Groovy Programming Fundamentals for Java Developers

Name: Groovy Programming Fundamentals for Java Developers
Rating: 4.4 (118 reviews)

Supercharge your productivity by understanding the quickest way to write Java-based applications!

Created byMatt Speake

Last updated 12/2020

English

What you'll learn

The fundamentals of the Groovy programming language
How to write and adapt Groovy scripts
How to read Groovy and understand how a Groovy program functions

Course content

6 sections • 49 lectures • 2h 36m total length

Section Introduction0:22
Creating and Debugging a Groovy project in IDEA5:54
Create a Groovy project in IntelliJ IDEA, enable Groovy framework support, write a hello world class, and debug with breakpoints on the JVM to see Groovy syntax and interpolation.
Installing Groovy on a Mac or Linux System using sdk man7:20
Learn how to install Groovy on Mac or Linux with sdkman. Install sdkman, configure your shell profile, list Groovy versions, and set a default version.
Exploring the Groovy tool set6:44
Using the Groovy Console to Execute and Examine Groovy Code7:37
Explore the Groovy console to run code snippets, inspect the abstract syntax tree, and see how a tiny Groovy class automatically generates private properties with public getters and setters.

Section Introduction0:22
Master how to work with strings in Groovy by using string interpolation and regular expressions to format strings and extract the information you need.
String Interpolation2:47
Explore how Groovy handles strings, contrasting regular strings with interpolated strings. Use double quotes and placeholders with $variable and optional curly braces to interpolate values, producing g-strings.
Heredocs2:25
Pattern Operator in Regular Expressions2:51
Slashy Regular Expressions1:16
Find Operator in Regular Expressions1:40
Match Operator in Regular Expressions2:17
Capture Groups in Regular Expressions5:14
Explore capture groups in Groovy regular expressions to extract the day of the week from a string, using parentheses, match results, and the pattern find and match operators.

Section Introduction0:19
Creating Lists and Sets1:54
Creating Maps1:07
Composing Collections of Different Types0:53
Accessing Elements of a List1:21
Using Groovy Truthiness with Collections1:04
Creating and Accessing Composite Collections2:01
Processing Lists and Sets5:28
Processing Lists and Sets by Index1:38
Processing Maps by Key and Value3:23
Filtering Collections6:18
Finding the Matching Element in a Collection0:57
Testing Elements in Collections1:59
Collecting Elements to a List2:24
Collecting Entries to a Map1:05
Creating Aggregate Functions with Inject2:50

Section Introduction0:26
Default Imports and Classes3:31
Understand groovy's default imports, auto-including java.lang and common collections. See how numbers map to BigDecimal and BigInteger, and how a G suffix creates BigInteger alongside java.util collections.
Main Methods in Groovy Applications3:55
Explore how Groovy applications start with a public static void main method, using Groovy console scripts, and how weak typing and script simplifications influence main method behavior.
Creating Classes and Instances in Groovy1:46
Discover how to define classes and create instances in Groovy, mirroring Java syntax with a lighter touch. Learn when to add public static void main string args for executable scripts.
Adding methods and state to Groovy Classes2:03
Using Inheritance in Groovy2:04
Overriding methods in Groovy1:50
POGOs and Groovy Property Generation2:54
Discover how groovy properties replace private fields with package-private declarations, with automatic getters and setters. Compare pogo with pojo, see how AST transformations streamline class creation and leverage Java knowledge.
Operator Overloading3:45
Groovy's operator overloading maps operators to methods invoked behind the scenes, demonstrated by overloading plus and using a greeting wrapper to produce uppercase results with less boilerplate.
String Equality in Groovy1:54
Returning Multiple Values from a Method7:10
Learn how Groovy returns multiple values from a method using a list, replacing Java’s boilerplate classes with lightweight weak-typed syntax, as shown with box dimensions x, y, z.
Autogenerating Equals and HashCode with Groovy AST Transformations5:28
Named Constructors6:12

Requirements

Working knowledge of the Java programming language is assumed as a prerequisite, although the course can be used without this knowledge too (but it will make more sense and be easier for a Java developer to understand)

Description

Welcome to the wonderful world of Groovy!

In this course, we take you step-by-step through the most common features and programming idioms of the Groovy programming language enabling you to supercharge your developer productivity by harnessing the power of Groovy's lightweight and succinct programming syntax!

We'll explore Groovy's lightweight and powerful syntax which slashes development time down to at most a quarter of the time you'd spend in writing the equivalent Java program!

As a Java developer of over 20 years programming in the main investment banks of the world, I'm proficient in Java for sure. But in spite of the skill level I have in Java, Groovy is still my number one go-to language when it comes to knocking up quick scripts to automate drudge work and even for writing full scale applications too (using other frameworks such as Grails and Griffon).

Groovy is predominantly seen today in Jenkins pipelines scripts and in Gradle build scripts, but this really underplays its power and versatility as we'll see in this course. You're gonna excited by it's features and start using it in your day to day developer activities once you take this course!

In particular, you'll learn the following:

Getting set up with Groovy, installing it and creating Groovy projects in the IDE
Exploring the Groovy toolset
Using Groovy Console to execute Groovy code
Common Groovy operators which form the cornerstone of it's powerful syntax
Strings, heredocs and using regular expressions and capture groups to parse and extract strings
Groovy collections and the enhancements delivered by the GDK (Groovy Development Kit)
Iterating collections
Searching through collections
Filtering and transforming collections in Groovy with Groovy's powerful closure mechanism

and much much more!

I can't wait to see you inside and share my passion for Groovy with you - so enrol today and let's get started! ;)

Who this course is for:

Beginning to intermediate level Java developers who want to accelerate their existing Java coding tasks by using Groovy
Interested developers of other programming languages who want to lear the fastest way to write programs which can execute on the Java Virtual Machine, without having to use Java itself

Groovy Programming Fundamentals for Java Developers

What you'll learn

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Course content

Getting Set Up5 lectures • 28min

Groovy Operators6 lectures • 31min

Groovy Strings8 lectures • 19min

Collections in Groovy16 lectures • 35min

Groovy Language Features13 lectures • 43min

Wrapping Up1 lecture • 1min

Requirements

Description

Who this course is for: