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Builder mode
Separating the construction of a complex object from its representation allows the same build process to create different representations.
OverviewWhen the system is ready to provide users with an internally c
Complex objects:Public interface Part {}Let's see how to call the builder pattern:ConcreteBuilder builder = new ConcreteBuilder ();Director Director = new Director (builder);Director.construct ();Product Product = Builder.getresult (); The application of builder mode in
Interface Product {}Parts of Complex objects: Public Interface Part {}Let's see how to call the builder pattern:Newnew= Builder.getresult ();Application of Builder ModeIn Java practical use, we often use the concept of "pool", when the resource provider is unable to provide sufficient resources, and these resource
Product GetResult () {
Return final assembly finished result
};
}
Complex objects: Products Product:
Copy Code code as follows:
Public interface Product {}
Parts of Complex objects:
Copy Code code as follows:
Public interface Part {}
Let's see how to invoke the builder pattern:
Copy Code code as follows:
ConcreteBuilder builder =
as a software integrated circuit element, which has the following characteristics:
· Software IC does not have the natural polymerization of hardware IC, which is free of size and easy to expand.
· Establishing an intelligent interoperability mechanism and language independence between institutions by setting up a unified binary standard;
· External access to components only through the interface;
· Mu
powerless. For large-scale complex software systems, software architecture has become significantly more important than the algorithms and data structures of the program. In this context, people recognize the importance of software architecture, and that the software architecture system, in-depth research will be to i
Configure the server environment:
Step 1: Create a Java class called by the flex application. The application in this article uses the simplecustomerservice class, and the method of this class is namedgetAllCustomers(), Will be called in the flex application:
public class SimpleCustomerService { public ArrayLis
It has been used more than C + +. Recent things have written a small program in Java. Find Java Toolkit A lot and easy to find, C + + Desktop Application Toolkit is not good.Java adds the external jar package to the project's BuildPath, C + + needs to compile the DLL or compile the source code together.Java operations Excel file read and write, XML read-write, ta
OS: centos
Centos is an enterprise-level Linux version,Source codeBased on Redhat Enterprise Linux.
Link: http://www.centos.org/
Database: MySQL, PostgreSQL, intergre
MySQL is the most well-known open-source relational database server. It is often used in Web applications with high performance requirements and has good concurrency performance.
MySQL is easy to use and is suitable for beginners.
Link: www.mysql.com
PostgreSQL is also a well-known open-source relational data
One, share = free?
Along with the internet, the "Sharing + registration" model is increasingly becoming the main means for programmers to release their own software, but the resulting means of cracking more and more sophisticated. How to protect the fruits of their labor not to be violently cracked or modified? Using MD5 Digest value validation is a very common method.
MD5 as a public algorithm, the implementation of many methods, such as open sourc
implement the function, involving the idea of process-oriented programming! Each of the defined functions is interlocking, like a complete line!Process-oriented Programming idea: Pipelining programming idea, in the design process, need to design the whole process#优点:1. Clearer architecture2, simplify the complexity of the program#缺点:1, scalability is extremely poor, so that the process-oriented application scenario is: Do not need to change the
clarify the representations it creates; Provides an interface for obtaining a product, such as a Get method; The role of productRepresents a complex object that is constructed, contains classes that define parts, and assembles those parts into the final product. Example code for Builder modeExample IntroductionBelow will be a message push feature to disguise the builder mode of the
implement two methods required by this interface: one is the construction method (BuildPart1 and BuildPart2) and the other is the return structure method (Retrieveresult). In general, the number of parts contained in the product corresponds to the number of construction methods. In other words, how many parts there are, how many corresponding construction methods.Concrete Builder (concretebuilder) role:As part of this role, there are classes that are
I,
Construction (builder) mode structure diagram
The builder mode hides the product structure and product part construction process from the client, and separates the responsibility for directing the construction process from the responsibility of specific builder parts, achieve responsibility division and encapsulation.
The construction mode creates all parts o
sample code that enables all the policies and rules in the current situation, when common rules are violated in the program, the related prompt information window is displayed:
Strictmode. setthreadpolicy (New strictmode. threadpolicy. Builder ()
. Detectall ()
. Penaltylog ()
. Penaltydialog () // print logcat. You can also locate Dropbox and save the corresponding log through the file.
. Build ());
Strictmode. setvmpolicy (New strictmode. vmpoli
figure3. Code public interface Builder { void Buildparta (); void Buildpartb (); void Buildpartc (); Product getresult (); } //Concrete Build Tool public class ConcreteBuilder implements Builder { Part parta, PartB, PARTC; public void Buildparta () {//Here is the code that specifically constructs Parta }; public void Buildpartb () {//Here is the code specifically for how to build PARTB }; public
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