learn j2ee

Figure 6: initial class diagram of the "show installment loan" use case Figure 6 shows the class diagram of the "show installment loan" Use Case. This figure shows the basic roles that implement key requirements, but the classes used in other use cases are not taken into account. To achieve unified analysis and modeling, we need to use the same method to analyze other use cases and then merge the results. At this stage, we primarily aim to identify and exclude duplicate classes and merge

Outline: ========================================== I. Client Interface 1.1 remote interface 1.2 home interface Ii. Instances 2.1 BMP Entity Bean 2.1.1 ejbcreate () method 2.1.2 ejbpostcreate () method 2.1.3 ejbremove () method 2.1.4 ejbload () and ejbstore () Methods 2.1.5 finder Method 2.1.6 Business Methods 2.1.7 database call 2.2 home interface 2.3 remote interface 2.4 deploy the descriptor 2.5 customer Program 2.6 deployment and operation ========================================== Body: ===

In the past, I have been engaged in j2se embedded development, and occasionally developed some j2se desktops, that is, I have never done J2EE development. Today, open the recruitment website and search for Java jobs. Nine of the 10 jobs are J2EE development, and the other is Java Development on mobile phones, I feel that I have been abandoned by the times. I have always hoped that I would be more comprehe

. Then I studied MOM4J, OpenJMS, Mocki, HSQLD ...... We found that this is the implementation of J2EE! It turns out that the software is so complicated that it will actually do so .... How can norms and implementations be integrated? Through the above research, we found that there are too many ideas and too many similarities behind J2EE! These similarities are the concept behind it-design patterns! (Fortuna

technology, refer to J2EE Portal technology. Basic Web tutorial Servlet is a small service written in Java. You must be familiar with Java and understand HTML. Before learning Servlet, you must install J2SDK and a server that supports Servlet. We recommend that you use Tomcat or Resin. We recommend that you use the Building Java HTTP servlets (Chinese) Tutorial to learn Servlet. In addition, Building serv

Some people often ask me which books should be read by new users and how to learn J2EE well. In fact, each person's learning method is not necessarily suitable for another person. Here I will illustrate my learning path and hope to provide some reference. (Declaration: I will not talk about the first object-oriented ideology here. I think the reality is like this. I often talk about it with beginners, that

If the above learning process is relatively smooth, the difficulty increases sharply. Because the above knowledge only involves one aspect, and Core J2EE specifications such as EJB, JMS, and JTA are often the result of the comprehensive application of several Java technologies, therefore, it is difficult to master.First, you must learn the JNDI. The JNDI is the method used by the App Server to locate Server

J2EE (Java 2 Platform Enterprise Edition) is a middleware technology hosted by Sun. The middleware technology has gone a long way from CORBA and IDL to message-oriented systems. Today, J2EE is a decisive milestone in the history of middleware technology, it is receiving increasing attention and adoption from the industry. To put it simply, J2EE is a standard mid

Learn the java knowledge required for J2EE-general Linux technology-Linux programming and kernel information. The following is a detailed description. I have sorted out some of my learning experiences on j2ee, and I am about to look for a job. I also want to see what other aspects I have not mastered! I. Basic java syntax! I am mainly talking about

I think everyone is familiar with J2EE. It seems that javaee is more popular nowadays. No matter how the name changes, the core and thinking are not changed. To learn about J2EE, we must first understand its specifications. Let's take a look at its 13 specifications. 1. JDBC (Java database connectivity) Java APIs used to execute SQL statem

J2ee doc Configuration Guide Keywords: Java Disclaimer: This document is translated by freehero and cannot be used for commercial purposes without the consent of the author. You can freely copy and disseminate it. This document is only for your understanding of j2ee. Due to the limited author's ability, it is recommended that you read the English document at the same time, the author is not responsible for

This article demonstrates the series of Rational tools used in distributed, J2EE-based projects.Article(As listed below. Part 1: Project Introduction and high-level planning Part 1: risk management and demand management 第 3 部分: 模型创建和访问控制；需求分析--> Part 1: model creation and access control; Requirement Analysis 第 4 部分: 用例细化；产成报告；工具和技术选择--> Part 1: Refined use cases, production reports, and selection of tools and technologies

The following statements are taken from the network articles and summarized and merged by yourself.J2EE hierarchy Early network systems were often designed with a three-tier structure. The most common structure is the presentation layer, domain layer, and infrastructure layer. The N-layer structure is proposed to adapt to the current needs of developing Web applications in B/S mode. The traditional brown model refers to: presentation layer (presentation), control/mediation layer (Controller/medi

J2ee specification-EJB, 1. What is EJB? The core of business software is its business logic. Business Logic abstracts the entire business process and uses computer languages to implement it....... J2EE extracts the business logic from the client software and encapsulates it in a component. This component runs on an independent server. The client software calls the services provided by the component t

In order not to complicate the problem, we will use the most important 12 J2EE best practices ...... Best practices 1. Always use the MVC framework.2. apply automatic unit testing and test management at each layer.3. develop according to the specifications, rather than the application server.4. Plan to use J2EE Security from the very beginning.5. create what you know.6. Always use session facades when usi

1. Introduction This article describes the configuration of the J2EE environment. All the files involved are in the oncfig directory under the J2EE installation directory. These files are all text files, You can have any text editor to edit them.Normally, you do not need to change these files. However, if the database driver you are using is not cloudscape, you need Configure according to the content in th

Aside: a few days ago, the author's question and worries about a JavaFans were welcomed. Thank you very much! This article is titled "question and worry", which is naturally due to the anxiety generated by the author during his learning process. Therefore, we look forward to your insights to clarify your thoughts and strengthen your faith. In fact, the author is mainly engaged in maintenance work, programming is just a hobby, coupled with a half way out of the house, so I would lik

Oo Thinking Often see a lot of people complain about the configuration of Java ee/j2ee too complex, cumbersome, not easy to learn, in fact, the so-called simple and easy to learn depends on whether you have OO thinking mode. Presentation layer interface form is usually some discrete data, that is, a single field data, through struts and other frameworks to prov

I have been sorting out and reviewing J2EE notes recently. Although I have read the J2EE video, I am still familiar with reading my notes, when I really understand a certain concept, I rubbed my notes with my previous video impressions. The main content of J2EE is the specifications, and then I am clear about the concepts, at this stage, the goal is not to master

J2EE is an open, standard-based development and deployment platform for building N-layer, web-based, server-side computing-centric, and modular enterprise applications. J2EE is also the unified identifier of all J2EE-compatible Application Server products. Sun leads the formulation of J2EE specifications and standards.