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.

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Groovy

Scala

Java 12

Java 14

Java 16

Java 17

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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

To define a new class, create a new file named `Classname.java`. 
For example, to create a `Dragon` class, we will first create a file named `Dragon.java`, as shown in the following code widget.

import java.util.*;
public class Dragon{
    // class variables
    
    public static void main(String[] args) {
        // driver code
    }

}

In this case, the class does not have a package. If it did, we would have declared it in the first line and stored the file in the same directory structure of the package.

The first line above imports everything in the `java.util` package. This includes `List`, `ArrayList`, `Map`, and `HashMap` for example. Then, we declare a "`Dragon`" class. The above code will output "`Succeeded`" since there are no functions for the driver code to print anything else.

# Properties and methods
Next, we might want to add some properties and methods to our class. A **property** is a value associated with a particular object. A **method** is a block of code in a class.

Learn about Java classes, methods, and properties.

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

Classes in Java

Defining a Java class