are in a different module than the production code (which is common), what's the best way to make internal functions visible for tests? In Java, I would have the production code ...

I'm mainly a Java developer and wonder about structure when writing unit test in kotlin, Assuming there's no package-private in kotlin private to restrict visibility to the file internal to restri...

I am trying to get an instance of a non-visible class, AKA package private class, using reflection. I was wondering if there was a way to switch the modifiers to make it public and then access it u...

I am looking for an explanation for the following behavior: I have 6 classes, {a.A,b.B,c.C,a.D,b.E,c.F}, each having a package visible m() method that writes out the class name. I have an a.Main ...

Why is the default access modifier in JUnit 5 package-private? Tests in JUnit 4 had to be public. What is the benefit of changing it to package-private?

This one is puzzling me. I created a minimal JAX-RS application based on JavaEE7 running on Wildfly 10.1. @ApplicationPath("") public class JAXRSConfiguration extends Application { @Override pu...

In one package (a) I have two functional interfaces: package a; @FunctionalInterface interface Applicable<A extends Applicable<A>> { void apply(A self); } - package a; @Function...

I am a little confused over the term "package private" that some of the documentation uses, along with the usage of "default access." Aren't package-private and default access both synonymous with ...

I just found out about a pretty weird behaviour of Scala scoping when bytecode generated from Scala code is used from Java code. Consider the following snippet using Spark (Spark 1.4, Hadoop 2.6): ...

I am learning Java recently, and I came across the notion of package-private classes, which is the default if we don't specify anything. But then I realized: I seldom see the use of package-priva...

I just came accross the following code, which surprised me a little bit, I converted it to a simple SSCEE here though: custompackage.package1.MyEnum.java public enum MyEnum implements MyInterface...

I love access control in any language, but I find that in Java I almost never (if ever) use the package-private access modifier (or lack thereof). I realize that inner classes can be private...

Please don't post an answer saying "you shouldn't do this." I don't plan to use this in production code, but only for some hacking fun. In answering this question, I wanted to run some arbitrary u...

Because of an issue with package name aux under Windows, I am moving a helper class within the package hierarchy of my library from de.sciss.scalainterpreter.aux to de.sciss.scalainterpreter ...

I have 2 Java packages, A & B. Let's say that some classes in package B want to use some classes in package A however, when a developer comes along and develops package C (or, say, application ...

Since an enum constructor can only be invoked by its constants, why is it then allowed to be package-private?

This is possible in Java: package x; public class X { // How can this method be public?? public Y getY() { return new Y(); } } class Y {} So what's a good reason the Java compiler lets me...

I'm learning C# and coming from a Java world, I was a little confused to see that C# doesn't have a "package private". Most comments I've seen regarding this amount to "You cannot do it; the langua...

Suppose I have a class in my package org.jake and it has a method with default access (no modifier). Then the method is visible inside the package only. However, when someone receives the jar of m...