COBOL-to-Java Conversion Toolkit for Enterprise Applications

SoftwareMining's downloadable COBOL-to-Java and COBOL-to-C# Conversion Toolkit converts complete enterprise COBOL applications into maintainable Java or C# source code using automated conversion. Enterprise customers and system integrators can download and evaluate the toolkit within their own infrastructure.

The toolkit combines application analysis, dependency reporting, automated conversion, runtime support and functional-equivalence testing. Generated applications can use standard development and DevOps processes and run in the cloud or on-premises.

Supported COBOL Platforms and Technologies


Download COBOL-to-Java and C# Conversion Toolkit | Free Evaluation

How COBOL-to-Java Conversion Works

Complete enterprise applications are analysed, converted, compiled and validated together with their data and platform dependencies.

  1. Application analysis: Programs, copybooks, call relationships, files, databases, batch jobs and online transactions are analysed to define scope and identify missing dependencies.
  2. COBOL conversion: Business logic and copybooks are converted into maintainable Java or C# using predefined, repeatable rules and reusable classes.
  3. Platform conversion: Supported CICS, IMS, DB2, VSAM, KSDS and JCL dependencies are converted or integrated with the target architecture.
  4. Runtime compatibility: SoftwareMining libraries support packed decimals, PICTURE formats, REDEFINES, OCCURS DEPENDING ON, record layouts, program calls and file operations.
  5. Functional-equivalence testing: Generated applications are executed, with files, reports, database updates and transaction results compared against the original COBOL system.
  6. Deployment: Customer-controlled Java or C# source code can use standard development processes and run on AWS, Azure, Kubernetes, private cloud or on-premises infrastructure.

Review the complete COBOL-to-Java and COBOL-to-C# Conversion Toolkit features .


What to Expect from the Converted Application

The conversion process produces a complete Java or C# application, including converted business logic, data structures and components replacing supported COBOL and mainframe services.

  • Maintainable source code: Review side-by-side COBOL-to-Java code examples showing how business logic, data structures and program flow are represented in generated Java.
  • Preserved business behaviour: Calculations, processing sequences, data handling and supported platform operations are converted for validation against the original COBOL application.
  • Modernized platform services: Supported CICS , IMS , DB2 and embedded SQL , VSAM and legacy data , and JCL batch processing dependencies are converted or integrated with the selected target architecture.
  • Functional-equivalence testing: Files, reports, database updates, return codes and transaction results can be compared with outputs from the original application. Review the COBOL-to-Java functional-equivalence testing approach .
  • Performance validation: Batch workloads, online transactions, database access and file processing should be tested using representative production volumes. See the COBOL, Java and C# application performance comparison .
  • Customer-controlled deployment: The converted application can be integrated with existing development processes and deployed on-premises or on the customer's selected cloud infrastructure.


Application Analysis and Dependency Mapping

SoftwareMining identifies programs, copybooks, call relationships and dependencies to support project scoping, estimation and testing.

SoftwareMining COBOL application analysis and dependency mapping
SoftwareMining application analysis and dependency mapping




Run a Live COBOL-to-Java Example

Explore AWS CardDemo converted from CICS COBOL to Java and run the resulting application online.

AWS CardDemo converted from CICS COBOL to Java using SoftwareMining


Run the Live COBOL-to-Java CardDemo