A question about interface

[Tony Johansson]

Hello!

I'm readaing a book about Inteface and it says the following.
"Only constant fields(public,static and final) are allowed in an interface.
The public, static and final key words may be
omitted, but alla fields are still treated as public, static and final."

Does this mean that every declaration of fields in an interface have the
following only form
public static final meaning no other decarations are allowed.

//Tony

[Casper B]

> Does this mean that every declaration of fields in an interface have the

following only form
public static final meaning no other decarations are allowed.

Yes, because you can never instantiate an interface. An interface is
only a contract that you agree to follow in your class. Often constants
belonging to the business logic of the interface are included as a
pseudo-enumeration.

/Casper

[Hal Rosser]

"Tony Johansson" <jo*****************@telia.com> wrote in message
news:mq*******************@newsb.telia.net...

Hello!

I'm readaing a book about Inteface and it says the following.
"Only constant fields(public,static and final) are allowed in an interface. The public, static and final key words may be
omitted, but alla fields are still treated as public, static and final."

Does this mean that every declaration of fields in an interface have the
following only form
public static final meaning no other decarations are allowed.

//Tony

That's right
public - can be accessed from other classes
static - belongs to the class - not to a specific instance
final - (constants - can't change )
its a good thing - not a limitation