What are the uses for Java? With definition and categories

By Indeed Editorial Team

Published 8 April 2022

The Indeed Editorial Team comprises a diverse and talented team of writers, researchers and subject matter experts equipped with Indeed's data and insights to deliver useful tips to help guide your career journey.

Learning to program with Java provides you with a set of skills for various industries, including financial services, retail, health care and manufacturing. Some employers may require Java skills to perform the responsibilities of the role. Understanding this tool may help you learn how to use it in your career. In this article, we discuss what the uses for Java are, including its definition and benefits.

Related: 10 of the most in-demand coding languages and their uses

What are the uses for Java?

Java is an open-source programming language and computing platform first released in 1995. It's general-purpose, object-oriented and flexible. Originally made for television, Java's now adaptable for many uses. You can find Java in a wide variety of applications, including web servers, enterprise software, video games and mobile apps. Java gives developers the ability to create interactive, networked and multimedia applications. It's for both desktop and mobile use, making it helpful for any business that needs to reach its customers on all platforms.

The skill of programming is highly in demand in the modern workforce. Java skills, in particular, are useful to have because Java is scalable, secure and able to run virtually anywhere. It comes with a programming library, which provides the standard functions for an app developer to use in making programmes. This library contains many features that the Java programmer may find helpful when developing apps, including mathematical functions and string handling. It's a general-purpose language with a syntax similar to C and C++.

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16 industry-specific uses for Java

Java has a broad community of developers. Many fields make use of Java, from the security industry to education. Here are some specific uses:

1. Java in CCTV

The Java programming language is one of the main programming languages for closed-circuit television control systems. This is because of its cost-effectiveness and reliability. Java also has top-rated performance among other mainstream programming languages for CCTV and contains features like concurrency and garbage collection.

2. Java use in creating graphics

Java is a popular programming language that creates graphics. Java graphics are in mobile apps, 3D applications, animations and simulations. These graphics use the Java 2D API. It's a cross-platform language that allows creators to develop graphics on most operating systems. In addition to its high performance, the Java 2D API is highly customisable.

3. Java and mobile app development

Some mobile developer tools that generate software for operating systems use Java. If you want to create a mobile app for certain operating systems, you may likely use this programming language. You may use it through development tools, emulators and programming libraries.

4. Desktop GUI applications and Java

Java graphical user interface applications are the most common type of Java application. You can use Java GUI applications on a desktop, and they can run on any operating system with a compatible Java virtual machine. The JVM interprets Java programmes and runs them on the computer. You can make Java programmes in byte code, which is the JVM then interprets.

5. Web applications and Java

Java is one of the most popular programming languages for the server-side. It builds applications that work together on a network and communicate with other programmes or host websites. Java's relationship with HTML and CSS has strengthened over time, as these three languages have become more popular.

6. Web servers and Java

Web servers are central to the operation of websites. They usually provide access to an organisation's data and information, which is often what people want when they visit a website. Programmers run web servers with different programming languages, including Java, Python and PHP. The Apache HTTP Server, which is what you use when you visit most websites, uses Java.

7. Science applications and Java

Many scientists are turning to Java for their needs because it's the only programming language that can handle complex mathematical operations without causing errors. It also allows scientists to write applications that work on different platforms and with many operating systems. One of the major benefits of Java is that it easily ports to other systems. This makes it one of the best choices for writing scientific applications involving calculations.

8. Business applications and Java

The Java programming language is one of the most widely used in business applications. Java is a general-purpose programming language that is very similar to the C++ language. Business applications use it because it's a relatively easy programming language to learn. You can find Java in large corporations for its quick development and in small businesses that build complex applications with little programming knowledge.

9. Java and embedded systems

A software development kit, Java 2 Micro Edition, is a high-level collection of tools that implement Java-based programming for embedded systems. Java can run on embedded systems, computers and cell phones. Some use it as a scripting language for web servers and as a user interface toolkit. It's an object-oriented programming language that creates executable code.

10. Java and application servers

Application servers enable applications to distribute across many machines or data centres. The application server provides the necessary infrastructure to support the application and manage the processing of user requests. An application server is a computer that provides the functionality required to support one or more applications. Programmers often use the two together because of the power of the Java language and the wealth of features provided by an application server.

11. Java and applications for enterprises

Java, as a programming language, started for enterprise applications. Java develops applications for business, government and the wider public. Java applications are platform-independent, like HTML, but they can make use of some of the features of the operating system on which they're running.

12. Big data technologies and Java

Java is a robust language with several libraries for data processing, streaming and interacting with databases. These libraries make it easier to do the necessary tasks when coding applications. Developers can create and launch complex and scalable applications quickly in a highly secure environment with Java.

13. Gaming applications and Java

Java is in many industries, including gaming, and has as few implementation dependencies as possible. This makes it an attractive programming language for developing cross-platform applications, especially mobile games. It helps with features like in-game purchases and necessary elements, such as network communication and object movement for online games.

Related: How much does a game designer make and what are their skills?

14. The Internet of things and Java

Java powers the Internet of things (IoT) and is the core of many of its devices. It's also a very popular programming language to use for IoT devices because it's easy to learn and has a large user community and runs on most operating systems. Java helps develop devices such as smartwatches, home automation technologies, medical equipment and other Internet-connected devices.

15. Java and cloud-based applications

Java has become a potent tool for developing cloud-based applications. Cloud-based applications are becoming the standard for many businesses. They provide users with an easy way to access data from a remote location. They allow quick access to information, with no software installations.

16. Java and distributed applications

Java can create distributed applications. These are programmes that run on two or more computers connected by a network. Distributed applications solve computational problems for which there are no other solutions available.

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Benefits of using Java

Java has become one of the most popular programming languages in the world because of its features, the availability of Java development tools and its compatibility with different operating systems. The following are some of the other benefits of using Java:

  • free to use and instal

  • object-oriented language, which makes it easier for programmers to use

  • has a large set of libraries for different purposes, like GUI libraries, which make developing applications easier

  • allow users to create both small and large programmes

  • easy to write simple programming tools for the end-user in just one hundred lines of code

  • still one of the most popular languages used by developers all over the world

  • less prone to errors

  • cross-platform integration system allows usage with computing platforms without causing problems

  • easy to learn compared to other programming languages

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