Online Groovy Compiler - Free Groovy Programming IDE

Run Groovy code online with our fast Groovy interpreter. Perfect for DevOps scripting, JVM development, automation, and testing Groovy code without installation.

groovy Online Compiler

println("Welcome to Groovy Online Compiler!")

// Variables and dynamic typing
def name = "Groovy"
def version = 4.0
def isAwesome = true

println("Language: ${name}")
println("Version: ${version}")
println("Is awesome: ${isAwesome}")

// String interpolation
def greeting = "Hello from ${name}!"
println(greeting)

// Lists and iteration
def numbers = [1, 2, 3, 4, 5]
println("Numbers: ${numbers}")

numbers.each { num ->
  println("Square of ${num} is ${num * num}")
}

// Maps
def person = [
  name: 'John',
  age: 30,
  city: 'New York'
]

println("Person: ${person}")
person.each { key, value ->
  println("${key}: ${value}")
}

// Closures
def multiply = { a, b -> a * b }
println("Multiply 5 * 3 = ${multiply(5, 3)}")

// Methods
String describe(String item, int quantity) {
  return "You have ${quantity} ${item}(s)"
}

println(describe("apple", 10))

// List operations with closures
def doubled = numbers.collect { it * 2 }
println("Doubled: ${doubled}")

def evens = numbers.findAll { it % 2 == 0 }
println("Even numbers: ${evens}")

// Regular expressions
def regex = ~/\d+/
def text = "I have 5 apples and 3 oranges"
def matches = text.findAll(regex)
println("Numbers found: ${matches}")

Output

Click "Run" to execute your code and see the output here...

println("Welcome to Groovy Online Compiler!")

// Variables and dynamic typing
def name = "Groovy"
def version = 4.0
def isAwesome = true

println("Language: ${name}")
println("Version: ${version}")
println("Is awesome: ${isAwesome}")

// String interpolation
def greeting = "Hello from ${name}!"
println(greeting)

// Lists and iteration
def numbers = [1, 2, 3, 4, 5]
println("Numbers: ${numbers}")

numbers.each { num ->
  println("Square of ${num} is ${num * num}")
}

// Maps
def person = [
  name: 'John',
  age: 30,
  city: 'New York'
]

println("Person: ${person}")
person.each { key, value ->
  println("${key}: ${value}")
}

// Closures
def multiply = { a, b -> a * b }
println("Multiply 5 * 3 = ${multiply(5, 3)}")

// Methods
String describe(String item, int quantity) {
  return "You have ${quantity} ${item}(s)"
}

println(describe("apple", 10))

// List operations with closures
def doubled = numbers.collect { it * 2 }
println("Doubled: ${doubled}")

def evens = numbers.findAll { it % 2 == 0 }
println("Even numbers: ${evens}")

// Regular expressions
def regex = ~/\d+/
def text = "I have 5 apples and 3 oranges"
def matches = text.findAll(regex)
println("Numbers found: ${matches}")

What is Groovy Programming Language?

Groovy is a powerful, dynamically typed scripting language for the Java Virtual Machine (JVM). Created in 2003, Groovy seamlessly integrates with Java while providing a more concise and expressive syntax. It's widely used for scripting, testing, automation, and DevOps tasks in enterprise environments.

Our online Groovy compiler provides a complete development environment where you can write, run, and test Groovy code instantly. Whether you're automating deployment pipelines, writing Jenkins scripts, building Gradle plugins, or learning Groovy programming, our IDE supports all your needs.

Groovy Compiler Features

Language Features

Dynamic typing with optional static compilation
Closures and higher-order functions
String interpolation and regex support
Full Java interoperability and library access

Development Tools

Advanced code editor with Groovy syntax highlighting
Instant code compilation and execution
Real-time error detection and debugging
No setup or installation required

Essential Groovy Programming Concepts

Closures

Use closures for functional programming patterns. Pass blocks of code as parameters to functions for flexible and expressive data processing.

String Interpolation

Embed expressions directly in strings using \$ syntax. Create dynamic strings with minimal syntax for cleaner code compared to Java.

Collections API

Work with lists, maps, and sets using convenient operators. Use methods like each, map, filter, and reduce for elegant data manipulation.

Regular Expressions

Built-in support for regular expressions with the ~/ / operator. Match, split, and replace text patterns with concise syntax.

Metaprogramming

Leverage Groovy's metaprogramming capabilities. Dynamically add methods to classes and inspect object structures at runtime.

Java Integration

Seamlessly use any Java library and class. Mix Java and Groovy code for powerful scripting with access to the entire Java ecosystem.

Groovy Programming Applications

DevOps & Scripting

Automation, deployment scripts, and infrastructure management

Continuous Integration

Jenkins, GitLab CI, and CI/CD pipeline scripting

Testing & QA

Spock testing framework and Gradle build testing

Build Tools

Gradle plugins and build customization

Frequently Asked Questions

Is this Groovy compiler free to use?

Yes, our online Groovy compiler is completely free to use. You can write, run, and test Groovy code without any registration, subscription, or hidden costs. We provide this service to support Groovy learning and development worldwide.

Which Groovy version does your compiler support?

Our online Groovy compiler runs the latest stable Groovy version with support for modern features like closures, optional typing, string interpolation, regex, and full Java interoperability.

Can I use external libraries with Groovy?

Our online compiler supports Groovy's core features and standard library. For development with external Java/Groovy libraries, consider using local development environments with Maven or Gradle for full dependency management and library access.

Is this suitable for learning Groovy?

Absolutely! Our Groovy compiler is perfect for learning Groovy fundamentals. It provides immediate feedback, supports all core Groovy features, and shows you how Groovy's concise syntax compares to Java. Great for beginners and experienced developers alike.

Can I write DevOps scripts here?

Yes, you can practice Groovy scripting for DevOps tasks. Write and test automation scripts, string manipulation, list processing, and other scripting patterns used in DevOps and CI/CD pipelines. Perfect for learning Groovy DSL concepts.

How do I use closures?

Groovy closures are simple to use. You can create closures with the syntax, pass them to methods, and use them with collection operations like each, map, filter. Our compiler fully supports closures and higher-order function patterns.

Are there any execution limits?

Yes, to ensure fair usage and system stability, Groovy programs have execution time and memory limits. Most educational and practice programs will run without issues. Infinite loops and excessive resource usage will be terminated automatically.

Can I use Java classes in my Groovy code?

Yes, Groovy has full Java interoperability. You can use Java classes and libraries directly in your Groovy code. This is one of Groovy's key strengths - seamless integration with the entire Java ecosystem.