Object-orientation - a concept inextricably linked with modern programming languages such as Java or C++. But did you know that even the senior citizen of programming languages, Cobol, can be object-oriented?
In fact, Cobol has been continuously enhanced and adapted to new requirements throughout its long history. With the introduction of object-oriented extensions in 2002, new possibilities opened up for Cobol as well.
Object-Oriented Concepts in Cobol
Classes and Objects: As in other object-oriented languages, classes can be defined in Cobol that serve as blueprints for creating objects. These objects encapsulate data and functions.
Inheritance: Cobol supports inheritance, meaning classes can inherit and extend properties and methods from other classes.
Polymorphism: Polymorphism is also possible in Cobol, meaning objects of different classes can react differently to the same message (method call).
Practical Examples
Modernization of Banking Systems: A classic example is the modernization of Cobol-based core banking systems. By introducing object-oriented concepts, complex business processes such as account management or lending can be made clearer and more flexible.
Integration with Java: Cobol programs can be more easily integrated with Java applications through the object-oriented extensions. For example, modern user interfaces can be connected with existing Cobol backends.
Advantages of Object-Oriented Cobol
Improved Code Quality: Object-orientation promotes code reusability and reduces redundancy, leading to higher code quality.
Increased Flexibility: Adjustments and extensions to programs are easier to implement due to the object-oriented structure.
Better Integration: Interoperability with other, modern programming languages is improved.
Conclusion
Object-oriented Cobol may seem unusual at first glance, but it offers tangible benefits for modernizing and further developing Cobol applications. It enables the use of modern software development principles and paves the way for integration into contemporary IT landscapes.
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