java design patterns pdf

Ref:http://www.cnblogs.com/maowang1991/archive/2013/04/15/3023236.htmlDesign mode (Patterns)--the basis of reusable object-oriented softwareDesign patterns are a set of reusable, most known, categorized purposes, code design experience Summary. Design patterns are used in or

restrict collaboration between objects, which in fact provides greater freedom. It actually prescribes a protocol in which classes that implement this interface must adhere to this protocol. Then no matter how the implementation class changes, as long as it complies with this protocol, then the interface does not need to change. Implementation classes can provide empty implementations (stubs), such as WindowListener and Windowadapter Interfaces can be used to declare constants SummaryTh

principle) (Demeter Principle)Why is it called the least known principle, that is to say: an entity should be as small as possible interaction with other entities, so that the system function module is relatively independent.3.6. Synthetic multiplexing principles (Composite reuse Principle)The principle is to use composition/aggregation as much as possible, rather than using inheritance. 4. SummaryIn the Java object-oriented programming language, dif

Design Patterns are a set of reusable, most known, categorized purposes, code design experience Summary. Design patterns are used in order to reuse code, make code easier for others to understand, and ensure code reliability. There is no doubt that

, adorner mode, agent mode, appearance mode, bridging mode, combination mode, enjoy meta mode. There are 11 types of behavioral Patterns: Policy mode, template method pattern, observer mode, iterative sub mode, responsibility chain mode, Command mode, Memo mode, state mode, visitor mode, mediator mode, interpreter mode. There are two other types of concurrency: concurrent and thread-pool mode. Use a picture to describe the whole: Second,

mentioned in the Introduction are examples of stream processors. 1. modifier mode: in the hierarchical structure represented by inputstream, outputstream, reader, and writer, some stream processors can play a decorative role on other stream processors to form a new one, stream processor with improved features. The modifier mode is the overall design mode of the Java I/O library. This principle complies wit

specific.4. Interface Isolation principle (Interface segregation Principle)This principle means that using multiple isolated interfaces is better than using a single interface. or a reduction of the coupling between the class meaning, from here we see, in fact, the design pattern is a software design ideas, from the large software architecture, in order to upgrade and maintenance convenience. So there are

[Practical Java high concurrency programming design 4] Arrays can also be unlocked: AtomicIntegerArray, java concurrent programming practice pdf In addition to providing basic data types, JDK also prepares arrays and other composite structures for us. The available atomic arrays include AtomicIntegerArray, AtomicLongAr

meaning, from here we see, in fact, the design pattern is a software design ideas, from the large software architecture, in order to upgrade and maintenance convenience. So there are multiple occurrences: reducing dependency and reducing coupling .5, Dimitri Law (least known principle) (Demeter Principle)Why is it called the least known principle, that is to say: an entity should be as small as possible in

We found that design patterns are very popular in the Java community, but not so much in the C + + community, or even a bit of exclusion, what causes this difference. (1) C + + memory needs to be managed by itself, so some patterns are not easy to use in C + +, but Java doe

Design mode (Patterns)--the basis of reusable object-oriented softwareDesign patterns are a set of reusable, most known, categorized purposes, code design experience Summary. Design patterns are used in order to reuse code, make c

used in programming, but more commonly used is the inclusion ("has a"), which, broadly speaking, can even be thought of as an adapter pattern. Can be included without inheritance, because inheritance introduces complexity on the inheritance system.Polymorphism is an override based on inheritance, plus a reference to a parent class variable to a child class object. You can think of polymorphism as a small step in Java, a static type language, to a dyn

With the basics of many of the previous design patterns, here you can propose a more specific pattern of MVC. MVC is not part of Gof's 23 design patterns, but it was presented as an important example in Gof's book and was highly rated. Generally speaking, we think that the 23 models of GOF are some intermediate mode, u

objects. When the system is running, objects are not orphaned, they can accomplish some complex functions by communicating and collaborating with each other, and one object at run time will also affect the operation of other objects.This is finally a little bit clear.2. Design Pattern DivisionThe content of this blog is still very little, the intention of the six principles also written in this blog, and finally found that the six principles are very

1. What is design modeDesign patterns provide a solution to common application design problems. In object-oriented programming, design patterns typically address issues related to object creation and interaction, rather than the large-scale problems faced by the overall soft

extensible and does not make it easy to add and remove new controls.It is now refactored using Dimitri. In this example, you can reduce the coupling between interface controls by introducing an intermediate class (mediator) that is designed to control the interaction of interface controls. After the intermediate class is introduced, the direct reference is no longer occurring between the interface controls, but instead the request is forwarded to the Intermediate class and the interm

appears some problem solution. However, we generally refer to the design pattern, usually refers to the Gof classic book, "Designing Pattern--elements of the reusable object-oriented Software," the 23 patterns, thus, It is the specific needle for object-oriented software design process. In the overall sense, the pattern represents a language, a documented exper

The design pattern is a set of repeated use, most people know, after the purpose of classification, code design experience Summary. Design patterns are used for reusable code, making the code easier for others to understand. Ensure code reliability. There is no doubt that design