Method Overloading

If two methods of a class (whether both declared in the same class, or both
inherited by a class, or one declared and one inherited) have the same name
but different number or types of parameters, then the method name is said to 
be overloaded. 

Static Members and methods
--------------------------

If a member is declared static, there exists exactly one copy of the
field, no matter how many instances (possibly zero) of the class may
eventually be created.  If a method is declared static, then it can
be called without reference to a particular object.  They are also
called _class member_ and _class method_.

We use static members to associate data that is common to the entire
class.  For example, we can associate a counter to keep track of how
many instance of this class has been created.  Static methods can be
used when the method does not need to use any member in a object. 
For example, the sin/cos function in Math class.

Who is responsible ?
--------------------

Depends on what causes the failure.  

If the failure is caused by the ignorant user, then the user is responsible.
E.g :
- "Mmm.. I wonder what does format do ?"
- "This cup holder looks pretty cool !. Wow. It can play CDs too"

If the failure is caused by programmer, then the programmer is responsible.
For example, if (a = b) instead of (a == b).

Designers are responsible for design fault that causes failure. Like :
"Hey, let's use two digits to represent the year. That would save us 2 bytes"

Computer hardware failure should be blamed on the hardware, or the hardware
vendors.  For instance, harddisk failure, dead mouse.