Three simple steps
How to use this tool?
This free online converter translates Java source code into C# 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 C#.
- Step 3
Review the result
Review, copy, or download the resulting C# code from the output editor.
See it in action
Examples of Java to C# conversion
These examples show Java source code and the corresponding C# 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
C# code
Example 2
Even or Odd
A well commented function to check if a number if odd or even.
Java code
C# code
Language comparison
Key differences between Java and C#
| Characteristic | Java | C# |
|---|---|---|
| Syntax | Java has a C-style syntax, with curly braces and semicolons. | C# has a syntax similar to Java, with curly braces and semicolons. |
| Paradigm | Java is primarily an object-oriented language, but also supports functional programming. | C# is primarily an object-oriented language, but also supports functional programming. |
| Typing | Java is a statically typed language, meaning that variable types are checked at compile time. | C# is a statically typed language, meaning that variable types are checked at compile time. |
| Performance | Java is known for its good performance due to its Just-In-Time (JIT) compiler and garbage collector. | C# is known for its good performance due to its Just-In-Time (JIT) compiler and garbage collector. |
| Libraries and frameworks | Java has a vast collection of libraries and frameworks, including Spring, Hibernate, and Apache Struts. | C# has a growing collection of libraries and frameworks, including .NET Core, ASP.NET Core, and Entity Framework Core. |
| Community and support | Java has a large and active community, with many resources available for learning and troubleshooting. | C# has a growing community, with many resources available for learning and troubleshooting. |
| Learning curve | Java has a moderate learning curve, with a lot of syntax and concepts to learn. | C# has a moderate learning curve, with a lot of syntax and concepts to learn. |
Common questions
Frequently Asked Questions
How do I convert Java to C#?
Paste your Java code into the input box, confirm the languages are set to Java and C#, and click Convert. CodeConvert AI analyzes your Java code and generates equivalent C# code in seconds, preserving the original logic and structure.
What are the main differences between Java and C#?
Java and C# 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 C# equivalent. See the comparison table below for the key differences between Java and C#.
Is the converted C# code accurate?
The AI produces high-quality C# code that preserves the behavior of your original Java code and follows C# conventions. It handles common patterns, data structures, and idioms for both Java and C#. For large or performance-critical code, review and test the C# output before using it in production.
Can I convert an entire Java project to C#?
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 C#. Signing in for free raises the input limit to 25,000 characters per conversion for larger files.
Can I convert C# back to Java?
Yes. CodeConvert AI converts in both directions, so you can convert C# to Java just as easily using our C# to Java converter. Try the C# to Java Converter
Is the Java to C# 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 C# 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.
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