A class will often have multiple constructors that build new objects in slightly different ways. A constructor is a method that has exactly the same name as the class and has no return type, it is ...

Classes are the most common way to define object types, and most languages that use objects—including Java, Python, and C++—support classes with a similar syntax. (JavaScript also uses ...

Languages like C++ use jump tables for objects associated with classes that have virtual methods, but the object structures put the jump table pointer at the start of the object. This has the ...

You can't forward-declare a nested class, because at the point of declaration the compiler doesn't know whether the inner class is public/protected/private in the outer class.