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I would like to know what the @interface in objective C is? is it just where the programmer want to declare the variables, class name or method names...? I am not sure whether it is like interface in Java. And about the @protocol in objective C as well. It seems like the interface in Java more. Could anyone give me detail explanation please. I truly appreciate it.
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Some low level protocols are TCP, UDP, IP, and ICMP. Some familiar examples of application layer protocols, built on these lower protocols, are HTTP (for accessing web content), SSH, TLS/SSL, and FTP. Port: A port is an address on a single machine that can be tied to a specific piece of software.
A protocol is a set of rules for communication within a layer. A service is what the layer provides to the layer above it through an interface.
A communication protocol is a system of rules that allows two or more entities of a communications system to transmit information via any kind of variation of a physical quantity. The protocol defines the rules, syntax, semantics and synchronization of communication and possible error recovery methods.
A network interface is the point of interconnection between a computer and a private or public network. A network interface is generally a network interface card (NIC), but does not have to have a physical form.
An interface is where you define the attributes and operations of class. You must set out the implementation too.
A protocol is like an interface for java.
e.g.
@protocol Printing -(void) print; @end can be implemented
by declaring (confusingly in the interface)
@interface Fraction: NSObject <Printing, NSCopying> { //etc.. The confusing thing for java developers is that the curly braces {} are not the end of the interface e.g.
@interface Forwarder : Object { id recipient; } //This is not the end of the interface - just the operations - (id) recipient; - (id) setRecipient:(id) _recipient; //these are attributes. @end //This is the end of the interface If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
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