Three simple steps
How to use this tool?
This free online converter translates Java source code into Scala 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 Scala.
- Step 3
Review the result
Review, copy, or download the resulting Scala code from the output editor.
See it in action
Examples of Java to Scala conversion
These examples show Java source code and the corresponding Scala 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
Scala code
Example 2
Even or Odd
A well commented function to check if a number if odd or even.
Java code
Scala code
Language comparison
Key differences between Java and Scala
| Characteristic | Java | Scala |
|---|---|---|
| Syntax | Java has a verbose syntax with a lot of boilerplate code, while Scala has a concise syntax with support for functional programming constructs. | Scala has a concise syntax with support for functional programming constructs. |
| Paradigm | Java is primarily an object-oriented language with support for imperative and procedural programming, while Scala is a multi-paradigm language with support for object-oriented, functional, and concurrent programming. | Scala is a multi-paradigm language with support for object-oriented, functional, and concurrent programming. |
| Typing | Java is a statically typed language with explicit type declarations, while Scala is a statically typed language with type inference. | Scala is a statically typed language with type inference. |
| Performance | Java has good performance due to its efficient bytecode execution and just-in-time (JIT) compilation, while Scala's performance is comparable to Java's. | Scala's performance is comparable to Java's. |
| Libraries and frameworks | Java has a vast ecosystem of libraries and frameworks, including Spring, Hibernate, and Apache Struts, while Scala has a smaller ecosystem but includes popular frameworks like Akka and Play. | Scala has a smaller ecosystem but includes popular frameworks like Akka and Play. |
| Community and support | Java has a large and active community with extensive documentation and support resources, while Scala has a smaller but growing community with good support resources. | Scala has a smaller but growing community with good support resources. |
| Learning curve | Java has a moderate learning curve due to its verbose syntax and complex APIs, while Scala has a steeper learning curve due to its functional programming constructs and complex type system. | Scala has a steeper learning curve due to its functional programming constructs and complex type system. |
Common questions
Frequently Asked Questions
How do I convert Java to Scala?
Paste your Java code into the input box, confirm the languages are set to Java and Scala, and click Convert. CodeConvert AI analyzes your Java code and generates equivalent Scala code in seconds, preserving the original logic and structure.
What are the main differences between Java and Scala?
Java and Scala 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 Scala equivalent. See the comparison table below for the key differences between Java and Scala.
Is the converted Scala code accurate?
The AI produces high-quality Scala code that preserves the behavior of your original Java code and follows Scala conventions. It handles common patterns, data structures, and idioms for both Java and Scala. For large or performance-critical code, review and test the Scala output before using it in production.
Can I convert an entire Java project to Scala?
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 Scala. Signing in for free raises the input limit to 25,000 characters per conversion for larger files.
Can I convert Scala back to Java?
Yes. CodeConvert AI converts in both directions, so you can convert Scala to Java just as easily using our Scala to Java converter. Try the Scala to Java Converter
Is the Java to Scala 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 Scala 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