Answer:
No. An interface inclues only constants and method headers.
No. An interface inclues only constants and method headers.
An interface looks like this:
interface InterfaceName
{
constant definitions
method headers (without implementations).
}
A method header is an access modifier, a return type, the method name, a parameter list followed by a semicolon.
The methods in an interface are public by default, so that modifier may be left out.
The methods cannot be private and cannot be protected.
An interface looks somewhat like a class definition. But no objects can be constructed from it. However, you can define a class that implements an interface, and once you have done that you can construct objects of that class.
A class implements an interface by doing this:
class SomeClass extends SomeParent implements interfaceName
{
}
A class extends just one parent, but may implement several inferfaces.
How does a class implement more than one interface?