The default access for everything in C# is “the most restricted access you could declare for that member”. So for example: namespace MyCompany { class Outer { void Foo() {} class Inner {} } } is equivalent to namespace MyCompany { internal class Outer { private void Foo() {} private class Inner {} } } … Read more
internal is for assembly scope (i.e. only accessible from code in the same .exe or .dll) private is for class scope (i.e. accessible only from code in the same class).
Utility or helper classes/methods that you would like to access from many other classes within the same assembly, but that you want to ensure code in other assemblies can’t access. From MSDN (via archive.org): A common use of internal access is in component-based development because it enables a group of components to cooperate in a … Read more
The final keyword has several usages in Java. It corresponds to both the sealed and readonly keywords in C#, depending on the context in which it is used. Classes To prevent subclassing (inheritance from the defined class): Java public final class MyFinalClass {…} C# public sealed class MyFinalClass {…} Methods Prevent overriding of a virtual … Read more
Access modifiers From docs.microsoft.com: public The type or member can be accessed by any other code in the same assembly or another assembly that references it. private The type or member can only be accessed by code in the same class or struct. protected The type or member can only be accessed by code in … Read more
The official tutorial may be of some use to you. Class Package Subclass(same pkg) Subclass(diff pkg) World public + + + + + protected + + + + no modifier + + + private + + : accessible blank : not accessible