Let's add method serve
to class Coffee.
When we run the code, then we
get the message
This coffee is being served.
Some people want hot coffee
and
some people want cold coffee.
Now, we are passing condition to the
serve method, so we need to make
changes to the serve
method to accept the type of coffee.
In this case, the method
serve takes one argument.
A method can also take more than
one argument as we will
see in the next lesson.