What Is Java Used For?

What Is Java Used For?

Java is a popular programming language chiefly used for software development. It was developed by Sun Microsystems, California, in 1995.

It is platform independent, which means that Java code written in one operating system can be used in another.

Additionally, Java is concurrent, i.e., we can run several programs simultaneously.

Because of these powerful features, programmers prefer to use Java to develop desktop and mobile applications. Today, applications made in Java are used in more than 3 million devices. And there are 9 million Java developers worldwide!

But why are the numbers so high?

One major reason is that Java is used in a wide range of applications. In this blog, we will talk about Java's applications, the reasons to learn the language, and its pros and cons.

So, if you want to learn more, continue reading


Applications of Java

Having a wide range of applications opens the gate to more career opportunities.

Let's take a look at the major Java applications and the reasons why Java is suitable for each field.

Desktop Application

Java is widely used to create graphical user interfaces (GUI) for desktop applications.

It has frameworks like Swing, AWT, Griffon, and JavaFX that provide pre-built components like buttons, menus, form fields, etc.

So if you plan to build a desktop application, Java will make your development process much more efficient.

Here are some desktop tools developed with Java are:

  • Acrobat Reader
  • Antiviruses like Kaspersky
  • ThinkFree, etc.

Android Mobile Application

Around 46.2% of Android applications (including the Android Operating System itself) are developed using Java.

Not only that but the popular IDE Android Studio is also written in Java. So if you are into developing Android apps, Java is a language you must learn.

Android apps developed with Java are

  • Netflix
  • Tinder
  • Uber, etc.

Embedded Systems

Embedded Systems are low-level systems that combine many small computing units to form a larger system. For example, chips, processors, sim cards, sensors, etc.

Here are some reasons why Java is used to program embedded systems:

  • Java is fast, which is important in low-power processors.
  • Java is robust, which means it can handle exceptions safely.
  • Java is efficient. Hence, it only takes 130 KB on smart cards and sensors.

Scientific Applications

Java is used to develop scientific applications because of its following features:

  • It provides a fast, secure, and highly portable environment for scientific applications involving scientific calculations and mathematical operations.
  • It can perform very complex mathematical calculations that give the same result on different platforms.

Popular scientific applications like MATLAB use Java for both front-end and back-end.


Web Application

Web Applications are client-server systems that are accessed through the browser interface. Java is primarily used for the back-end side of web development, i.e., for coding server-side applications.

We use Java for web application development due to the following reasons:

  • It provides web frameworks like Spring, Struts, Hibernate, and Apache Hadoop.
  • It provides applets that run in a web browser.

Java is used in popular web-based applications like LinkedIn, Ali Express, Amazon, etc.


Software Tools

Software Tools are computer programs developers use to write, analyze and debug code or programs.

Tools such as NetBeans IDE, IntelliJ Idea, Eclipse, etc., are built using Java.


Why Learn Java?

Let's start with the most obvious reasons: salary, job satisfaction, and job openings.

According to GlassDoor, a Java Developer job falls under the top 10 best jobs in America in 2022. Here are some statistics to back that up:

Median Base Salary: $107,099

Job Satisfaction: 4 out of 5

Total Job Openings: 10,201

If you have a satisfying job that pays you well, what more can you ask from your career? You've basically hit the jackpot when it comes to your life!

And apart from job satisfaction and a high salary, you should also learn Java for its technical efficiency and its wide areas of application.

So if you learn Java, you can develop systems like

  • desktop applications,
  • mobile applications,
  • embedded systems,
  • web applications,
  • software tools,
  • video games,
  • trading applications,
  • IoT applications,
  • enterprise systems,
  • cloud-based applications, and many more.

As you can see, learning Java means you now have more career options.


Benefits and Drawbacks of Java

While Java is popular and used widely, it also comes with a few drawbacks. So let's take a look at both the positive and negative sides of Java.

Benefits of Java

  • Java removes the complex features of C and C++, such as pointers, structures, and unions, making the language simpler.
  • Java uses an object-oriented programming approach. This helps us to effectively organize a large code base by breaking it into smaller chunks.
  • Java supports multithreading and concurrency, which means more than one process can run independently without affecting others.
  • Since Java does not have pointers, it is more secure. Pointers lead to unauthorized memory access.
  • Java is platform-independent, which means that code written in Windows can also be used in Mac, Android, or iOS.
  • Java performs automatic garbage collection, which means we do not have to manually free the computer memory throughout the program.
  • Java has great community support. Almost all Java-related queries on Stack Overflow are resolved.

Drawbacks of Java

  • As Java supports automatic garbage collection, it continuously runs in the background. This hampers the performance and speed of the system.
  • Even though Java provides frameworks like Swing and SWT for GUI development, they are not well developed. So, they are unsuitable for building complex GUIs.
  • Java does not have facilities to back up users' data.
  • Developers need to pay fees to access the full features of Java.

Frequently Asked Questions

1. Is it difficult to learn Java?

No, it is not difficult to learn Java. You just need a proper learning approach and strong programming basics.

The best way to learn Java is by taking interactive courses. With most interactive courses, you get lessons, quizzes, and challenges that make learning fun and easy.

You can check out our interactive Java course to start your programming journey.

2. Is Java enough to get a job?

Yes, you can certainly get an entry-level Java developer job with only Java skills. Once you start working, you will need more skills like databases and Git.

3. Can I learn Java in 2 months?

Yes, you can learn Java in 2 months.

If you come to Java with prior programming experience, you can learn the language in 2 months.

But if you are a complete beginner, it might take you a bit more time. In any case, do remember to learn the language consistently to get better at it.

4. How long will it take to learn Java?

The time required to learn Java depends on the individual. Other factors like prior programming experience and dedication level also determine how quickly you'll learn the language.

However, if you are a beginner, you can easily learn the basics of Java in 2-3 months.

5. What is the hardest programming language?

Programming languages like C++, Haskell, LISP, and Prolog are considered the hardest programming languages.

Languages like C++ give us greater freedom to manipulate computer hardware. So, C++ requires a deeper understanding of how computers respond to code instructions.

On the other hand, programming languages such as Haskell, LISP, Prolog, etc., use functional programming or logic programming approaches, which are not easy for beginners to understand.