wtf is groovy?

Apache Groovy is a programming language designed to run on the Java Virtual Machine (JVM), which is the same environment where standard Java applications run. Its main goal is to let developers write code more quickly and concisely than Java typically allows, while still being powerful enough for complex, production-level software. What makes Groovy distinctive is its flexibility. Developers can write code in a dynamic, free-flowing style where types don't strictly need to be declared upfront, similar to languages like Python or Ruby. But they can also opt into strict, static type checking and compilation that matches or even exceeds what standard Java offers. This means a team can start with fast, loose scripting and later tighten things up for maximum performance and safety, all within the same language. Groovy also integrates seamlessly with existing Java code, meaning any Java library or class can be used directly inside a Groovy program without special translation or wrappers. This project is the official source repository maintained under the Apache Software Foundation. Developers would use it if they want to dig into the language's internals, contribute fixes or new features, or build the language from scratch for a custom environment. For most everyday use, people simply download a pre-built version from the project's website rather than compiling it from this source code. Beyond general-purpose application development, Groovy is commonly used for writing build scripts (it's the foundation of the popular Gradle build tool), creating domain-specific languages tailored to a particular business problem, and adding scripting capabilities to Java applications that need to be configurable at runtime. It appeals to teams already invested in the Java ecosystem who want a more expressive, concise syntax without abandoning their existing Java infrastructure. The project is built using Gradle and requires a relatively recent version of Java (JDK 16 or higher) to compile from source. It is open source under the Apache License, with development supported by community donations and sponsorships from companies like JetBrains and YourKit.