Groovy

Groovy programming language tutorials, examples, and best practices.

15 Essential Groovy Closure Examples – The Complete Guide

Groovy closures are one of the language’s most useful features. See 15 practical examples covering syntax, parameters, delegate, composition, and real-world patterns. Tested on Groovy 5.0.6. “Closures are the Swiss Army knife of Groovy. Once you understand them, every other feature clicks into place.” Last Updated: July 2026 | Tested on: Groovy 5.0.6, Java 17+ | Difficulty: Intermediate | Reading Time: 22 minutes If there’s one feature that defines Groovy’s personality, it’s closures. They show up everywhere — in loops, ... Read More

Groovy print vs println – All Output Methods Explained with 14 Examples

This guide covers Groovy println, print, printf, System.out, and formatted output with 14 practical examples. Complete guide to console output tested on Groovy 5.0.6. “The first thing every programmer learns is how to print. The last thing they master is knowing what to print and where.” Last Updated: July 2026 | Tested on: Groovy 5.0.6, Java 17+ | Difficulty: Beginner | Reading Time: 16 minutes The groovy println statement is usually the first thing you write when learning the language, ... Read More

Groovy Sleep and Timing – Pause Execution with 14 Practical Examples

A script that hammers an API with no pause, a test that finishes before the async work it started, a benchmark that lies by a factor of ten: bad pausing and bad measuring cause real production bugs. This groovy sleep guide covers the GDK sleep() method, Thread.sleep(), timing with nanoTime, benchmarking, and timeout patterns, all tested on Groovy 5.0.6. “Timing is everything – in comedy, in cooking, and especially in programming.” Last Updated: July 2026 | Tested on: Groovy 5.0.6, ... Read More