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How To Learn Java (Step by Step Guide)

(Step by Step Guide)

Learn Java

How to Learn Java

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Java is among the top programming languages of 2022. Java is a robust, statically typed, safe
, class-based programming language that has been ruling the web for some time. Java is used in almost all domains like retail, finance, healthcare, logistics, etc. It is compatible and versatile and used for mobile, desktop, and web applications, games, web servers, application servers, database connection, client-side validations, and many more.
The product is free, and open-source adds to its popularity. Also, most graduates learn about C/C++ as part of their curriculum, so learning Java becomes easy and this blog post wil give you a detailed guidelines about how to learn java programming.

How To Learn Java (Step by Step Guide)

Why Should You Learn Java?

Before you know how to learn Java, you should be convinced about why you should learn it!

Learning Java has a lot of advantages when compared to other languages. You can perform any task in Java as there are rich libraries and plugins. Java is platform-independent at the source-code and binary levels, which means the code you compile once can be used anywhere. Since Java is object-oriented, the code is split into independent modules, making the code reusable and free from bugs.

Java has a lot of security features and cross-platform capabilities. It is also the right choice for data science and machine learning, of course, after Python and R. Many websites and web applications continue to be built on the Java platform, thus keeping the demand for Java developers and designers always on the higher side.

As per PayScale, a developer’s average salary range is $47,169 to $106,610 per year. best java training in vizag San Francisco and Arlington pay the highest salaries to their Java developers with about $97000 per year on an average.

Because of its many advantages and unique features, Java was still the most preferred language even after its first release 25 years ago. By learning Java, you get to code in Core Java and move in the direction of becoming a JavaScript expert, a web application developer using J2EE and related web technologies, principal architect, designer, and so on. Most of the Android phones have their operating system written in Java, which is about 88% of the total global smartphone market.

If you learn Java, it also becomes easier for you to learn any other OOP based programming language in less time.

Prerequisites

To learn Java, you must have a little idea about computer science. Java can be your first programming language to learn, but you should first be familiar with the following computer science concepts:

OOP Concepts

Since Java is an Object-Oriented Programming language (OOP), you need to know about polymorphism, inheritance, abstraction, encapsulation, and other OOP concepts. Learn more about OOP concepts.

How To Learn Java (Step by Step Guide)

Data Structures and Algorithms

A data structure is an assembly of data values that are organized, managed, and stored in a particular format. It also defines relationships between data values so that the values can be easily manipulated.

Java uses a lot of collection objects to organize and store data in different ways. For example, a simple list can store some integers, or names of students, or complete set of information that define a person using objects:Best java training in vizag

List<String> myList = new ArrayList<String>();
myList.add("James");
myList.add("Shane");
myList.add("Abby");
System.out.println(myList);

This will give the output as [James, Shane, Abby].

Similarly, algorithms like Binary search, merge sort, bubble sort, etc., are widespread, and you should be familiar with them to know the internal workings of Java collections.

Learn through the most upvoted data structures and algorithms tutorials and courses.

How to Set up the Environment

To set up Java in your machine, install JDK or Java Development Kit and JRE, i.e., Java Runtime Engine. You should have the required system memory space to install both. Both JDK and JRE can be downloaded from the Oracle website for any platform (Windows, macOS, Linux, etc.). It is simple to follow the instructions on the screen for installation; it is very straightforward. After installation, you have to set up the environment variables (PATH) on your machine. The path is nothing but the location where JDK and JRE have been installed (most likely C:Program Files).

IDE (Integrated Development Environment)

For easy development, build, and testing purposes, it is best to use IDE to concentrate on the coding aspect more. IDE helps you follow best practices in the code, prompts for compilation (and sometimes runtime) errors, gives suggestions, generates standard code, adds comments, and more. It is also easier to import and include libraries in your workspace when you use IDE. Some popular Java IDEs are:

How To Learn Java (Step by Step Guide)

1. Eclipse: Eclipse is a complete package for Java and J2EE development. You can add as many libraries and plug-ins as you want, and even though it consumes space, Eclipse is never slow. Download Eclipse here. You can also debug the code, write Junit tests, generate stubs and WSDLs, and easily add log statements. Eclipse is intuitive, and you can customize its features to suit your project. Apart from Java, you can use Eclipse as Python IDE, C/C++ IDE, and Scala using simple plug-ins. You can also download a lighter version of Eclipse, known as Easy Eclipse if you don’t want full features.

1. NetBeans: NetBeans provides rapid UI development, cross-platform support, and the best support for Java technologies.best java training in vizag It has powerful tools for HTML, JS, and CSS as well. NetBeans is fast, and you can even do project versioning and basic project management. NetBeans also supports C/C++, PHP, and JSP. You can refactor your code, check the correctness, and validate best practices—download Apache NetBeans.
2. IntelliJ IDEA: IDEA supports many languages and frameworks and has integrated version control systems, profiling tools, database tools, etc. Development becomes faster with auto-complete suggestions and dynamic compilation. It also gives context-based assistance for languages other than Java, like SQL, HTML, and JavaScript. You can leave all the repetitive and tedious tasks and focus on your business logic. The tool suggestions are intuitive, helping developers go on without breaking their flow—download IntelliJ IDEA.

How To Learn Java (Step by Step Guide)

Java is easy to learn, and you don’t have to spend too much time learning the concepts. Once you get the foundations right, you can start practicing.

If you already have the IDE set up on your system, try this simple program:

1. Create a new project, let’s say, MyFirstJavaProj.
2. Create a package named practice.
3. Inside this package, create a class called MyFirstProgram.java, and check on the checkbox to add the main method: public static void main(String[] args)
4. Just add the following code in the main method:

System.out.println(“Welcome to the Java World!”);

Run this program as a Java application, and the message will be displayed on the console.

Don’t worry about all the keywords used in the program. The point is that it takes just these many steps to make a Java project run! To understand these keywords and modifiers, read this short introduction to Java, and get started. You can take up the following excellent courses to further your practical learning experience:

How To Learn Java (Step by Step Guide)

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