Course Groovy Programming

  • Content
  • Training
  • Modules
  • General
  • Reviews
  • Certificate
  • Course Groovy Programming : Content

    In the course Groovy Programming participants learn to program in the dynamic scripting language Groovy, which is also considered Java++. Groovy is a JVM language which means that Groovy scripts are interoperable with Java code and can therefore easily be used together with Java in the same application. Groovy is a natural extension to the Java syntax and offers, among other things, a simpler syntax for lists, ranges, maps and regular expressions.

    Groovy Intro

    The course starts with an introduction to the basic features of Groovy and covers dynamic typing and type inference in Groovy. It is discussed how Groovy differs from Java with much less boilerplate code and support for scripting.

    Language Syntax and Data Structures

    Next the Groovy language syntax with variables, data types, conditionals, operators and loops is covered. Groovy data structures like lists, maps and sets are also treated and also how Groovy uses the Java Collection Framework.

    Methods and Closures

    Groovy methods, parameters passing and closures are also part of the course program. Groovy closures are anonymous code blocks that, as function objects with the scope in which they are created, are stored to be executed at a later time, with or without additional parameters.

    Classes and Traits

    And just like Java, Groovy is an object-oriented language and attention is paid to how you use classes, constructors, fields, interfaces and traits in Groovy.

    XML and JSON

    File I/O is on the program of the course as well and in that context the commonly used data formats XML and JSON are treated and how Groovy deals with them.

    Meta Programming

    Finally the course concludes with a discussion of meta programming in Groovy, which makes it possible to call methods dynamically and to create classes and methods on the fly.

  • Course Groovy Programming : Training

    Audience Course Groovy Programming

    The course Groovy Programming is intended for Java developers who want to learn programming using the scripting language Groovy.

    Prerequisites Course Groovy Programming

    To participate in this course knowledge of and experience with programming in Java is required.

    Realization Training Groovy Programming

    The theory is discussed on the basis of presentation slides and is interspersed with exercises. Illustrative demos provide further clarification of the discussed concepts. The course material is in English.

    Certification Groovy Programming

    Participants receive an official certificate Groovy Programming after successful completion of the course.

    Course Groovy Programming
  • Course Groovy Programming : Modules

    Module 1 : Groovy Intro

    Module 2 : Language Syntax

    Module 3 : Data Structures

    What is Groovy?
    Groovy Features
    HelloWorld in Java
    HelloWorld in Groovy
    Removing Noise
    Removing Boilerplate
    Dynamic Types
    Variable Interpolation
    POJOs on Steroids
    Script Support
    Differences with Java
    Running Groovy Scripts
    Groovy Development Kit
    Groovy Variables and Data Types
    Wrapper Types
    Number Methods
    Groovy Strings
    Groovy Conditionals
    Switch Statement
    Groovy Operators
    Other Operators
    Elvis Operator
    Range Operator
    Groovy Loops
    For in Loop
    Each Loop
    Groovy Lists
    List Methods
    List Manipulation
    Groovy Maps
    Map Methods
    Map Manipulation
    Java Collection Interface
    Concrete Collections
    List Interface
    ArrayList Class
    LinkedList Class
    Set and SortedSet
    Map Interface

    Module 4 : Methods and Closures

    Module 5 : File I/O

    Module 6 : Classes and Traits

    Groovy Methods
    Method Parameters
    Return Values
    Locals versus Globals
    What are Closures?
    Benefits of Closures
    Groovy Closures
    Closure Parameters
    Closure Variables
    Closures in Methods
    Closures and Collections
    Find and FindAll
    Any and Every
    IO Basics
    Java Stream Classes
    Stream Types
    Nested Streams
    Groovy IO
    Reading Files
    Writing Text
    Data Conversion Streams
    DataStreams Java
    DataStreams Groovy
    Copy and Delete
    Directory Methods
    Traversing File Trees
    Executing External Processes
    Groovy Classes
    Normal Class
    Duck Typing
    Property Support
    Inner Classes
    Inner Class Usage
    Anonymous Inner Class
    Abstract Classes
    Meaning of this

    Module 7 : XML and JSON Handling

    Module 8 : Meta Programming

    XML Processing Options
    DOM Tree
    SAX Callbacks
    XML Support in Groovy
    JSON Object Representation
    JSON Array Representation
    JSON with Array and Objects
    Groovy Json Classes
    Producing JSON from Map
    Produce JSON From Pogo
    JSON with JSONSlurper
    Groovy is Dynamic
    Dynamic Methods
    Adding Properties
    Meta Object Protocol
    Invoker Operation
    GroovyObject interface
    Groovy Interceptable
    Intercepting Methods
  • Course Groovy Programming : General

    Course Forms

    All our courses are classroom courses in which the students are guided through the material on the basis of an experienced trainer with in-depth material knowledge. Theory is always interspersed with exercises.


    We also do custom classes and then adjust the course content to your wishes. On request we will also discuss your practical cases.

    Course times

    The course times are from 9.30 to 16.30. But we are flexible in this. Sometimes people have to bring children to the daycare and other times are more convenient for them. In good consultation we can then agree on different course times.


    We take care of the computers on which the course can be held. The software required for the course has already been installed on these computers. You do not have to bring a laptop to participate in the course. If you prefer to work on your own laptop, you can take it with you if you wish. The required software is then installed at the start of the course.


    Our courses are generally given with Open Source software such as Eclipse, IntelliJ, Tomcat, Pycharm, Anaconda and Netbeans. You will receive the digital course material to take home after the course.


    The course includes lunch that we use in a restaurant within walking distance of the course room.


    The courses are planned at various places in the country. A course takes place at a location if at least 3 people register for that location. If there are registrations for different locations, the course will take place at our main location, Houten which is just below Utrecht. A course at our main location also takes place with 2 registrations and regularly with 1 registration. And we also do courses at the customer’s location if they appreciate that.


    At the end of each course, participants are requested to evaluate the course in terms of course content, course material, trainer and location. The evaluation form can be found at https://www.klantenvertellen.nl/reviews/1039545/spiraltrain?lang=en. The evaluations of previous participants and previous courses can also be found there.


    The intellectual property rights of the published course content, also referred to as an information sheet, belong to SpiralTrain. It is not allowed to publish the course information, the information sheet, in written or digital form without the explicit permission of SpiralTrain. The course content is to be understood as the description of the course content in sentences as well as the division of the course into modules and topics in the modules.

  • Course Groovy Programming : Reviews

  • Course Groovy Programming : Certificate