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J2EE Server: Transaction Management Security Remote Client Connectivity Life Cycle Management Database Connection Pooling

The J2EE server provides naming, directory, authentication, HTTP, and EJB services. The EJB container runs enterprise bean instances and provides transaction management, security, remote client connectivity, life cycle management, database connection pooling, and handles transactions without requiring code in the enterprise beans through use of deployment descriptor files specifying transactional properties. The container manages complex transaction code so developers can focus on business logic.

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26 views1 page

J2EE Server: Transaction Management Security Remote Client Connectivity Life Cycle Management Database Connection Pooling

The J2EE server provides naming, directory, authentication, HTTP, and EJB services. The EJB container runs enterprise bean instances and provides transaction management, security, remote client connectivity, life cycle management, database connection pooling, and handles transactions without requiring code in the enterprise beans through use of deployment descriptor files specifying transactional properties. The container manages complex transaction code so developers can focus on business logic.

Uploaded by

Prasdhara
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
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Download as DOCX, PDF, TXT or read online on Scribd
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J2EE Server

The J2EE server provides the following services:


Naming and Directory - allows programs to locate services and components through the
Java Naming and Directory InterfaceTM (JNDI) API
Authentication - enforces security by requiring users to log in
HTTP - enables Web browsers to access servlets and JavaServer PagesTM (JSP) files
EJB - allows clients to invoke methods on enterprise beans
EJB Container

Enterprise bean instances run within anEJB container. The container is a runtime environment
that controls the enterprise beans and provides them with important system-level services. Since
you don't have to develop these services yourself, you are free to concentrate on the business
methods in the enterprise beans. The container provides the following services to enterprise
beans:

Transaction Management

Security

Remote Client Connectivity

Life Cycle Management

Database Connection Pooling

Transaction Management
When a client invokes a method in an enterprise bean, the container intervenes in order to
manage the transaction. Because the container manages the transaction, you do not have to code
transaction boundaries in the enterprise bean. The code required to control distributed
transactions can be quite complex. Instead of writing and debugging complex code, you simply
declare the enterprise bean's transactional properties in the deployment descriptor file. The
container reads the file and handles the enterprise bean's transactions for you.

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