presentation zen design

requires the class "shy" point, try not to publish too many public methods and non-static variables, as far as possible, more introverted, use private, package-private, protected and other access rights It's your own, it's yours.In the actual application of such a method often appears: Put in this class can also, put in other classes also not wrong, how to measure it? You can stick to the principle that if a method is placed in this class, it does not increase the relationship between the c

zhang...i am Qinyi zhang...i am Qinyi zhang...i am Qinyi zhang...i am Qinyi Zhang ...Below, see what the class diagram is, very simple, no inheritance, and so on.In the book, a design method called "Multiple cases Mode" is derived from the singleton model, that is, a class can produce multiple objects, but the number of objects is limited.It is also an example of the emperor, but there are many emperors in this example, and every minister may find a

obtained the object (which takes time), the second thread B is also executing, executing to (Singleton = = null) judgment, then B gets the judging condition to be true, and then continues to run. When A and B both acquire an object, a bug is created.You just need to change the code just like this.public static synchronized Singleton getSingleton(){ if(singleton == null) singleton = new Singleton(); return Singleton; }----------2、需要考虑对象的复制情况，在java中对象是默认不可复制的，若实现了Cloneable接口，并实现了

This "Zen of design patterns" was not easy to get. At that time, I had the honor to ask Qin Xiaobo in the csdn forum. Reading such a classic book cannot be like reading a novel. It is intended to be a pleasure to go around for a long time. It is more about reading and changing questions. Why should we ask every key point. Teacher Qin Xiaobo's language is sometimes humorous and sometimes important. Mr. Qin X

staticpublicclass HumanFactory{ //这里是 publicstaticcreateHuman(Classnull; try{ human = (Human)Class.forName(c.getName()).newInstance(); }catch(Exception e){ System.out.println("人类生产错误"); e.printStackTrace(); } return (T)human;}}2. Upgrade to multiple factory classesWhen we are working on a more complex project, we often encounter an effort to initialize an object, and all product classes are initialized in a factory method, and t

Zen-singleton mode in Design Mode Personal blog this blog address: http://www.sanyinchenblog.com /? P = 233 Singleton mode: Make sure that a class has only one instance, and instantiate it and provide the instance to the entire system. Demo (https://github.com/sanyinchen/UMLDemo) General View (hunger style ): Single sample Common Code Template: public class Singleton{private static final Singleton single

Since the web2.0, web design has moved toward a practical design stage, and more and more designers are noticing "designing for the presentation of information." Fascinated by the time before the black and white gray teacher introduced the "infographic" here for interested students to recommend some useful resources. "Infographic" from the original concept into a

The Presentation Layer can be designed for the System The most direct experience and confidence of customers. Just as people interact with each other, the feeling of first meeting is always unforgettable. A product delivered to the customer. For example, the User Interface (UI) lacks attractive features, the Interface is unfriendly, and the operation is not considerate, even if the performance of this product is very good, the architec

The presentation design is the most important part. If the presentation design lacks the lighting effect, it is equivalent to losing the soul of a person. Therefore, the most important part of the presentation design is the lighti

The Framework Design of the presentation layer is to make a good separation between the presentation layer and the business logic layer. I. MVC Currently, the most advanced Web application frameworks are based on the MVC design pattern. Ii. design the

The presentation layer (presentation Layer) design can give the system customer the most direct experience and the most complete confidence. Just like the acquaintance of people, it is always difficult to forget the first meeting. A product that is delivered to the customer, if the user interface (users Interface,ui) on the lack of attractive features, interface

In the design of enterprise measurement system, many enterprises often do not pay much attention to the data presentation, the following examples illustrate how to design metrics data indicators.For example, the department manager is concerned about the progress of each project in the department and wants to know the progress of each project through the measureme

Article Description: reflection on the form of picture presentation in Web design. A picture is one of the basic elements that make up a Web page. The picture not only can increase the attractiveness of the Web page, convey to the user richer information, but also greatly enhance the user in browsing the Web experience. The display of the pictures is rich and diverse, and different forms of pictu

Product Web design and presentation (PPT) design is actually very different. Because the positioning is different, so we have to consider the user experience there are differences, product design considerations are not introduced here, and PPT speech design, due to the need

Product Web design and presentation (PPT) design is actually very different. Because the positioning is different, so we have to consider the user experience there are differences, product design considerations are not introduced here, and PPT speech design, due to the need

) {Messageformat.format (AAA1, Aaa1array); } System.out.println ("Messageformat" +stopwatch.elapsed (timeunit.milliseconds)); String patternstring= "\\{(" + Stringutils.join (Parametermap.keyset (), "|") + ")\\}"; System.out.println (patternstring); Stopwatch.reset (); Stopwatch.start (); Pattern Pattern=Pattern.compile (patternstring); for(inti = 0; I ) {Matcher Matcher=Pattern.matcher (AAA); StringBuffer SB=NewStringBuffer (); while(Matcher.find ()) {matcher.appendrepla

Userlog class. In this way, other classes can use the Userlog class, and you can test it without an ASP.The implementation of the intercepting Filter pattern has the following advantages and disadvantages:Advantages1. Use event-driven filters. The ASP. NET runtime provides a number of events, which allows the programmer to hook up to the appropriate location to add functionality. This is an advantage because the programmer can assume the current state of the request based on the event. For exam

collected, the Microsoft.NET Framework automatically shuts down the database connection. However, you do not have any control over when to do garbage collection. Therefore, it is a good practice to explicitly close the database connection to make full use of the database connection pool. Note: There are several page processing stages that are not listed here. However, these phases are not used for most page processing scenarios.Implementation methodUsing the Micrisoft.net

Recently, GirdView was used frequently in ASP. Net projects. Therefore, we are ready to design a general data acquisition and presentation model.The details are as follows:(1) requirements:A. The final result is a custom Gridview or Repeater (currently called MyGridView) that supports paging and sorting. The database returns only the data to be displayed.B. You do not need to handle the PageIndexChanged and

framework has some known issues in the Web browser, such as navigation and printing problems.4. Unable to refresh cached pages. The Web page remains in the cache until it expires or restarts the server. This makes the test a problem. In addition, caching can be problematic in situations where the data is rarely changed and, in the event that changes are never delayed. For example, updating the weather forecast every two hours may be sufficient for most of the time. However, if the hurricane is