You have 5 free credits left! Sign in to unlock more.

Online Crystal to Java Converter

Have a file? Upload

Additional Instructions

How to use this tool?

This free online converter lets you convert code from Crystal to Java in a click of a button. To use this converter, take the following steps -

Type or paste your Crystal code in the input box.
Click on the "Convert" button.
The converted Java code will be displayed in the output box.

Examples

The following are examples of code conversion from Crystal 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.

Crystal Code:

Java Code:

Example 2 - Even or Odd

A well commented function to check if a number if odd or even.

Crystal Code:

Java Code:

Differences

The following are some key differences between Crystal and Java.

Characteristic	Crystal	Java
Syntax	Crystal has a syntax similar to Ruby, with some differences. It is designed to be easy to read and write.	Java has a syntax that is similar to C++, with some differences. It is designed to be simple and familiar to programmers.
Paradigm	Crystal supports object-oriented programming and has some functional programming features.	Java supports object-oriented programming and has limited support for functional programming.
Typing	Crystal is a statically-typed language, which means that variable types are checked at compile-time.	Java is a statically-typed language, which means that variable types are checked at compile-time.
Performance	Crystal is designed to have similar performance to C, with some optimizations.	Java is designed to have good performance, but it may not be as fast as languages like C or C++.
Libraries and frameworks	Crystal has a smaller ecosystem compared to Java, but it has some libraries and frameworks available.	Java has a large ecosystem with a wide range of libraries and frameworks available.
Community and support	Crystal has a smaller community compared to Java, but it has an active and growing community.	Java has a large and mature community with extensive support and resources available.
Learning curve	Crystal has a relatively small learning curve, especially for developers familiar with Ruby.	Java has a moderate learning curve, especially for developers familiar with C++ or C#.

Instant AI Code Converters
— No Setup Required

Convert your code between languages with AI-driven accuracy. Choose a converter and get started instantly.