As a Java developer, there are several skills and technologies that you should master to become a well-rounded and successful professional. Here is a roadmap that outlines the key areas you should focus on:
Step 1: Make a Strong Foundation, Core Java (Java SE)- Begin with mastering the basics of Java language, including Object-oriented programming concepts, syntax, data types, operators, control statements, multithreading and exception handling. You should also learn about Java collections, streams, and concurrency.
Step 3: Database Integration- Learn how to integrate databases with Java applications using technologies such as JDBC and ORM. Familiarize yourself with SQL and learn about database management systems such as Oracle, MySQL, and PostgreSQL.
Step 4: Data Structures and Algorithms (DSA)- Keep yourself updated with the latest algorithms and data structures and practice solving different types of problems. Focus on developing your problem-solving skills and your ability to analyze and optimize algorithms.
Step 5: Java Frameworks- Learn popular Java frameworks such as Spring and Hibernate. These frameworks can help you to develop robust, scalable, and efficient applications.
Step 6: Competitive Programming- It involves solving algorithmic problems using programming languages like Java, C++, or Python. Learn from experienced competitive programmers by reading their code, understanding their thought process, and solving problems with them.
Some popular competitive programming websites that you can use to practice and improve your coding skills are Leet Code, Hacker Rank, Code Chef, etc.
Remember that it is essential to keep up with the latest technologies and trends, stay curious, and never stop learning.