Do you want to know how to become a Java developer? If so, you’re in luck! Java is one of the most popular programming languages in the world, and businesses are starting to hire skilled developers more than ever.
It is said that there are over 9 million Java developers in the world. However, this isn’t easy to quantify in any given way. But, Oracle does say that there are over 25 billion active cloud Java virtual machines.
In this blog post, we will teach you everything you need to know about how to become a Java developer. We will discuss what skills you need to learn, what certifications you should pursue, and how to find a job in this exciting field!
Keep reading to learn everything you need to know. Jumpstart your career as a Java developer by discovering all of the needed information.
What Is Java?
Java is a programming language that was first released in 1995. It is class-based and object-oriented, meaning that it is organized around objects rather than actions.Java is one of the most popular programming languages in the world, and it can be used for developing web applications, mobile apps, desktop apps, and more.
There are four primary editions of Java:
Java Standard Edition (SE): This is the most basic edition of Java, and it is used for developing desktop applications.
Java Enterprise Edition (EE): This edition of Java is used for developing web applications.
Java Micro Edition (ME): This edition of Java is used for developing mobile apps.JavaFX: This edition of Java is used for developing desktop applications with a graphical user interface (GUI).
Although Javascript shares a similar name, the two programming languages are quite different.
While Java is a compiled language, Javascript is an interpreted language.
This means that Java code must be converted into a machine-readable format before it can be run, while Javascript code can be run without being compiled first.
Another difference between the two languages is that Java is a statically typed language. On the other hand, Javascript is dynamically typed.
This means that variables in Java must be declared with a specific data type (e.g., int, String, float), while variables in Javascript do not need to be declared with a data type.
Object-Oriented Programming: What Is It?
In Java, everything is an object. An object is a piece of data that has certain characteristics, and it can perform certain actions. For example, a person is an object.
People have certain characteristics (name, age, height, etc.), and they can perform certain actions (walk, talk, eat, etc.).In Java, we create objects by defining classes. A class is like a blueprint for an object. It defines the characteristics and actions that an object can have.
There are four principles of programming in this type of language:Encapsulation: This refers to the idea of hiding data within an object. Data encapsulation is important because it helps to keep data safe from being accessed or modified by other parts of the program.
Abstraction: This refers to the idea of only exposing the relevant details of an object, and hiding the rest. For example, when we talk to someone, we don’t need to know how their digestive system works in order for us to have a conversation. We only need to know the relevant details (name, age, etc.).
Inheritance: This refers to the ability of one class to inherit characteristics and actions from another class. For example, a child inherits characteristics from their parents.
Polymorphism: This refers to the ability of an object to take on many different forms. For example, a person can be a student, an employee, a friend, etc.
Who Is a Java Developer?
A Java developer is a programmer who specializes in developing applications using the Java programming language. Java developers typically have a bachelor’s degree in computer science or a related field.
They should also be proficient in object-oriented programming, and they should have experience developing web applications and mobile apps. The work will depend on the level of experience (junior, mid-level, senior).
Junior Java Developers
- Develop simple applications using the Java programming language
- Ensure that the code meets standards and is of high quality
- Write unit tests to test the code they have written
Mid-Level Java Developers
- Develop complex applications using the Java programming language
- Optimize code for performance and scalability
- Write unit tests and integration tests
- Debug applications
Senior Java Developers
- Lead a team of junior and mid-level developers
- Design complex applications
- Optimize code for performance and scalability
- Write unit tests and integration tests
What Are Java Developers Responsible for?
The work of a Java developer can vary depending on their level of experience and the size of the company they work for. In general, Java developers are responsible for developing applications using the Java programming language.
They may also be responsible for optimizing code for performance and scalability, writing unit tests, debugging applications, and leading a team of junior and mid-level developers.
Developing and Testing Code
One of the most important responsibilities of a Java developer is to develop code that meets standards and is of high quality. To do this, they need to write unit tests to test the code they have written. Unit tests are small pieces of code that test specific functionality in an application.
For example, a unit test might check that a method in an application returns the expected result when given a certain input. Java developers also need to debug applications. This means finding and fixing errors in the code.
Furthermore, they need to ensure that the code is scalable, which means that it can handle increased loads without breaking. To do this, they need to write integration tests, which check how different parts of an application work together.
For example, an integration test might check that a user can login to an application and then view their profile page. Java developers also need to optimize code for performance. This means making sure that the code runs quickly and efficiently.
Designing and Optimizing Applications
Another important responsibility of a Java developer is to design applications that are complex and scalable. Scalability refers to the ability of an application to handle an increased load without breaking.
For example, if an application is being used by more people, it needs to be able to handle the increased traffic without crashing.
Java developers need to optimize code for performance and scalability. This means making sure that the code runs quickly and efficiently.
Also, they need to design applications that are easy to use and have a good user interface. User interface refers to the way an application looks and feels. It should be easy for users to navigate and use the features of an application.
Leading a Development Team
In some cases, Java developers may also be responsible for leading a team of junior and mid-level developers. This means that they would be in charge of assigning tasks, reviewing code, and providing feedback.
Leading a team of developers requires excellent communication skills and the ability to work well with others. Also, Java developers need to be able to work with different teams in order to create a cohesive application.
For example, they might need to work with the front-end development team to ensure that the user interface is consistent with the rest of the application.
Debugging Problems
When an application breaks or doesn’t work correctly, it’s the Java developer’s job to find and fix the problem. This process is called debugging. Debugging can be difficult, because it often requires finding errors in code that is thousands of lines long.
To debug effectively, Java developers need to have strong problem-solving skills. They also need to be able to think creatively, because sometimes the solution to a problem is not obvious.
In addition, Java developers need to be able to work with different teams in order to create a cohesive application. For example, they might need to work with the front-end development team to ensure that the user interface is consistent with the rest of the application.
Updates and Program Architecture
As new versions of Java are released, it’s the Java developer’s job to update the applications they have written to use the new version. In some cases, this may require making significant changes to the code.
It’s also the Java developer’s responsibility to maintain the program architecture.
This means making sure that the code is well organized and easy to understand. Maintaining a good program architecture is important, because it makes it easier to add new features and fix bugs.
Besides, the IT infrastructure team might need help in setting up and configuring the servers. Java developers need to be able to work with different teams in order to create a cohesive application.
End-User Documentation and Security/Performance
In some cases, Java developers may also be responsible for creating end-user documentation. This is documentation that explains how to use the application.
It’s also important for Java developers to keep security and performance in mind when they are writing code. They need to make sure that the code they write is secure and efficient. Otherwise, it could lead to serious problems.
They usually do this by following best practices and using security tools. Some of them are:
- using a static code analysis tool
- using a web application firewall
- setting up proper authentication and authorization
Assisting IT Vendors
Another responsibility of Java developers is to assist IT vendors. These are companies that have software developers for customers or those that provide hardware to businesses.
Java developers may need to help IT vendors by testing new software or troubleshooting problems. This requires excellent communication skills and the ability to work well with others.
Vendors usually utilize a ticketing system to track issues. Java developers need to be able to work with different teams in order to create a cohesive application.
For example, they might need to work with the front-end development team to ensure that the user interface is consistent with the rest of the application.
Working With The IT Department
Java developers need to work closely with the IT team. The IT team is responsible for maintaining the computers and networks that the Java developers use.
It’s important for Java developers to be able to communicate effectively with the IT team. They need to be able to explain their needs and understand the limitations of the system.IT teams operate with a lot of different technologies. Java developers need to be able to work with different teams in order to create a cohesive application.
For example, they might need to work with the front-end development team to ensure that the user interface is consistent with the rest of the application.
Skills Needed for Java Developers
To be a successful Java developer, you need to have strong problem-solving skills. You also need to be able to think creatively, because sometimes the solution to a problem is not obvious.
It’s also important to have excellent communication skills and the ability to work well with others. Java developers need to be able to explain their needs and understand the limitations of the system.
Here are some other skills required for successful Java developers:
Development Capabilities
As a Java developer, you need to be able to write code that is efficient and easy to understand. You also need to be familiar with the Java Development Kit (JDK).
The JDK is a software development kit that contains everything you need to develop Java applications.
Database Management
Java developers often work with databases. To be successful, you need to be familiar with database management systems (DBMS). A DBMS is a software system that allows you to create, update, and delete data.
Web Development
Java developers often work on web applications. To be successful, you need to be familiar with HTML, CSS, and JavaScript. These are all programming languages that are used to create web pages.
SQL Abilities
SQL is a programming language that is used to manipulate data in databases. As a Java developer, you need to be able to write SQL queries. Queries are commands that allow you to retrieve data from a database.
Code Testing and Debugging
It’s important for Java developers to be able to test and debug their code. Code testing is the process of verifying that a program works as intended. Debugging is the process of finding and fixing errors in code.
There are many tools available to help with code testing and debugging. Some of these tools are included in the JDK.
Project Management
Java developers often work on projects with other developers.
To be successful, you need to be familiar with project management tools and techniques. Project management is the process of planning, organizing, and controlling a project.
Some project management tools that Java developers use include Jira and Confluence. These tools help to track tasks, bugs, and features.
Time Management
Java developers need to be able to manage their time effectively. They need to be able to prioritize tasks and meet deadlines. Time management is a critical skill for all developers, but it’s especially important for Java developers.
There are many time management tools and techniques that you can use to improve your productivity. Alright, now let’s get to the important part of how to become a Java developer.
How to Become a Java Developer
The first step to becoming a Java developer is to learn the Java programming language. You can do this by taking a class, reading a book, or watching tutorials.
Learn Java
If you want to take a class, you can find one at your local community college. If you want to learn on your own, there are many resources available online.
Some of the best books for learning Java include “Java for Dummies” and “Head First Java.” You can also find excellent Java tutorials on YouTube.
Once you have learned the basics of Java, it’s time to start practicing. The best way to practice is by working on projects. You can find project ideas online or in books such as “Project Euler.”
Core Java
Once you have learned the basics of Java, it’s time to start learning Core Java. Core Java is a set of libraries that are used for developing Java applications.
Some of the best books for learning Core Java include “Effective Java” and “Java Concurrency in Practice.” You can also find excellent Core Java tutorials on YouTube.
Java EE
After you have learned Core Java, you should start learning Java Enterprise Edition (Java EE). Java EE is a set of libraries that are used for developing enterprise applications.
Furthermore, you will need to learn how to use an IDE. IDEs are software tools that help you write, debug, and test code. Some of the most popular IDEs for Java include Eclipse and IntelliJ IDEA.
There are many resources available for learning Java EE. Some of the best books for learning Java EE include “Java EE Development with Eclipse” and “IntelliJ IDEA Essentials.”
Servlets and JSPs
After you have learned Java EE, you should start learning about servlets and JavaServer Pages (JSPs). Servlets are small programs that run on a server.
They are used to process requests from clients. JSPs are files that contain HTML code and Java code. They are used to create dynamic web pages.
Some of the best books for learning about servlets and JSPs include “Java Servlet Programming” and “Head First Servlets & JSP.”
Databases
As a Java developer, you will need to learn how to use databases. Databases store data in an organized way to be retrieved quickly.
There are many different types of databases, but the most popular ones used by Java developers are MySQL and Oracle.
To learn how to use databases, you can find resources online or in books such as “Oracle Database 11g: SQL” and “MySQL for Dummies.”
Spring and Hibernate Frameworks
After you have learned how to use databases, you should start learning about the Spring and Hibernate frameworks. The Spring framework is a set of libraries that are used for developing Java applications.
It helps with tasks such as managing data and transactions. The Hibernate framework is a set of libraries that are used for developing Java applications that access databases.
Some of the best books for learning about the Spring and Hibernate frameworks include “Spring in Action” and “Hibernate in Action.”
DevOps
As a Java developer, you will also need to learn about DevOps. DevOps is a set of practices that helps developers and operations teams work together.
There are many resources available for learning about DevOps. Some of the best books for learning about DevOps include “The Phoenix Project” and “The DevOps Handbook.”
GitHub and Git
Last but not least, you will need to learn about GitHub and Git. GitHub is a website that allows developers to share code. It is also a great place to find code for your projects.
Git is a version control system that helps developers keep track of changes to their code.
To learn more about GitHub and Git, you can find resources online or in books such as “Pro Git” and “GitHub Essentials.” You can also find excellent GitHub and Git tutorials on YouTube.
RESTful Web Service
When you have learned all of the above, you should start learning about RESTful web services. RESTful web services are a set of standards that define how web services work.
To learn more about RESTful web services, you can find resources online or in books such as “RESTful Java with JAX-RS 20.”
Develop Project Management Capabilities
To further your journey into becoming a Java developer, it is important to develop project management capabilities. This will allow you to better understand how to work on projects with others, as well as give you an understanding of the different tools available to help manage these projects.
Jira and Confluence are two tools that Java developers use for project management.
Both Jira and Confluence are software products that help developers track tasks, bugs, and features. They also help developers share information about their projects with other team members.
To learn more about Jira and Confluence, you can take a class, read a book, or watch tutorials.
Band With Communities Relevant to Java Development
It is also important to get involved with communities relevant to Java development. There are many online forums, such as Stack Overflow, that are full of experienced Java developers.
By getting involved with these communities, you can learn from other developers and share your own knowledge. This will help you to improve your skills and make connections with other developers.
Furthermore, many companies post job openings on these forums. So, by being active in these communities, you can also increase your chances of finding a job as a Java developer.
Build Portfolio and Practice Skills
Once you have learned the basics of Java and developed some project management skills, it’s time to start building your portfolio.
A portfolio is a collection of projects that you have worked on. It is a great way to showcase your skills to potential employers.
The best way to build a portfolio is by working on personal projects. These can be anything from simple games to complex applications.
Once you have built up your portfolio, it’s time to start practicing your skills. You can do this by working on more projects or taking online courses.
The best type of portfolio will focus on the quality of the projects, not the quantity. It is better to have a few well-crafted projects than a large number of poorly made ones.
Moreover, don’t forget to keep your portfolio up-to-date. As you build new skills and work on more projects, be sure to add them to your portfolio.
Create a Solid Resume
The next step in becoming a Java developer is to create a solid resume. Your resume should list your skills, experience, and education. It should also highlight any projects you have worked on.
If you don’t have much work experience, you can include relevant coursework or personal projects in your resume. You can also list any awards or recognitions that you have received.
Once you have created your resume, it’s time to start applying for jobs! Nevertheless, don’t get discouraged if you don’t get hired right away. It often takes time to find the right job.
In addition, don’t forget to keep your resume up-to-date. As you gain more experience and work on more projects, be sure to add them to your resume.
Look for Job Opportunities
There are many ways to find job opportunities as a Java developer. You can search online job boards, such as Indeed or Monster. You can also look for jobs on company websites or contact companies directly.
Another great way to find jobs is through networking. You can attend meetups or conferences, or reach out to your network of contacts.
When applying for jobs, it’s important to tailor your resume and cover letter to each position. This will show the employer that you are a good fit for the job.
It is also important to practice interviewing before your actual interviews. This will help you to be more prepared and confident when meeting with potential employers.
Furthermore, don’t forget to negotiate your salary. Employers expect you to negotiate, so don’t be afraid to ask for what you deserve.
Practice for Your Job Interview
The final step in becoming a Java developer is to practice for your job interview. This includes preparing for common interview questions, as well as doing a mock interview.
You can prepare for common interview questions by researching the company and the position. You can also practice your answers to these questions.
Moreover, it’s a good idea to do a mock interview with a friend or family member. This will help you to get more comfortable with the interviewing process.
Consider Becoming a Self-Employed/Freelance Developer
Once you have a few years of experience under your belt, you may want to consider becoming a self-employed or freelance developer. This can be a great way to work on interesting projects and set your own hours.
There are many platforms that you can use to find clients, such as Upwork or Freelancer. You can also reach out to companies directly or network with other developers.
When starting out as a self-employed developer, it’s important to set realistic rates and expectations. You should also make sure that you have a contract in place before beginning any work.
As a freelance developer, you will need additional skills, such as project management and marketing. You will also need to be comfortable working with clients. Nevertheless, being a freelance developer can be a great way to gain more experience and control over your career.
Continue Developing Your Skills
It is important to continue developing your skills as a Java developer. You can do this by taking online courses, reading books, or attending conferences. You should also try to stay up-to-date with the latest trends in the industry.
By continuously learning, you will be able to keep up with the ever-changing field of java development. This will make you more marketable and increase your chances of getting hired.
Furthermore, continuing to develop your skills will help you to progress in your career. You may even be able to move into a management or leadership position.
Your Java Career Taken to New Heights
Now that you understand what Java is, what a Java developer is, what skills are needed, and the process for how to become a Java developer, it’s time to take your Java career to new heights!
If you follow the steps outlined in this article, you will be well on your way to becoming a successful Java developer. Just remember to be patient, keep learning, and don’t forget to enjoy the process!
If you’re interested in finding Java jobs, get in touch with us and we will happily accommodate your needs.
