In the quarter century since Java was first introduced ... to solve some of the problems with Factory and Abstract Factory Design Patterns when the object contains a lot of attributes.

These classes often derive from an abstract superclass ... developer Michael Mahemoff in “GoF Design Patterns: Rapid Learning Tips.” Finally, for the Java developer looking for Java-based ...

The design pattern template method is good example ... Only functional interfaces can use the lambda feature in Java. Abstract classes with only one abstract method cannot use lambdas.