Java's default constructor lets developers create instances of classes when an explicitly defined constructor does not exist. Here's how it works.

Developers who create a runnable Java class, be it for a ‘Hello World’ demonstration or to kick off a fully featured enterprise application, will enjoy the following technical benefits when using ...

Must qualify the allocation with an enclosing instance of type GameTree (e.g. x.new A () where x is an instance of GameTree). GameTree.java line 146</pre> ...

Got it. How about classes that permit multiple instances? Take Java's Calendar and DateFormat classes (but oddly not their GregorianCalendar and SimpleDateFormat classes).

Java would become easier for students to learn under a proposal to introduce flexible main methods and anonymous main classes to the language.