Only instance data increases the size of instances of a class (in all implementations that I know of), except that if you add virtual functions or inherit from a class with virtual functions then you take a one-time hit for a v-table pointer. Also, as someone else correctly mentions the minimum size of a class … Read more
You can find the complete source code of the native methods here I hope this will work for you. These are native methods, because it has to interact with the machine. Here machine dependent code is written in the C language, which is not coming with the source package or in rt.jar of the lib … Read more
You can instantiate the class by declaring a variable and calling the class as if it were a function: x = mystuff() print x.average(9,18,27) However, this won’t work with the code you gave us. When you call a class method on a given object (x), it always passes a pointer to the object as the … Read more
It’s called static variables and static methods. Just try it and see that it compiles.
Terminology Mental model: A variable stored in an instance or class is called an attribute. A function stored in an instance or class is called a method. According to Python’s glossary: attribute: A value associated with an object which is referenced by name using dotted expressions. For example, if an object o has an attribute … Read more
The solution depends on the answer to the question – are all the parameters going to be the same type and if so will each be treated the same? If the parameters are not the same type or more importantly are not going to be treated the same then you should use method overloading: public … Read more
All method names in C# start with an upper-case letter by convention. All property names do so too. Only private fields, local variables and parameters to methods start with a lower-case letter (AFAIR). It’s a convention so asking for a »why« is a little misplaced. It’s probably akin to asking »Why does the Java coding … Read more
The Interface Principle by Herb Sutter For a class X, all functions, including free functions, that both (a) “mention” X, and (b) are “supplied with” X are logically part of X, because they form part of the interface of X. For in depth discussion read Namespaces and the Interface Principle by Herb Sutter. EDIT Actually, … Read more