what is jboss drools

JNDIJava Naming and Directory Interface is an important specification in the J2EE specification. Many experts think that they have not thoroughly understood the meaning and role of JNDI, no real knowledge of J2EE, especially EJB.So what is the role of JNDI?To understand the role of JNDI, we can learn how to do it from the assumption that we do not need JNDI? Afte

Jetty is an open source servlet container that provides a running environment for java-based Web content, such as JSPs and servlet. Jetty is written in the Java language, and its APIs are published in the form of a set of jar packages. Developers can instantiate an jetty container as an object and quickly provide network and web connectivity for some standalone-run (stand-alone) Java applications.This artic

What the IOC is (transferred from Phpxiaoxin) What is the IOC? Inversion of control, or inversion, may be more appropriate for dependency injection. IOC is the IOC, not a technology, like Gof, is a design pattern. Interface driven

." What is the JDBC driver. What is the JDBC URL format. What is the user name and password to access the database. "And so on, programmers should write a program that doesn't have a reference to the JDBC driver, no server name, n

In Java Web Development, different companies, different programmers may adopt different frameworks, the use of different frameworks what is the difference, and what are the benefits? Today, Wuhan Java training experts to take you and big coffee together to learn the essentials:This year I have been thinking about the problem of the separation of the front and bac

What the hell is WebService?Word:WebService is a remote invocation technique across programming languages and cross-operating system platforms. WebService platform TechnologyXml+xsd,soap and WSDL are the three major technologies that make up the WebService platform.Xml+xsd:WebService transmits data using the HTTP protocol, encapsulating the data in XML format (th

JNDIis the Java Naming and directory interface (Java naming and directory Interface), is one of the important specifications in the EE specification, many experts believe that without a thorough understanding of the meaning and role of Jndi, There is no real mastery of the knowledge of the Java EE, especially EJB. So, what does Jndi really do? to understand the r

to Jndi--not the object looking for dependencies from the container, but the container actively passing the dependency to it when the object is initialized without waiting for the object to be requested.Face Tangent--spring provides rich support for aspect-oriented programming, allowing for the development of cohesion through the separation of application business logic with system-level services such as auditing (auditing) and transaction (transacti

. What is the user name and password for accessing the database. "And so on, programmers writing programs should have no reference to the JDBC driver, no server name, no user name or password--not even a database pool or connection management. Instead, these issues are given to the Java EE container for configuration and management, and the programmer only needs to reference these configurations and managem

that we want to request the picture cannot be found.To solve this situation, we came up with a distributed. We set up a picture server to store images. So when we all upload the picture, regardless of which server receives the picture, the picture is uploaded to the image server.An HTTP server needs to be installed on the image server, using Tomcat, Apache, and Nginx.See here you may ask, since we have to choose the HTTP server, why not continue to u

This article describes what is restful and what is the implementation of restful. Simply put, REST refers to a set of schema constraints and principles. Applications or designs that meet these constraints and principles are RESTful.AD:What is rest?REST (Representation State

protocolsCommunication.While the RMI-IIOP protocol uses binary transmission, the efficiency will be fasterBecauseEJB also applies the IIOP protocol of CORBA.Therefore, in the integration of heterogeneous systems, the interconnectivity of CORBA is better.The procedure is roughlyThe server first injects the EJB into the JNDI tree, and then the client's Java program lookup the corresponding name on the JNDI t

, their principlesHow to implement high-performance codeIf you have an interface call with another system, but other systems have not been developed yet, how can you perform unit testing?Which of the following methods can be used to prevent repeated submission?The implementation principle of the database connection pool, how to obtain the connection request, and whether the connection pool destroys or recycles the connection when the connection pool is