Education and Career Forum

Tell me what are things should know as a Java Developer. What are the Important things a Java Developer should know?

As a Java developer, it is important to have a good understanding of the following:

• Java programming language: Java is an object-oriented programming language, so a good understanding of object-oriented concepts like inheritance, polymorphism, and encapsulation is important.
  
• Java development tools: Java developers should be familiar with Integrated Development Environments (IDEs) such as Eclipse and NetBeans, and have experience with version control systems like Git.
  
• Java frameworks: Java developers should be familiar with popular Java frameworks such as Spring, Hibernate, and Struts, and understand how to use these frameworks to build robust and scalable applications.
  
• Databases: Java developers should have a good understanding of relational databases, SQL, and Object-Relational Mapping (ORM) tools.
  
• Design patterns: Knowledge of design patterns such as Model-View-Controller (MVC) and Model-View-ViewModel (MVVM) is important for designing scalable and maintainable applications.
  
• Agile methodologies: Java developers should be familiar with Agile methodologies like Scrum and Kanban and understand how to work in an Agile development environment.
  
• Web technologies: Java developers should have a good understanding of web technologies such as HTML, CSS, JavaScript, and how to integrate Java applications with web technologies.
  
• Testing and debugging: Java developers should be familiar with testing frameworks such as JUnit and understand how to write unit tests, perform integration testing, and debug applications.

~Regards
Naubahar Shah
BBA, MCom, NET Qualified

A Java developer should learn about the Java ecosystems, OOPs patterns and concepts, writing reusable Java libraries, concurrency patterns, MVC patterns, JDBC, RESTful web services, popular web application frameworks, Java GUI frameworks, Ability to write clean, code versioning tools, and continuous integration etc.

As a Java developer, there are several important skills and knowledge areas you should be familiar with.

You should have a good understanding of Java's built-in data structures, such as arrays, lists, sets, and maps, and how to use them effectively.

You should be familiar with the Java concurrency API and understand how to write efficient and thread-safe code.

Understanding how objects are stored in memory, how garbage collection works and how to optimize the performance of Java applications by minimizing memory footprint.

You should have knowledge of SQL and how to use it to interact with a database from Java, such as using JDBC.

You should be familiar with popular Java frameworks such as Spring, Hibernate, and Struts, and have knowledge of how to use them to build efficient and scalable applications.

You should be familiar with web development concepts, such as HTTP, HTML, CSS, and JavaScript, and understand how to use Java to build dynamic web applications.

You should understand the principles of TDD and be able to write automated tests using frameworks such as JUnit.

Knowledge of common design patterns such as Singleton, Factory, Observer, etc. and how to apply them to solve common programming problems.

Familiarity with tools such as Git, Maven, and integrated development environments (IDEs) like Eclipse or IntelliJ, as well as an understanding of best practices for writing clean, maintainable, and well-documented code.