Templates in java

Answer:
The normal way to implement template behavior in Java is to create an interface defining the common behavior that is being abstracted. Every class that would normally would be instantiated as a template in C++, would have to implement this interface in Java. A good example of this is the java.lang.Comparable interface in JDK 1.2. You can write a single sort method to sort any object implementing the Comparable interface, rather than writing N different sorts. However, you will find that this approach is not sufficient to achieve all of the benefits of C++ templates. You may consider doing a search on the web for an experimental Java compiler called Pizza, which implements extra functionality like templates.