class-visibility

I am doing a test project to learn about XML serialization of an object, and I am getting an odd runtime error: namespace SerializeTest { public partial class Form1 : Form { public Form1() { InitializeComponent(); } private void Form1_Load(object sender, EventArgs e) { } private void serializeConnection(Conn connection) { XmlSerializer serializer = new XmlSerializer(typeof(Conn)); TextWriter textWriter = new StreamWriter(@"serialized.xml"); serializer.Serialize(textWriter, connection); textWriter.Close(); } static List<Conn> deserializeConnection() { XmlSerializer deserializer = new

I have a public static class within another public class as follows: public class Foo<A> { public static class Bar<A>{ A firstBar; Bar(A setBar){ this.firstBar=setBar; } } public final Bar<A> instanceBar; public Foo(A actualValue) { instanceBar = new Bar<A>(actualValue); } public Bar<A> getBar() { return instanceBar; } My objective is to access instanceBar 's state from a separate class file without a get method and without changing the visibility of firstBar . How do I accomplish this? For example, the following says not visible . public class RetrieveFirstBar { public static void main(String

Are classes private or public by default in Java and C++? zeller Java : By default, the classes visibility is package private, i.e. only visible for classes in the same package. C++ : The class has no visibility defined like in Java. They are visible if you included them to the compilation unit. In Java, a top-level class is either public or non-public. There is no "private". You can only use the public keyword or leave it off. If you leave it off it is non-public, i.e., visible only to other classes in the same package. A nested class, that is, a class inside of another class, can be made

I'm making an SDK and I'm trying to separate classes to different packages, those classes use some other shared classes. The issue is if I made the shared classes public everyone will be able to see them, not only my classes. What's the right way to make them only accessible by my application? Example : Package a MyClass1 Package b MyClass2 Package c public MySharedClass Because c is public MySharedClass will be able to access it, but the issue is that it will also will be visible to the world, how could I prevent that? Create a package that is documented as an internal package, not to be used