Dependency Injection is a fancy word for a very simple design pattern that decouples highly dependent components. The traditional approach for coupling the objects with each other was to hard code the dependency. public interface IEngine { … } public class DieselEngine implements IEngine { … } public interface ICar { … } public class [...]
It seems that when we develop a trait (that includes both abstract and concrete methods) in Scala and compile it, the outcome includes two jave byte code files. The first includes the definition of an interface with an identical name to the one we gave our trait. The abstract methods that interface includes are the [...]
Browsing at http://education.oracle.com/pls/web_prod-plq-dad/db_pages.getpage?page_id=140#13 you can find detailed information about the currently offered Java certifications. There are in total 13 certifications. Most of them require taking an exam only. Some of them require an assignment submission and/or an essay submission as well. The first and the easiest one is Oracle Certified Associate, Java SE 5/SE 6, [...]
I am writing this post for the benefit of my new Java students who have no experience with downloading and installing the JDK. The following video clip includes the detailed instructions you need to follow in order to download and install the JDK. In case that you did not succeed to download and install the [...]
During the 2010 Autumn semester I am going to deliver the Java & Scala Programming course in Shenkar (www.shenkar.ac.il). This course is delivered as part Shenkar’s Software Engineering BSc academic program. It starts with a detailed coverage of the Java SE programming language and continues with a detailed coverage of Scala. The topics we are going [...]
During Spring 2010 I was teaching an academic Java EE course in Shenkar. This course is part of Shenkar’s BSc 4 years academic program in Software Engineering. The course covered various advance topics in Java EE, such as Servlets/JSP, JSP Custom Tags, JSTL, JavaServer Faces, JPA, Hibernate, Jasper Reports, Web Services, EJB, JDBC and more. [...]
The possibility to develop code in Scala and seamlessly integrate it as part of code written in Java allows us to enjoy the power of Scala without throwing away software systems that were already developed in Java. In addition, once specific modules are written in Scala we can at any time compile those modules into [...]
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I am glad to announce about “Introduction to JAAS” new course available for free at www.abelski.com. The JavaTM Authentication and Authorization Service (JAAS) is used to authenticate the user (reliably and securely determine who is currently using the code) and to authorize him (ensure the user has the required permission). This course overviews the authorization and the authentication [...]
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