Tag Archive: technical interview

May
25

What do polymorphism, encapsulation and inheritance mean in Java?

Polymorphism : it means that an entity can be used under many forms. For example, if we have a method called method(), the polymorphism allows to use it with another implementation like : method(p1) or , method(p1, p2) or any other form using the same name method. This can be helpful for an developer, because he shouldn’t …

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May
24

What’s JEE and which are their APIs?

JEE : Java Enterprise Edition (ex J2EE) is a specification of Java Sun technique for enterprise applications. These apllications are designed in a multi-levels approach. To do this, each implementation of this specification contains a set of  Java Standard framework extensions to make easy the creation of distributed applications. Servlet : Component reprensting the C of MVC paradigm Portlet : Web container (extension …

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May
23

What is Hibernate?

Hibernate is a an object/relational mapping framework, it allows to manipulate data from a relational database as objects. As a framework, it uses many files of mapping and settings.   See also :

May
23

Which are the struts tagLibs?

They are four : Bean : they are useful to define new beans in any scope and from many resources, as well as a tag to render a particular bean or property to the output response. HTML : they are used to create HTML form, and to create a HTML code based user interfaces. Logic …

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May
23

What’s difference between directive and action?

Directive :  it affects the jsp page where it is placed and only this page. Therefore, it affects the entire structure of the resulting servlet. Action : it affects the behavior during the execution of the page. See also :

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