prototype design pattern real world example

Subject GetProxy () {proxy = new proxy (this); return this.proxy; Private Boolean IsProxy () {if (This.proxy = = null) {return false; }else{return true; }} package Mustproxy; public class Proxy implements subject{private Subject realsub = null; Public Proxy (Subject realsub) {this.realsub = realsub; public void DoSomething () {this.realSub.doSomething (); Public Subject GetProxy () { return this; }} package Mustproxy; public class Client {public static void main

Single case mode The following is an example of using a single example pattern in Java public class businessbll{ private static BUSINESSBLL BUSSINESSBLL = null; private context; Public Businessbll { This.context = context; } public static BUSINESSBLL GETBUSINESSBLL { if (BUSINESSBLL = = null) {

substitution in the past will have no effect).In fact, I really look forward to the parent class override the Grandfather class interface method, and then, the grandson class again override the parent class's method, seems to have rarely this usage.Spring uses this kind of factory model, it should be the most complex abstract factory model , inheritance tree, product family What, really good complex.Back to the beginning of the demand, in fact, if only to launch a simple HTTP request, with the

past will have no effect).In fact, I really look forward to the parent class override the Grandfather class interface method, and then, the grandson class again override the parent class's method, seems to have rarely this usage.Spring uses this kind of factory model, it should be the most complex abstract factory model , inheritance tree, product family What, really good complex.Back to the beginning of the demand, in fact, if only to launch a simple HTTP request, with the factory method mode

Singleton design pattern: Resolves a class that only has one object in memory.(1) Want to ensure that the object is unique.A) to avoid excessive creation of such objects by other programs. Prevent other programs from setting up this type of object firstb) Also for other programs to have access to the class object, in this class, you can customize an object.c) To facilitate the access of other programs to cu

This article mainly introduces the example explanation of the factory pattern in JavaScript design pattern, the friend who need can refer to the following JavaScript Factory Way original nbsp; because the properties of an object can be dynamically defined after the object is created, this code, similar to the followi

" static Let shared = Swiftsingleton () } var single1 = swiftsingleton.shared var single2 = swiftsingleton.shared Single2.name = "2" println ("------->\ (single1.name)") println ("------->\ (single2.name)") Copy CodeThe printing results are as follows: ------->1 ------->2 Program ended with exit code:0 Copy CodeAs can be seen from the above, through the implementation of the struct, we can not guarantee that there is only