The path to becoming a senior Java developer is through learning and years of practice. One must start with understanding the very basics and move on towards more advanced topics related to the language.
Here is a simple ‘how-to’ guide that you can follow:
Step 1: Master The Fundamentals Of Java
Mastering the fundamentals of Java is your first step in becoming a good software developer. This covers all the basics such as data types, variables, conditional statements, etc. You can find numerous resources online to learn these basic concepts from different teachers and schools online. Some high-quality courses are offered by Udemy and Tutsplus.
Step 2: Acquire Core Programming Skills
A solid understanding of Object-Oriented Programming (OOP) is required in order to do any programming in Java. Apart from the fundamentals, OOP skills include learning about design patterns and class hierarchies. You can find numerous free resources online that teach these concepts with examples.
Step 3: Learn The Standard Packages
This is a must-do for all java developers since they provide a very important foundation to the language. Learning these packages effectively helps in reducing code duplication and increases velocity when working on larger projects involving hundreds of classes. Some core packages include:
- Collections – provides different data structures like lists, maps, queues, etc
- IO – deal with various data streams like UTF8 encoded text files or binary streams, etc
- Security – provides security features like authentication and authorization, etc
Step 4: Learn More Packages
The ‘Standard’ packages are just a small subset of the numerous packages available in the Java world. A set of common libraries like Spring, Hibernate, JPA helps developers build web applications faster. Newer technologies like Android software development require you to know about libraries like Retrofit, RxJava, etc. You can find numerous video tutorials online on different java packages. Moreover, there are books that list out all the standard and non-standard APIs. Some examples include the Oracle API documentation guide.
Step 5: Get Certified Courses
To get certified as a professional java developer (either for students or professionals), you will need to learn about specific topics like Swing, JavaServer Faces (JSF), Java Persistence API (JPA), and many more. There are numerous certification courses available online from different vendors for a price. Some examples include the Oracle Certification Program