Groovy Training Overview
Accelebrate's Groovy for Java Developers training teaches experienced Java developers how to write programs in Groovy that simplify, enhance, and expand their existing knowledge.
Location and Pricing
Accelebrate offers instructor-led enterprise training for groups of 3 or more online or at your site. Most Accelebrate classes can be flexibly scheduled for your group, including delivery in half-day segments across a week or set of weeks. To receive a customized proposal and price quote for private corporate training on-site or online, please contact us.
In addition, some courses are available as live, instructor-led training from one of our partners.
Objectives
- Understand optional typing, in contrast to static or dynamic
- Work with Groovy closures
- Use Groovy control structures
- Build object-oriented programs in Groovy
- Use Groovy builders to reduce complexity
- Access databases using Groovy
- Process XML and JSON data
- Write unit tests in Groovy
- Access Java classes from Groovy, and vice versa
Prerequisites
All attendees should have a good knowledge of Java techniques, including the Collections framework and JDBC.
Outline
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Groovy Fundamentals
- Differences between Groovy and Java
- Compiling and executing Groovy programs
- The basic Groovy data types and optional typing
- Writing Groovy scripts
- Declaring classes
- Overriding operators and type coercion
- Groovy strings
- Regular expressions in Groovy
Groovy Collections
- Ranges
- Lists
- Maps
- Iterators and polymorphic algorithms
Closures in Groovy
- Declaring closures
- Available options for calling closures
Groovy Control Structures
- The "Groovy truth"
- Conditional execution
- Looping constructs
Using Classes and Scripts
- Groovy fields and local variables
- Methods and operations
- Organizing classes in packages
- Using inheritance
- POGO's vs. POJO's
Unit Testing in Groovy
- JUnit tests in Groovy
- The assert method
- The Spock testing framework
Miscellaneous Operators
- Safe navigation
- Elvis
- Spaceship
- Method references and closures from Java
Survey of the GDK
- File access
- Additional collections methods
- URLs and networking
Database Access with Groovy
- Basic database operations
- Groovy and ORM solutions
Working with XML and JSON
- Reading and parsing XML documents
- Parsing and generating JSON
- Working with external libraries like GSON
Simple Metaprogramming
- The Expando class
- Adding attributes and methods using Expando MetaClass
- Categories
AST Transformations
- @ToString, @EqualsAndHashCode, @TupleConstructor
- @Canonical
- @Delegate
- @Immutable
- @TypeChecked
- @CompileStatic and @CompileDynamic
Conclusions
Training Materials
All Groovy training students receive comprehensive courseware.
Software Requirements
- JDK 8 or later
- The latest stable release of Groovy
- A powerful IDE that supports Groovy, such as Eclipse or (preferred) IntelliJ IDEA
- Related free software and lab files; please contact us for detailed specifications
