What is Java Servlet?
What is Java Servlet?
jakarta-ee
Session TimeOut in web.xml
To set a session-timeout that never expires is not desirable because you would be reliable on the user to push the logout-button every time he’s finished to prevent your server of too much load (depending on the amount of users and the hardware). Additionaly there are some security issues you might run into you would … Read more
javax.naming.NameNotFoundException
I am getting the error (…) javax.naming.NameNotFoundException: greetJndi not bound This means that nothing is bound to the jndi name greetJndi, very likely because of a deployment problem given the incredibly low quality of this tutorial (check the server logs). I’ll come back on this. Is there any specific directory structure to deploy in JBoss? The internal structure … Read more
Definition of a Java Container
Referring more generally to the Container pattern (of which an enterprise Java container could be considered a specialization), the book Server Component Patterns by M.Volter, et al. offers the following: [A CONTAINER provides] an execution environment that is responsible for adding the technical concerns to the COMPONENTS…Conceptually, it wraps the COMPONENTS, thus giving clients the … Read more
What is the difference between JSF, Servlet and JSP?
JSP (JavaServer Pages) JSP is a Java view technology running on the server machine which allows you to write template text in client side languages (like HTML, CSS, JavaScript, ect.). JSP supports taglibs, which are backed by pieces of Java code that let you control the page flow or output dynamically. A well-known taglib is JSTL. JSP also supports Expression … Read more
JaxbRepresentation gives error “doesnt contain ObjectFactory.class or jaxb.index”
JaxbRepresentation gives error “doesnt contain ObjectFactory.class or jaxb.index”
What’s the difference between JPA and Hibernate?
I understand that JPA 2 is a specification and Hibernate is a tool for ORM. Also, I understand that Hibernate has more features than JPA 2. But from a practical point of view, what really is the difference? I have experience using iBatis and now I’m trying to learn either Hibernate or JPA2. I picked … Read more
