As technology continues to evolve, companies are faced with decisions about how best to modernize their systems.
One popular project is to convert mainframe COBOL to Java. The move will give you out-of-the-box web functionality and other modernization benefits, but due to key differences between the two programming languages, the process can be challenging.
One of the biggest pitfalls is creating a Java application that looks a lot like the COBOL application it came from, resulting in a new “JOBOL” application that requires you to keep your old COBOL engineers on staff to maintain it.
The key to avoiding that undesired result is to first understand the key differences between the two programming languages and plan your project accordingly.
How COBOL and Java Differ
COBOL and JAVA have been used for decades in the development of software applications. While they both share similarities, there are also some key differences between them.
COBOL is an older language with a syntax focused on readability, while JAVA is a newer language with a syntax that is more concise and versatile.
Additionally, COBOL programs can be difficult to maintain due to their verbosity and lack of modularity, whereas JAVA programs can be quickly updated using object-oriented programming principles.
COBOL does not support web development or mobile app development out of the box like JAVA does (often a key reason for the move).
When considering converting mainframe COBOL to Java for modernization purposes, it’s important to keep these distinctions in mind.
Analyze the COBOL code and identify the areas that need to be converted
It’s always a good idea to measure twice and cut once, so be sure to apply that to your conversion plan.
Before you start the conversion process, analyze the COBOL code thoroughly with CM evolveIT, identify the areas that need to be converted, and plan for any modifications that may be needed.
Conducting a comprehensive analysis can help you understand the various challenges associated with the conversion process and help you develop an effective strategy.
Implement DevOps Pipelines
DevOps pipelines are essential for making the conversion process from COBOL to Java smoother and more efficient. Ensure you have version control ready to go with Git and create an automated build process with the help of continuous integration and deployment tools like Jenkins.
Review and test the converted code rigorously
When you have converted the COBOL code to Java, review and test it rigorously to minimize errors and improve performance. Both manual and automated testing should be done to detect and correct any issues.
Testing should include evaluations of performance, integration, functionality, and security to ensure that the converted code performs as intended.
Document the Java code and provide training for your staff
After the conversion process is complete, document the Java code and provide training for your staff on how to use and maintain it. Documentation should include a description of the system, source code documentation, user manuals, and any necessary configuration files.
Training can help ensure that staff is comfortable using the new system and can solve any problems that may arise.
Plan and execute the conversion process in phases
While it may be tempting to conduct the entire conversion process in one fell swoop, your project will have a better chance at success if you execute the conversion process in phases. Breaking the process down into smaller stages can make it easier to manage, minimize risks, and reduce the likelihood of complications.
Be sure to give each phase a specific objective, deliverables, and timeline, along with a review at the end of each stage.
Meet the Challenge
Converting mainframe COBOL to JAVA can be a challenging process. However, if you follow the best practices we have discussed and use CM evolveIT to analyze your codebase, you can ensure a successful transition.
Conducting a comprehensive analysis, setting up a DevOps pipeline, reviewing and testing the code rigorously, documenting the new system, and planning the conversion process in phases are all critical steps that IT managers should keep in mind. CM evolveIT can help you every step of the way, saving time, reducing errors, and getting you to the promised land of modernization with confidence.
If you’d like to learn more about CM evolveIT code analysis and COBOL to Java conversions, please contact us to learn more about how we can help.
