I was in the office of a competing recruitment firm, having a meeting with the company's CEO. One of the recruiters approached me while I was waiting because he recognized me from my LinkedIn profile picture.
"Balazs, can you help me?" he asked.
"I'm looking for a Java developer; could you tell me how well this candidate fits in your opinion?"
What is Java?
Java is a popular programming language. I won't bore you with its history or main features, which can be found in plenty of other articles on the Internet. Long story short, the main uses of Java are enterprise applications, mobile apps, and server-side development (backend development). Of course, Java can also be used in many other areas, such as game development, IoT, and so on.
Aside from the use case, it's important to remember that the foundation of Java is that the code the developer writes can run on any platform (for more information, look up Java Virtual Machine).
If you want to learn more about Java, continue reading:
Syntax and Programming Paradigms
Java is a statically-typed language, meaning variable types are explicitly declared at compile-time.
Java is primarily an object-oriented programming (OOP) language and follows a class-based inheritance model.
Java uses curly braces to delimit blocks of code.
Usage and Application
Tip for Hiring Managers
It is always worth looking at the entire job description and the full technology stack. From there, you will easily know what programming language knowledge is required and what frameworks and tools your candidate must know.
I've included icons for the most important, major frameworks. Along with them, it is worth knowing the programming languages. So you will immediately recognize that, e.g., a Spring developer is actually a Java developer who uses the Spring framework.
Use Cases of Java
Java can be used in a wide variety of projects. It has a long history, is known by many programmers, and is a very versatile programming language. Let's see what it is mainly used for:
a. Enterprise applications: A lot of enterprise software is written in Java. Java is robust and scalable, making it ideal for creating large enterprise applications.
b. Android App Development: Java is the official programming language for Android app development.
c. Server-side programming: Java's ability to handle multiple requests simultaneously and its support for multi-threaded processing make it a popular choice for server-side programming. Java-based frameworks such as Spring and Hibernate further simplify server-side development.
Java is also widely used in finance, healthcare, and education domains. Due to its versatility and flexibility, it is one of the most popular languages for developers working on various projects.
Pros of Java
a. Platform independence: Java is designed to run on any platform without requiring specific hardware or software configurations.
b. Scalability: Java is highly scalable, making it a popular language for developing enterprise-level applications.
c. Robustness: Java is known for its reliability and robustness, with built-in error handling and memory management features.
Cons of Java
a. It takes a lot of time and energy to learn.
b. Relatively complex syntax compared to other modern languages. (e.g., Python)
c. Nowadays, it is less suitable for front-end web development
a. Browser compatibility issues
b. Memory management can be challenging
c. Less suited for large-scale applications
Both languages have their strengths and weaknesses, and choosing the right language depends on the project requirements and goals. Factors such as performance, scalability, and support are key factors to consider when making this decision. But you, as an HR professional, will have nothing to do with these.
It will be much more crucial if you can identify the frameworks (which framework relates to which programming language) and interpret the expertise, tools, and so on that are truly required for the role.