Three simple steps
How to use this tool?
This free online converter translates Java source code into F# 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 F#.
- Step 3
Review the result
Review, copy, or download the resulting F# code from the output editor.
See it in action
Examples of Java to F# conversion
These examples show Java source code and the corresponding F# 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
F# code
Example 2
Even or Odd
A well commented function to check if a number if odd or even.
Java code
F# code
Language comparison
Key differences between Java and F#
| Characteristic | Java | F# |
|---|---|---|
| Syntax | Java uses a C-style syntax with curly braces and semicolons. | F# uses a functional programming syntax with significant whitespace. |
| Paradigm | Java is primarily an object-oriented programming language. | F# is a multi-paradigm language that supports functional programming. |
| Typing | Java is statically typed. | F# is statically typed. |
| Performance | Java is known for its good performance. | F# can have comparable performance to other .NET languages. |
| Libraries and frameworks | Java has a vast ecosystem of libraries and frameworks. | F# can leverage the .NET ecosystem of libraries and frameworks. |
| Community and support | Java has a large and active community with extensive support. | F# has a smaller but growing community with good support. |
| Learning curve | Java has a moderate learning curve. | F# has a moderate learning curve, especially for developers familiar with functional programming. |
Common questions
Frequently Asked Questions
How do I convert Java to F#?
Paste your Java code into the input box, confirm the languages are set to Java and F#, and click Convert. CodeConvert AI analyzes your Java code and generates equivalent F# code in seconds, preserving the original logic and structure.
What are the main differences between Java and F#?
Java and F# 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 F# equivalent. See the comparison table below for the key differences between Java and F#.
Is the converted F# code accurate?
The AI produces high-quality F# code that preserves the behavior of your original Java code and follows F# conventions. It handles common patterns, data structures, and idioms for both Java and F#. For large or performance-critical code, review and test the F# output before using it in production.
Can I convert an entire Java project to F#?
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 F#. Signing in for free raises the input limit to 25,000 characters per conversion for larger files.
Can I convert F# back to Java?
Yes. CodeConvert AI converts in both directions, so you can convert F# to Java just as easily using our F# to Java converter. Try the F# to Java Converter
Is the Java to F# 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 F# 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.
More free tools