When do we need the template design pattern? The template design pattern is useful when different components share some functionality and adding a change to one would need duplicate changes in the other component. How do we implement the template design pattern? The template design pattern is a...

Java generics is a powerful feature introduced in JDK 5.0 that was directed towards improving the quality of code through abstraction. It aims to improve code reusability by providing a mechanism to write classes and functions in such a way that types can be passed...

So what is a singleton? In a simpleton’s language, a singleton is a class that will be instantiated only once. This essentially means that there will be only one instance of the Java class in the Java Virtual Machine (JVM). The singleton was initially proposed...