Java Programming Language Explained: Everything You Need to Know

Former Apple CEO Steve Jobs had once remarked that everyone should learn how to program “because it teaches you how to think.” Coding is the fuel that keeps the software running efficiently. It is crucial to operate smartphones, computers, and tablets without glitches. Multiple programming languages, such as Javascript, etc., serve unique purposes like building applications or websites. In fact, the Java programming language is used in everything from complex business applications to Android apps. James Gosling developed it in May 1995 as a core component of Sun Microsystems—currently owned by Oracle. It is now used by nearly 30.55% of developers worldwide, according to Stack Overflow’s 2023 Developer Survey. So, let’s take a comprehensive look at the Java programming language, how it works, and why it is significant for app development.

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What is Java?

Java programming language is widely popular because of its flexibility, scalability, and versatility across various platforms. It is a high-level, class-based, Object-Oriented Programming (OOP) language with very few implementation dependencies.

Essentially, the Java language organizes code around objects, making it easier to manage complex applications consequently. It simplifies development because Java coding is closer to human language than machine code.

Java not only boasts extensive libraries but also offers robust performance in addition to strong community support. This is why beginners prefer Java coding; it also explains its widespread use, given that it is included in the top 10 most popular programming languages.

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Key Features of Java

The Java programming language has a range of features that make it one of the most powerful languages for software development. Here are some of them:

1. Write Once, Run Anywhere (WORA)

The Java language is known to run across multiple platforms due to its portability. Java can be dubbed as a universal translator for programmers. In other words, the code is compiled into a bytecode format that runs on any device with the Java Virtual Machine (JVM). The feature eliminates the need to rewrite code for different operating systems.

2. Object-Oriented Programming

Java is an object-oriented programming language like Javascript, Python, and Ruby, among others. It allows developers to build programs around objects. They are self-contained entities that combine data (attributes) and the operations that act on that data (methods). Java can enjoy code reusability, maintainability, and modularity owing to OOP.

3. Easy-to-Learn Syntax

Java has a simple syntax compared to other languages. For instance, glance through a Javascript tutorial to get a glimpse of its relative complexity. (Javascript is the most popular programming language in the world.) Compared to that, Java’s syntax is clear and easy to learn, especially for those familiar with C or C++. It improves the accessibility of Java coding for beginners.

4. Robust and Secure

Some of Java’s features like strong typing, automatic memory management, and sandboxing, enhance security. They support the development of secure applications in enterprise environments. Moreover, Java enforces strict data types and memory management that help prevent errors and crashes. It raises the overall reliability and stability of Java applications.

5. Rich API (Application Programming Interface) Library

Java has an extensive collection of built-in libraries and frameworks that provide pre-written code for common tasks. For example, data structures, networking, and Graphical User Interface (GUI) development. Developers can save their time and effort when building applications.

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Benefits of Learning Java

The Java programming language is a valuable addition to the arsenal of both beginners and experienced programmers. Let’s check out some of the notable advantages:

1. High Demand in the Job Market

Java is one of the most commonly used programming languages in the world. Many organizations from startups to large enterprises are looking for coders proficient in Java. It was also among the top 10 programming languages of the future by Analytics Insight. A junior Java developer stands to earn an average salary of ₹4,05,000 per year. These factors burnish the allure of Java coding for beginners.

2. Versatile Language for Many Applications

Java’s WORA principle allows you to develop applications that can run on various platforms, such as Windows, Mac, or Linux, without needing to rewrite the code. As a result, developers can use Java in a wide range of applications, including web development, mobile apps, enterprise-level backend systems, cloud computing, etc. It is, thus, a no-brainer for many types of development projects. 

3. Large and Supportive Community

Most popular programming languages offer a wide pool of resources to developers. For instance, you will find several JavaScript tutorials, Python forums, etc., online. Similarly, the Java programming language has an active community of developers. It enables developers to access a wealth of resources, such as forums and extensive documents. These resources can help troubleshoot any issues people encounter during their learning journey.

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Real-World Applications of Java

The Java programming language powers a lot of applications across various domains. Let’s see how:

1. Android App Development

Many Android applications use Java. The apps on your smartphone contain Java coding. Some of the biggest Android apps such as Instagram, Spotify, Twitter, and WhatsApp use Java.

2. Enterprise Applications

Java is useful for building complex business applications as it is stable and secure. For example, financial trading systems, e-commerce platforms, and healthcare information systems use Java to develop their workflows.

3. Web Applications 

Java plays a crucial role in web development, particularly on the back-end side. Developers use Java to build several popular web servers and frameworks. They allow developers to create scalable and dynamic web experiences.

4. Big Data and Cloud Computing

Java is handy while handling large datasets, making it valuable for big data processing and cloud-based applications. Java is only going to become more entrenched for this purpose as there is a rise in data volumes.

5. Scientific Computing

Java is ideal for scientific applications because of its robust nature and the wealth of scientific libraries. This enables researchers to use Java for analyzing data, performing simulations, and developing scientific tools accordingly.

6. Embedded Systems

Java can run on devices with limited resources. They are suitable for embedded systems programming. Smart TVs, routers, and other Internet-connected devices often use it. 

7. Desktop Applications

Many coders use Java to develop traditional desktop software, resulting in many productivity tools and business applications.

8. Getting Started with Java

“Code is like humor. When you have to explain it, it’s bad”, according to Cory House, a famous software developer. This is why aspiring coders must leverage Java language courses online to get a grasp of the language. They can network with senior developers and experts to procure a better understanding. Take up projects and experiment with the language for building a portfolio to share with potential employers.

Elevate Your Career With Emeritus

There are no signs of Java becoming obsolete in the near future, which means there are going to be plenty of job opportunities for aspiring developers. It becomes imperative to take advantage of a Java language course to hone your coding skills. Emeritus offers a range of information technology courses curated for professionals looking to master Java coding, among other things. These courses provide practical insights relevant to the industry with experts offering case studies to help augment your understanding. Sign up for one of these courses and begin your journey toward securing your future!

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