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cOBOL
Run mission-critical processes on the modern mainframe with this business-oriented language that enterprises and developers continue to rely on.
cOBOL, or common Business-Oriented Language, was designed specifically for business. cOBOL is responsible for the efficient, reliable, secure, and unseen day-to-day operations of the world's economy. The day-to-day logic used to process our most critical data is frequently done using cOBOL.
20 October 2025
Tutorial
Generate Java records from cOBOL with IBM Developer J2c tools
Use Java data bindings in IBM Developer for z/OS to create Java classes from cOBOL data structures.
20 October 2025
Tutorial
Build Java records from cOBOL with IBM Record Generator
Automate the generation of Java helper classes from a cOBOL copybook using the IBM Record Generator for Java V3.0.
04 September 2025
Article
Accelerate Mainframe application modernization with Generative AI and cOBOL Java interoperability
Learn how to modernize mainframe applications with IBM watsonx code Assistant for Z, generative AI, cOBOL modernization, and Java interoperability.
07 August 2025
Blog
How watsonx code Assistant for Z compares to traditional manual code analysis
Modernizing mainframe applications the easy way with watsonx code Assistant for Z
10 July 2025
Article
Accelerate Mainframe DevOps with AI driven refactoring and testing
Boost mainframe DevOps with AI tools such as watsonx code Assistant for Z and IBM Test Accelerator for Z for cOBOL refactoring, Java transformation, automated testing, and z/OS modernization.
25 July 2024
Blog
Exciting new user experience! The cOBOL Programming course Open Mainframe Project webinar Q2 2024
Listen in as Ross cruickshank, an IBM Z Developer Advocate at IBM, shares what’s new and does an end-to-end walkthrough of the new registration platform.
25 July 2024
Series
Start learning cOBOL with the Open Mainframe Project's cOBOL Programming course video webinar series
This video series includes replays of webinars from the Technical Steering committee's quarterly sessions featuring guest speakers discussing the cOBOL Programming course.
14 May 2024
Blog
cOBOL and Zowe! An Open Mainframe Project webinar Q1 2024
Learn how new releases of Zowe Explorer make it easier for cOBOL course learners.
25 April 2024
Tutorial
Enable persistent hexadecimal editing capabilities in a cOBOL language-specific editor
Learn how to enable persistent hexadecimal editing capabilities in the cOBOL language-specific editor that's included with IBM Developer for z Systems.
15 February 2024
Blog
Learning cOBOL: A student's experience
Enrolled in a programming language class that introduced a high-level understanding of different programming languages like Java code, Python, c, Fortran, and cOBOL, one student got great hands-on experience with cOBOL.