java ee 7 tutorial

What is EJBJB is actually the Enterprise Java Beans. EJB is an important part of the Java EE platform. The Java EE platform is a component-based, enterprise-class application architecture that provides multiplelevel, distributed and highthe functional characteristics of the

If you need to develop Java EE under Linux, we need to install the following software: First upload the software to/opt via XFTP520.1 Installing the JDK(1) Extract to/opt(2) Configuring the configuration file for environment variables Vim/etc/profilePress g to switch to the last line, press I to edit, ESC exit, and then enter: qw!, save exit!(3) need to log off the user, environment variables to take e

new Itr (), indicating Itr This class implements iterator interface 4, find ITR This inner class, found rewriting all the abstract methods in iterator 9. Collection Framework (overview and testing of unique functions of the list collection) Overview of the unique features of the A:list collection void Add (int index,e Element) E Remove (int index) E get (int index) E set (int index,e element) 10. Set FRAME (List collection to sto

I. BACKGROUNDat first, each company developed its own components, but in the process of user use, the components of each family are not universal, incompatible. So the Java protocol is proposed, which is a series of standards based on the technology. Java The platform consists of a set of services ( Services ), application interfaces ( APIs ) and protocols, which are fully functional for data processing an

package, preferably on the server, so that the deployment time is lengthened. Fill in the following space with a unique application name, which is equivalent to the unique ID of the application. After the setup is complete, click "Next" button to start copying the application to the appropriate location, the time may be longer, please wait patiently. Set the URL for accessing the Java EE application, f

The author will organize a complete set of learning routes and materials to become a Java EE engineer. Welcome to Peer and netizens subscribe or correct. Not regularly updated. I have been in the software for 7 years Java development, developed ERP,CRM and other application systems and served as a project manager. Tec

another page in a JSP: 1, use the Include indicator ( Method 7: Correctly determine the life cycle of the JavaBean A powerful place for JSP is the support of JavaBean. By using the label in a JSP page, you can insert JavaBean directly into a JSP page. It is used in the following ways: "Package.classname" type= "TypeName" The scope attribute indicates the life cycle of the bean. The default life cycle is page. If you don't choose your

First, SVNSVN server: https://subversion.apache.org/1. What is version control: Versioning is the standard way to maintain a blueprint for a project that tracks the process from birth to finalization. is a system that records changes in several file contents so that a specific revision of the system can be consulted in the future.2. What are the bad things that happen without versioning:(1) Code Management Confusion(2) Backing up multiple versions, consuming large disk space(3) Difficulty in res

class can make public, protected, and default types, but the abstract methods in an interface can only be of the public type, and the default adornment is the public abstract type. 5. Abstract classes can contain static methods, and interfaces cannot contain static method 6. Both abstract classes and interfaces can contain static member variables, and the access types of static member variables in an abstract class can be arbitrary, but the variables defined in the interface can only be public

JavaJavase part1) Be able to master DOS system common basic commands;2) skilled in using Eclipse to write Java code;3) Master common data structures and algorithms;4) Master the commonly used programming design mode;5) Proficient in the use of Java language commonly used objects;6) Use Java to write a stand-alone application;