Hibernate is an open source Java persistence framework project. Perform powerful object relational mapping and query databases using HQL and SQL. In general the widely used libraries are well designed and implemented, and it’s very interesting to learn from them some coding best practices, Let’s take a look inside the hibernate core...

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Groovy is an object-oriented programming language for the Java platform. It is a dynamic language with features similar to those of Python, Ruby, Perl, and Smalltalk. It can be used as a scripting language for the Java Platform, is dynamically compiled to Java Virtual Machine (JVM) bytecode, and interoperates with other Java code and libraries...

Groovy is an object-oriented programming language for the Java platform. It is a dynamic language with features similar to those of Python, Ruby, Perl, and Smalltalk. It can be used as a scripting language for the Java Platform, is dynamically compiled to Java Virtual Machine (JVM) bytecode, and interoperates with other Java code and libraries...

There is a powerful and simple concept in programming that is really underused: Immutability Basically, an object is immutable if its state doesn’t change once the object has been created. Consequently, a class is immutable if its instances are immutable. There is one killer argument for using immutable objects: It dramatically simplifies...

There is a powerful and simple concept in programming that is really underused: Immutability Basically, an object is immutable if its state doesn’t change once the object has been created. Consequently, a class is immutable if its instances are immutable. There is one killer argument for using immutable objects: It dramatically simplifies...

Java 6 was released in 2006 and five years after a major version was released, but no major changes was added to the Java7, many of the new features was present in Java 6 updates. After Java 7 Oracle has decided to implement a two years roadmap planning for Java, and the next major release [...]

Java 6 was released in 2006 and five years after a major version was released, but no major changes was added to the Java7, many of the new features was present in Java 6 updates. After Java 7 Oracle has decided to implement a two years roadmap planning for Java, and the next major release [...]

In the previous article we dicovered some creationel patterns used by JBoss, let’s discover now some structrual design patterns used by it. Structural design patterns are design patterns that ease the design by identifying a simple way to realize relationships between entities. There’s a common point between the majority of these...

In the previous article we dicovered some creationel patterns used by JBoss, let’s discover now some structrual design patterns used by it. Structural design patterns are design patterns that ease the design by identifying a simple way to realize relationships between entities. There’s a common point between the majority of these...

The majority of developers have already heard about design patterns, GOF(Gang Of Four) patterns are the most popularized, and each developer has his way to learn them , we can enumerate: Reading a book or a magazine. From web sites. From a collegue. Doing a training. Regardless of the method choosed, we can learn by [...]

The majority of developers have already heard about design patterns, GOF(Gang Of Four) patterns are the most popularized, and each developer has his way to learn them , we can enumerate: Reading a book or a magazine. From web sites. From a collegue. Doing a training. Regardless of the method choosed, we can learn by [...]

OSGi became very popular today, thanks to its modularity approach and its capability to enforce logical boundaries between modules. When we discover it the first time, the question is where to begin to understand how it works? To understand OSGi concepts we will try to follow the puzzle approach, the idea is to begin with [...]

OSGi became very popular today, thanks to its modularity approach and its capability to enforce logical boundaries between modules. When we discover it the first time, the question is where to begin to understand how it works? To understand OSGi concepts we will try to follow the puzzle approach, the idea is to begin with [...]