In of this three-part series introducing design patterns ... for new Java developers is that the Gang of Four patterns spring from object-oriented programming, with examples based on C++ and ...

We discuss some of the most common design ... Pattern restricts the instantiation of a Class and ensures that only one instance of the class exists in the Java Virtual Machine (JVM). The ...

EJB Design Patterns goes beyond high-level design pattern descriptions into critical EJB-specific implementation issues ... JUnit testing strategies, using Java Data Objects (JDO) as an alternative to ...