Singleton Pattern is an OOPS design pattern which is used when the requirement is to ensure that a class has only one single instance operating in the entire lifespan of the application. Effectively, the class has only one instance and... Continue Reading →
Concept - The new enhancement framework allows modification of a standard class to achieve the expected business functionality which goes beyond the older framework. It is a marriage of the modifications strategy and the classic enhancement strategy extended to new... Continue Reading →
In the normal course of processing in ABAP, sometimes there is an interruption which raises an exception. Best practices dictate that the exceptions should be properly handled. These exceptions are either triggered by the runtime environment or at times is... Continue Reading →
Polymorphism literally means multiple forms. In world of SAP, it stands for implementation of different methods of different subclasses inherited from a same parent behaving differently. It facilitated same functionality on different objects resulting in different results. Let’s get back... Continue Reading →
Abstract Class – One-line definition of the abstract class is that it is a class which cannot be instantiated. What does that mean? Remember the example of Vehicle. The superclass Vehicle and subclasses two wheelers, light four wheelers and heavy... Continue Reading →
A subclass can either use a method of its own or can redefine a method that is being originally defined in super class or can use a method of the superclass without redefining it. First one is a typical use... Continue Reading →
As the name suggests, Inheritance means inheriting properties of a parent class by a child. The child class inherits – attributes and methods – of its parent class while reserving the ability to enhance itself with additional attributes and methods.... Continue Reading →
Subroutines are obsolete. It might come to you as a surprise but it’s true. Every old school programmer loves them and understandably so. But their days are numbered and rightly so. The world writes in Object Oriented Programming and the... Continue Reading →
Constructor is probably one of the most intricate concept in OOP which befuddles the novices. Confession; I had a difficult time understanding it. Constructor is a special type of method used to define properties of an object. For example, Jack... Continue Reading →
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