uml programming examples

inheritance relationships between classes and interfaces. Figure H 650) This. width = 650; "src =" http://pic002.cnblogs.com/images/2012/285763/2012061315050938.gif "style =" margin: 0px; padding: 0px; Border: 0px; "/> 1.1.6 implementation (realization): Expressed by hollow arrows and dotted lines Instance (FigureI) Link specifies a contract between two entities. In other words, one entity defines a contract, and the other entity guarantees the performance of the contract. When modeling Java

Article Source: http://www.cnblogs.com/duanxz/archive/2012/06/13/2547801.htmlThe ways in which the relationships between objects and classes are described in UML include: Dependency (Dependency), Association (association), Aggregation (Aggregation), composition (composition), generalization (generalization), Implementation (realization) and so on. Dependent ( Dependency ): The change of element a affects element B, but the other is not, so the rel

decide whether to carry out. But building walls is a must. If contractor does not smoke and drink, it will not affect the integrity of the walls, but if you drink more, building a house prone to accidents, that is, the implementation of the expansion of the use case changed the behavior of the base case.Generalization "genneralizition": child use cases are similar to parent use cases, but exhibit more specific behavior, and child use cases inherit all the structures, behaviors, and relationship

relationships among classes in UML diagrams: Dependency, generalization, association, aggregation, composition, implementationClass and Class Diagram 1) Class (class) encapsulates the data and behavior, is an important part of object-oriented, it is a collection of objects with the same properties, operations, relationships collectively. 2) in the system, each class has a certain responsibility, responsibility refers to the task of the class, that is,

Java programming common memory overflow exceptions and code examples, java programming overflow examples Java heap is used to store object instances. Therefore, if we constantly create objects and ensure that there is a reachable path between GC Root and the created objects, the objects will not be garbage collected, w

Examples of PHP object-oriented programming methods and js object-oriented programming examples This article analyzes the PHP object-oriented programming method. We will share this with you for your reference. The details are as follows: PHP5 began to support object-oriented

Detailed explanations of Python programming sequence operation examples and python programming examples This article describes the sequence operations of Python programming. We will share this with you for your reference. The details are as follows: # Coding = utf8''' the se

);}Example four: pointer and array relationships. Classic examples#include"stdio.h"intMain () {//Classic example Linux C program on page 85th inta[2][5]={1,3,5,7,9,2,4,6,8,Ten}; int(*p) [5],i;//Int (*p) [5] means p is a pointer to a one-dimensional pointer containing 5 elements, and P is the first address of a one-dimensional arrayp=A; for(i=0;i5; i++) printf ("%d",(*p) [i]); printf ("\ n"); P++;//p plus 1, pointing to the second row of the two-di

Examples of simple factory patterns in PHP design pattern programming, examples explaining design patterns The Simple Factory mode is the creation mode of the class, also called the Static Factory method (Factory) mode. The simple factory model is determined by a factory object to create an instance of that product class. 1. Several forms of the factory modelThe

Examples of Promise asynchronous programming and promise examples The instance is as follows: // 1. solve the asynchronous callback problem // 1.1 how to synchronize asynchronous requests // if there are no pre-and post-order differences between several asynchronous operations, the subsequent tasks can be executed only after multiple asynchronous operations are c

Examples of object encapsulation in JavaScript programming, and examples of javascript 1. prototype object1.1 constructor disadvantagesJavaScript generates new objects through constructors, so constructors can be considered as Object Templates. The attributes and methods of the instance object can be defined within the constructor. Function Cat (name, color) {thi

instance (instance)In object-oriented programming, "class" is called an "instance" after instantiation. "Class" is static, does not occupy process memory, and "instance" has dynamic memory. In a database, represents a collection of programs. As in Oracle, examples are database programs that support the operation of a database. Instances (instance) and objects (object) are essentially synonyms and are often

Float examples and plc programming examplesFloat instance description Float is a powerful attribute. In the actual front-end development process, people often use it for layout. However, sometimes, it is difficult to use it. For example, now we want to implement a two-column layout, with the left column fixed in width, and the right column automatically expanded in width. See: Idea: Use div + float, div1 a

Python network programming details and simple examples, python network programming details Python network programming details The patent right for network programming should belong to Unix, various platforms (such as windows and Linux), various languages (such as C, C ++, Py

Examples of javascript functional programming and javascript programming This example describes javascript functional programming. Share it with you for your reference. The specific analysis is as follows: Javascript can write higher-order functions like other dynamic languages. The so-called higher-order functions can

"| BC #2.0148097777777777777777Echo "4/5"| BC #0Echo " the"| BC #0Echo "6/5"| BC #1The accuracy of the multiplication output is consistent with the longest progress of the phase multiplier. Integer division results are rounded. Of course, it can be assigned a valuevar=$ (echo"|bc") #var =23. Exprfloating-point arithmetic is not supported, note the numbers and spaces in the calculation charactersExpr 1+1#2Expr 1-1#0Expr 1\*1#1Notethe number is preceded by a \, otherwise errorExpr 1/1#1Expr 1+1 #1

(NULL, argv[1], addrlen); else if (argc = = 3) listenfd = Tcp_listen (argv[1], argv[2], addrlen); Else err_quit ("Usage:tcpserv01 [host>] cliaddr = Malloc (Addrlen); for (;;) { len = Addrlen; connfd = Accept (LISTENFD, cliaddr, len); Pthread_create (tid, NULL, doit, (void *) CONNFD); } } static void * doit (void *arg) { Pthread_detach (Pthread_self ()); Str_echo ((int) arg); /* Same function as before */ Close ((int) arg); /* Do with connected socket

PHP programming SSO detailed introduction and simple examples, php programming sso detailed introduction Php sso details SSO has three modes: ① Cross-subdomain single-point login ② full cross-point domain login ③ site group shared identity authentication The first mode is simple. You only need to set the Cookie domain to the root domain of multiple applications.

Simple examples of C ++ multi-thread programming and multi-thread programming C ++ does not provide any multithreading mechanism, but in windows, we can call the SDK win32 api to Write multi-threaded programs. The following is a brief introduction: Function used to create a thread HANDLE CreateThread ( LPSECURITY_ATTRIBUTES lpThreadAttributes, // SD SIZE_T dwSta

PHP object-oriented programming and other constant usage examples, sed usage examples. PHP object-oriented programming and other constant usage examples. sed usage instance constants are very important concepts in PHP object-oriented pro