Groovy Training for Java Developers Training Class | Webucator Programming Classes

Overview

This Groovy Training for Java Developers training class teaches experienced Java developers how to write programs in Groovy, both by itself and in conjunction with existing Java code.

Goals

Understand how dynamic languages differ from languages like Java or C#
Work with Groovy closures
Use Groovy control structures
Build object-oriented programs in Groovy
Use Groovy builders to reduce complexity
Access databases using Groovy
Write unit tests in Groovy
Access Java classes from Groovy, and vice versa
Build a simple web application using Grails
Work with Groovy strings, closures, and collections
Develop model-view-controller web applications using Grails
Access relational databases from Grails
Build unit and functional tests for web applications
Groovy support in the Spring framework
Build and test RESTful web

Outline

Groovy Fundamentals
1. Differences between Groovy and Java
2. Compiling and executing Groovy programs
3. The basic Groovy data types and optional typing
4. Writing Groovy scripts
5. Declaring classes
6. Overriding operators and type coercion
7. The Groovy JDK: Groovy extensions to the Java standard library
8. Groovy strings
9. Regular expressions in Groovy
Object-Oriented Programming In Groovy
1. Plain Old Groovy Objects (POGOs)
2. Generated getters/setters
3. Public vs private defaults
4. Map-based constructors
5. @ToString, @EqualsAndHashCode, @TupleConstructor, and @Canonical
Groovy Collections
1. Ranges
2. Lists
3. Maps
4. Iterators and polymorphic algorithms
Closures in Groovy
1. Declaring closures
2. Available options for calling closures
Groovy Control Structures
1. The "Groovy truth"
2. Conditional execution
3. Looping constructs
Miscellaneous Groovy operators
1. Safe navigation with the ?. operator
2. The Elvis operator
3. The spaceship operator
Unit Testing in Groovy
1. GroovyTestCase
2. JUnit tests in Groovy
3. The Spock testing framework
4. Spock mocks and stubs
Abstract Syntax Tree (AST) Transformations
1. @Delegate
2. @Immutable
3. @Singleton
4. @TypeChecked and @CompileStatic
Groovy Builders
1. MarkupBuilder
2. JsonBuilder
3. AntBuilder and others
Runtime Metaprogramming
1. Working with Expandos
2. The MetaClass class
3. Adding fields and methods at runtime
4. The Intercept-Cache-Invoke design pattern
Database Access with Groovy
1. Basic database operations
2. DataSet operations
3. Groovy and ORM solutions
The Spring Framework
1. Using Groovy beans in Spring applications
2. "Refreshable" beans
3. Inline scripted beans
4. AOP using Groovy
5. The Groovy BeanBuilder in Spring
RESTful web services
1. JAX-RS annotations on Groovy classes
2. JsonSlurper and JsonBuilder
3. REST clients with the HttpBuilder project
4. The ratpack framework
5. REST additions to Grails 2.3+
The Gradle Build Tool
1. The build challenge
2. The Gradle plugin system
3. Defining tasks and dependencies
4. Using repositories
5. Multi-project builds

Class Materials

Each student in our Live Online and our Onsite classes receives a comprehensive set of materials, including course notes and all the class examples.

Class Prerequisites

Experience in the following is required for this Groovy class:

Working knowledge of Java.

Preparing for Class

Onsite: Course Setup
Live Online: Course Setup | WebEx Setup

No cancelation for low enrollment

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