Gain insights into Java 17, cloud and microservices, reactive programming, and top JVM languages. Explore hands-on projects using Scala, Groovy, and Gradle to boost your software development career.

Modern Java Second Edition by Adam L. Davis.png

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modern_java

Groovy

Scala

Java 12

Java 14

Java 16

Java 17

Java 16-copy

Play

jshell

SPA-play

Gradle-uppercase

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Gradle-properties

Java 14-copy

Java 16-fruits

Java 16-strings

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This course is meant for Java programmers or aspiring programmers who want to know about the latest Java and JVM technology. Throughout this course, you will get several opportunities to get hands-on experience with various Java concepts. 

This course will help you understand the latest in Java up to version 17; cloud and microservices; build, testing, and web frameworks; reactive programming in Java; and the best JVM languages so you can advance your career in software development. 

Moreover, you will also get to work with Scala, Groovy, and Gradle. The course explains Java concepts in detail and also draws comparisons with its older versions, as well as JVM languages.

The All-in-One Guide to Java Programming

## Testing
Grails supports unit testing with a mixin approach.
Annotations:
* `@TestFor(X)`: Specifies the class under test.
* `@Mock(Y)`: Creates a Mock for the given class.

For tests GORM provides an in-memory mock database that uses a ConcurrentHashMap.
You can create tests for Tag libraries, command objects, URL-Mappings, XML & JSON, etc.

## Cache plugin
* You can add the `@Cacheable` annotation on Service or Controller methods.
* Cache tags: `cache:block` and `cache:render`
* Cache-ehcache, -redis, and -gemfire
* Cache configuration DSL


## Grails wrapper
The Grails wrapper was added in Grails 2.0. You can create the wrapper using the following
command:
```
$ grails wrapper
```
The above produces `grailsw` and `grailsw.bat` (for Nix and Windows, respectively).

The Grails wrapper is helpful when multiple people are working on a project. The wrapper scripts
will actually download and install grails when run. Then you can send these scripts to anyone or
keep them in your repository.

## Cloud
Grails is supported by the following cloud providers:
* Amazon
* Heroku

# Testing
Grails supports unit testing with a mixin approach.
Annotations:
* `@TestFor(X)`: Specifies the class under test.
* `@Mock(Y)`: Creates a Mock for the given class.

For tests GORM provides an in-memory mock database that uses a ConcurrentHashMap.
You can create tests for Tag libraries, command objects, URL-Mappings, XML & JSON, etc.

# Cache plugin
* You can add the `@Cacheable` annotation on Service or Controller methods.
* Cache tags: `cache:block` and `cache:render`
* Cache-ehcache, -redis, and -gemfire
* Cache configuration DSL


# Grails wrapper
The Grails wrapper was added in Grails 2.0. You can create the wrapper using the following
command:
```
$ grails wrapper
```
The above produces `grailsw` and `grailsw.bat` (for Nix and Windows, respectively).

The Grails wrapper is helpful when multiple people are working on a project. The wrapper scripts
will actually download and install grails when run. Then you can send these scripts to anyone or
keep them in your repository.

# Cloud
Grails is supported by the following cloud providers:
* Amazon
* Heroku

Learn about testing in Grails and the cache plugin.

Testing and Some Plugins

Introduction

Java Syntax and Conventions

Java 7

Idiomatic Java 8: Lambdas, Streams, and Dates

New Date and Time API

Java 8 Miscellaneous

Advantages of Java 9

Java 10 - 17

Java Ecosystem

Maven and JUnit

Utilizing Essential Libraries

Modern Java Concurrency

RxJava

Other JVM Languages

Groovy

Gradle

Spock

Scala

RESTful

Microservices and Clouds

Grails

Spark

Spring Boot

Play Framework

Ratpack

Final Thoughts

Appendix

Testing and Some Plugins

Testing