The return type of all ejbCreate methods is the type of the bean's primary key. Optionally, you can initialize the bean with a unique primary key and return it. If you rely on the container to create and initialize the primary key, return null. ejbPostCreate The container invokes this...
The physical capacity of the server (storage, memory, and computing power) The quality of the server and its performance. (throughput, latency, and low memory use) The application tiers. (Different types of applications are deployed on the server.) The platform that is supported. The operating...
Popular object-relational mapping (ORM) frameworks include Hibernate, TopLink and DataNucleus. While each framework has its own set of unique capabilities, all of them comply with the Java Persistence API standard, which is now part of the Java EE/Jakarta EE specification. History of Hibernate ...
Apache Tomcat server is the go-to servlet container for Java web applications — with good reason. Its lightweight yet robust functionality and ease of configuration make it fast to learn and deploy on your own systems. The sheer volume of support available continues to grow as more developers ...
catch(Exception) isa bad practicebecause it catches all RuntimeException (unchecked exception) too. This may be java specific: Sometimes you will need to call methods that throw checked exceptions. If this is in your EJB / business logic layer you have 2 choices - catch them or re-throw th...
The type of state that is saved does not include resources. The container invokes the ejbPassivate method within the bean to provide the bean with a chance to clean up its resources, such as sockets held, database connections, and hash tables with static information. All these resources can ...
If you're writing a Java EE Web or EJB application, then using the JMS 2.0 simplified API is even easier than in Java SE. This is because you can now "inject" theJMSContextinto your code and leave it to the application server to work out when to create it and when to close it. ...
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Spring's auto-configuration and convention-over-configuration approach make it well-suited for building modern, scalable web applications. When should you choose Java EE It is an excellent choice for developing enterprise software, websites, web software, and EJB applications. This technology allows ...
Integration with Java EE:JSF integrates seamlessly with the Java EE ecosystem, leveraging other Java EE technologies and services, such as CDI (Contexts and Dependency Injection) and EJB (Enterprise JavaBeans). MVC Design Pattern:JSF adheres to the MVC design pattern, facilitating a clear separatio...