•
Many objects are connected by each object.
Form a
chain
.
•
request
Pass on this chain until an object on the chain decision
Raise this request.
•
Send this requesting client does not know which object on the chain is most
End handle this request.
•
The responsible chain may be a straight line, a ring chain or even a tree structure
Part.
You can use the example of "drumming flowers".
•
Drum people will pass the flowers to Jiamu and start the flower game. Florists were passed by Jiamu, giving Jia Zheng,
Passing Jiagong to Jia Baoyu, also passed Jia Bao Yu to Jia Ring, transferred back to Jiamu, so reciprocated
(See below). When the drum is stopped, there is a flowers in your hand to perform alcohol.
.
Participant - abstract
•
Abstract class player {
Abstract public void
Handle
(INT I); //
Approach
Private Player Successor, PRIVATE PLAYER SUCCESSOR
;
Public Player () {successor = null;}
Protected Void Setsuccessor (Player Asuccessor) {
Success = asuccessor;
} Public void next (int index) {// transmission method
IF (Success! = NULL) {
Successor.handle (Index);
}
Else {
System.out.println ("Program Terminated.");
}
}
•
Participants - Specific (Jiajia Participants)
•
Class Jiamu Extends Player {
Public Jiamu (Player Asuccessor) {
THIS.
Setsuccessor
(Asuccessor);
}
Public void
Handle
(int i) {
IF (i == 1) {
System.out.Println ("Jia Mu Gotta Drink!");
}
Else {
System.out.println ("Jia Mu Passed!");
NEXT
(i);
}
}
}
Drum boots (client)
•
Public class drumbeater {
Private static Player Player;
Static Public Void Main (String [] ARGS)
{
Player = new
Jiamu
(New
Jiashe
(New
Jiazheng (New Jiabao "
Jiahuan
(NULL))))))))))))))))))))
Player.Handle (4);
}
