Method parameters are separated by commas.
Parameters are converted to these larger or equal types (int, long, double).
If you have a main method, it must be declared
public static void main(String args)
To decide which method to call, Java looks at the method signature (method name, type and
order of the parameters). The signature of the caller and celled method must match. The
signature does not include the return type, or parameter names.
If a method does not return a value, there is no need for a return statement. If a method
returns a non-void value, it must use a return statement.