Free COBOL to Java Converter
How to use this tool?
This free online converter lets you convert code from COBOL to Java in a click of a button. To use this converter, take the following steps -
- Type or paste your COBOL code in the input box.
- Click the convert button.
- The resulting Java code from the conversion will be displayed in the output box.
Examples
The following are examples of code conversion from COBOL to Java using this converter. Note that you may not always get the same code since it is generated by an AI language model which is not 100% deterministic and gets updated from time to time.
Example 1 - Is String Palindrome
Program that checks if a string is a palindrome or not.
COBOL
Java
Example 2 - Even or Odd
A well commented function to check if a number if odd or even.
COBOL
Java
Key differences between COBOL and Java
| Characteristic | COBOL | Java |
|---|---|---|
| Syntax | COBOL has a verbose and English-like syntax. | Java has a more concise and C-like syntax. |
| Paradigm | COBOL is primarily procedural and imperative. | Java is object-oriented and supports procedural and imperative programming. |
| Typing | COBOL has static typing. | Java has static typing with type inference. |
| Performance | COBOL is known for its efficient performance in handling large-scale data processing. | Java provides good performance and is optimized for general-purpose computing. |
| Libraries and frameworks | COBOL has a limited number of libraries and frameworks compared to Java. | Java has a vast ecosystem of libraries and frameworks for various purposes. |
| Community and support | COBOL has a smaller and more specialized community compared to Java. | Java has a large and active community with extensive support. |
| Learning curve | COBOL has a steeper learning curve due to its unique syntax and specialized use cases. | Java has a relatively moderate learning curve and is widely taught and documented. |
Frequently Asked Questions
How do I convert COBOL to Java?
Paste your COBOL code into the input box, confirm the languages are set to COBOL and Java, and click Convert. CodeConvert AI analyzes your COBOL code and generates equivalent Java code in seconds, preserving the original logic and structure.
What are the main differences between COBOL and Java?
COBOL and Java differ in syntax, type system, standard libraries, and common idioms, so copying code line for line usually will not compile. The converter maps each COBOL construct to its closest Java equivalent. See the comparison table below for the key differences between COBOL and Java.
Is the converted Java code accurate?
The AI produces high-quality Java code that preserves the behavior of your original COBOL code and follows Java conventions. It handles common patterns, data structures, and idioms for both COBOL and Java. For large or performance-critical code, review and test the Java output before using it in production.
Can I convert an entire COBOL project to Java?
You can convert COBOL 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 COBOL to Java. Signing in for free raises the input limit to 25,000 characters per conversion for larger files.
Can I convert Java back to COBOL?
Yes. CodeConvert AI converts in both directions, so you can convert Java to COBOL just as easily using our Java to COBOL converter. Try the Java to COBOL Converter
Is the COBOL to Java 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 COBOL to Java without an account for up to 5 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.
