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Step-by-step Groovy tutorials for developers of all skill levels.

Groovy SQL Update and Delete – 13 Tested Examples with H2

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Groovy SQL update and delete operations with 13+ examples. Covers executeUpdate, parameterized queries, batch updates, and soft deletes. Tested on Groovy 5.x. “The ability to destroy data is just as important as the ability to create it. The trick is knowing which rows to touch.” C.J. Date, Database Relational Model Last Updated: March 2026 | Tested on: Groovy 5.x, Java 17+ | Difficulty: Intermediate | Reading Time: 25 minutes So you’ve connected to a database and you know how to ... Read More

Groovy CSV Parsing and Generation – 10+ Tested Examples

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Groovy CSV parsing and generation with 10+ examples. Split, tokenize, OpenCSV, read/write CSV files, handle headers and special chars on Groovy 5.x. “CSV files are the cockroaches of data formats – they survive everything and show up everywhere. Groovy gives you clean ways to deal with them.” Rob Pike, Notes on Programming in C Last Updated: March 2026 | Tested on: Groovy 5.x, Java 17+ | Difficulty: Beginner to Intermediate | Reading Time: 22 minutes CSV files are everywhere – ... Read More

Groovy Date and Time – Modern API Guide with 12 Tested Examples

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Groovy date and time with the java.time API. 12+ examples covering LocalDate, LocalDateTime, ZonedDateTime, Duration, formatting. Groovy 5.x. “The only reason for time is so that everything doesn’t happen at once. In Groovy, at least, you get to control when it does.” Adapted from Albert Einstein Last Updated: March 2026 | Tested on: Groovy 5.x, Java 17+ | Difficulty: Beginner to Intermediate | Reading Time: 25 minutes If you’ve ever wrestled with java.util.Date and SimpleDateFormat in Groovy, you know the ... Read More