scope of private constructor in Nested Class

Question

This is more of a puzzle than question. I have the following code:

public class PrivateBaseConstructor {
    public static class BaseClass {
                


        

Answer 1

Because nested classes can see each others members. This has nothing to do with the static declarations. See the following example of your code with just nested inner classes (not static).

public class PrivateBaseConstructor {
    public class BaseClass {
        private BaseClass() {}
    }

    public class DerivedClass extends BaseClass {
        public DerivedClass() {
            super(); // 1*
        }
    }

    public static void main(String[] args)
    {
       new PrivateBaseConstructor(). new DerivedClass();
    }
}

Read more about nested classes here: http://docs.oracle.com/javase/tutorial/java/javaOO/nested.html