Three simple steps
How to use this tool?
This free online converter translates Java source code into COBOL in three simple steps.
- Step 1
Add your Java code
Type, paste, or upload the Java code you want to translate.
- Step 2
Convert the code
Click Convert to translate the source code into COBOL.
- Step 3
Review the result
Review, copy, or download the resulting COBOL code from the output editor.
See it in action
Examples of Java to COBOL conversion
These examples show Java source code and the corresponding COBOL translation. Generated results can vary as AI models are updated.
Example 1
Is String Palindrome
Program that checks if a string is a palindrome or not.
Java code
COBOL code
Example 2
Even or Odd
A well commented function to check if a number if odd or even.
Java code
COBOL code
Language comparison
Key differences between Java and COBOL
| Characteristic | Java | COBOL |
|---|---|---|
| Syntax | Java uses C-style syntax with curly braces and semicolons. | COBOL uses a verbose and English-like syntax. |
| Paradigm | Java is primarily an object-oriented programming language with support for procedural programming. | COBOL is primarily a procedural programming language with limited support for object-oriented programming. |
| Typing | Java is a statically-typed language with strong type checking. | COBOL is a statically-typed language with weak type checking. |
| Performance | Java is known for its good performance due to its efficient bytecode execution. | COBOL is generally slower in terms of performance compared to Java. |
| Libraries and frameworks | Java has a vast ecosystem of libraries and frameworks for various purposes. | COBOL has limited libraries and frameworks compared to Java. |
| Community and support | Java has a large and active community with extensive support and resources. | COBOL has a smaller and less active community with limited support and resources. |
| Learning curve | Java has a moderate learning curve, especially for beginners. | COBOL has a steeper learning curve, especially for those unfamiliar with mainframe systems. |
Common questions
Frequently Asked Questions
How do I convert Java to COBOL?
Paste your Java code into the input box, confirm the languages are set to Java and COBOL, and click Convert. CodeConvert AI analyzes your Java code and generates equivalent COBOL code in seconds, preserving the original logic and structure.
What are the main differences between Java and COBOL?
Java and COBOL differ in syntax, type system, standard libraries, and common idioms, so copying code line for line usually will not compile. The converter maps each Java construct to its closest COBOL equivalent. See the comparison table below for the key differences between Java and COBOL.
Is the converted COBOL code accurate?
The AI produces high-quality COBOL code that preserves the behavior of your original Java code and follows COBOL conventions. It handles common patterns, data structures, and idioms for both Java and COBOL. For large or performance-critical code, review and test the COBOL output before using it in production.
Can I convert an entire Java project to COBOL?
You can convert Java files one at a time by pasting each file's code. For a full migration, convert each file and then review how classes, dependencies, and project structure map from Java to COBOL. Signing in for free raises the input limit to 25,000 characters per conversion for larger files.
Can I convert COBOL back to Java?
Yes. CodeConvert AI converts in both directions, so you can convert COBOL to Java just as easily using our COBOL to Java converter. Try the COBOL to Java Converter
Is the Java to COBOL converter free, and do I need to install anything?
Yes, it is free and runs in your browser with nothing to install and no IDE extension required. You can convert Java to COBOL without an account for up to 2 conversions per day. Sign in for free for higher limits.
What are the benefits of signing in?
Signing in unlocks CodeConvert AI's Pro converter with more powerful AI models, a built-in chat assistant, code execution, saved conversion history, and personal notes. Every free account includes 5 credits and supports up to 25,000 characters of input per conversion, with no credit card required.
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