Classes usually consist of two things:
instance variables and methods.This is the general form of a method:

type name(parameter-list) {
// body of method
}

Here, type specifies the type of data returned by the method. This can be any valid type,
including class types that you create. If the method does not return a value, its return
type must be void. The name of the method is specified by name. This can be any legal
identifier other than those already used by other items within the current scope. The
parameter-list is a sequence of type and identifier pairs separated by commas. Parameters
are essentially variables that receive the value of the arguments passed to the method when
it is called. If the method has no parameters, then the parameter list will be empty.
Methods that have a return type other than void return a value to the calling routine
using the following form of the return statement:

return value;

Here, value is the value returned.