Top 15 Best Java Courses Online

Hey, are you looking for the best Java Courses online to learn from the basic to advanced concepts and want to become a Java Developer?

Java was developed by James Gosling at Sun Microsystems. The syntax of Java is similar to C and C++. It has fewer low-level facilities than either of them. 

As of 2020, Professional developers still considered Java is one of the most popular programming languages for software development. 

So learning and mastering the Java programming skills helps you get a lot of job opportunities as a software developer.

So here in this post, you will find 

1. What is the definition of Java?
2. What are the differences between Java, Core Java, and Advanced Java?
3. What is the use of learning Java?
4. What are some tricks to learn Java quickly?
5. What are the best Java courses online?

Let’s start

1. What is the definition of Java?

Java is a general-purpose platform-independent programming language. It is a class-based, object-oriented, and designed to have as few implementation dependencies as possible. 

The most important feature of Java language is, it is a platform-independent language.  

That means, a program written in java can run on any platform like Desktop, Mobile, Internet which supports Java without the need for recompilation.

So if you learned Java, then you can able to build applications for desktop, mobile, and internet technologies.

2. What are the differences between Java, Core Java, and Advanced Java?

Do you know, Java technology can work as both a programming language and a platform.

As a programming language, you can build applications and as a platform, it provides a particular environment in which Java programming language applications run.

There are four platforms of the Java programming language:

Java Platform, Standard Edition (Java SE)
Java Platform, Enterprise Edition (Java EE)
Java Platform, Micro Edition (Java ME)
JavaFX

Java SE

When most people think of the Java programming language, they think of the Java SE API. It is also known as Core Java.

Java SE’s API provides the core functionality of the Java programming language. It defines everything from the basic types and objects of the Java programming language to high-level classes that are used for networking, security, database access, graphical user interface (GUI) development, and XML parsing.

In addition to the core API, the Java SE platform consists of a virtual machine, development tools, deployment technologies, and other class libraries and toolkits commonly used in Java technology applications.

Java EE

The Java EE platform is built on top of the Java SE platform. The Java EE platform provides an API and runtime environment for developing and running large-scale, multi-tiered, scalable, reliable, and secure network applications.

Java ME

The API is a subset of the Java SE API. It has many special class libraries useful for small device application development.

The Java ME platform provides an API and a small-footprint virtual machine for running Java programming language applications on small devices, like mobile phones. 

Java ME applications are often clients of Java EE platform services.

JavaFX

JavaFX is a platform for creating rich internet applications using a lightweight user-interface API. 

JavaFX is a set of graphics and media packages that enables developers to design, create, test, debug, and deploy rich client applications that operate consistently across diverse platforms.

JavaFX applications may be clients of Java EE platform services.

Now you got to understand about the different Java environments.

3. What is the use of learning Java?

Learn Java helps you build any application either for desktop, mobile, or the Internet by using Java language. 

Here are the list applications where we can use Java language.

GUI Applications for Desktop

By using Java, we can build GUI Applications for Desktop with its frameworks like AWT, JavaFX, and Swings. 

The Abstract Window Toolkit (AWT) is Java’s original platform-dependent windowing, graphics, and user-interface widget toolkit, preceding Swing. 

The AWT is part of the Java Foundation Classes (JFC) — the standard API for providing a graphical user interface (GUI) for a Java program.

Swing is a GUI widget toolkit for Java. It provides a more sophisticated set of GUI components than the earlier Abstract Window Toolkit (AWT).

JavaFX is a software platform for creating and delivering desktop applications, as well as rich Internet applications (RIAs) that can run across a wide variety of devices. 

JavaFX is intended to replace Swing as the standard GUI library for Java SE, but both will be included for the foreseeable future. 

Desktop computers and web browsers on Microsoft Windows, Linux, and macOS support JavaFX.

Web Applications

By using Java Servlet, JSP, Struts, hibernate, Spring, we can develop any web application.

Jakarta Server Pages is a collection of technologies that helps you create web pages based on HTML, XML, SOAP, or other document types. 

Apache Struts is an open-source web application framework for developing Java EE web applications. It uses and extends the Java Servlet API to encourage developers to adopt a model–view–controller (MVC) architecture.

Hibernate ORM (or simply Hibernate) is an object-relational mapping tool and its primary feature is mapping from Java classes to database tables. and mapping from Java data types to SQL data types. 

The Spring Framework is an application framework that can be used to create high performing, easily testable, and reusable code.

Mobile Applications

J2ME or Java ME is a cross-platform framework. It helps us to create any kind of application and games for any Android mobile because Android is completely Java-based.

Enterprise Applications 

We can build large enterprise applications by using Java because it is the most scalable, powerful, and secure programming language.

Application Servers and Web Servers

The Java ecosystem today includes many application servers and Java web servers. While Project Jigsaw, Jo!, Apache Tomcat, Rimfaxe Web Server (RWS), and Project Jigsaw control the webserver space. JBoss EAP, WebSphere, and WebLogic dominate business application server space.

4. What are some tricks to learn Java quickly?

“How to learn Java?” is the common question among the beginners. 

The answer to this question is “Practice … Practice … Practice”. 

When you decided to learn Java, then you may join an offline or an online course or read complete java tutorials on the internet. 

And in most cases, you will get a lot of theory about the Java language. knowing about the language is not help you to become a Java professional. 

One simple trick to learn Java is practice.

Start write coding to solve small problems around you. It helps you to face the real problems and get more understanding of the programming language.

The more you practice, the more you discover new things that help you a better understanding of the Java language.

4. What are the best Java courses online?

To learn Java, there are a lot of resources. Your success in learning Java depends on several factors. 

While constant practice is the main factor, learning on the right platform is another important factor. 

Here are my top 15 best Java courses online with more than 4.5 ratings out of 5 from top online learning web sites like Udemy, Coursera, and many more.