I'm currently learning Java and want to move into full-stack development. I'd place myself somewhere between beginner and intermediate: most of my experience comes from solving LeetCode and DSA problems, so I'm comfortable with basic Java but haven't done much application development yet.
I have six months to focus seriously on this goal and would like a practical plan for becoming internship- or job-ready. I'm looking for recommendations for a structured Java full-stack course, the best order for learning the technologies, useful free or paid resources, and projects to build along the way. I'd also like advice on whether I should continue practicing DSA and LeetCode, or shift most of my time toward development. My main goal is to build and deploy real applications rather than simply finish a collection of courses.
3 Answers
The Helsinki Java course is a solid way to strengthen your fundamentals, but it won’t cover the entire full-stack path. Since you already have DSA experience, you probably don’t need to spend months repeating beginner Java material. Move fairly quickly into Spring Boot, REST APIs, SQL, and a frontend framework such as React or Angular. Six months can be enough if you build two or three substantial projects instead of only following tutorials. Keep LeetCode as a small habit—perhaps two or three problems per week—because projects are usually more important for demonstrating development ability.
A practical sequence would be:
• Month 1: Refresh Java, learn SQL, and become comfortable with Git and GitHub.
• Month 2: Learn Spring Boot, REST APIs, JPA/Hibernate, and PostgreSQL.
• Month 3: Add Spring Security, JWT authentication, automated testing, and API documentation with Swagger or OpenAPI.
• Month 4: Learn the essentials of HTML, CSS, JavaScript, and React.
• Month 5: Build one serious full-stack project, such as a job portal, e-commerce application, or booking platform.
• Month 6: Learn Docker, basic cloud deployment, AWS fundamentals, and begin interview preparation.
Resources such as roadmap.sh, Telusko, Amigoscode, and in28minutes can help, but choose one structured course at a time rather than jumping between several. Prioritize Java, Spring Boot, PostgreSQL, React, Git, and Docker. Keep DSA practice in your schedule, but let project work take most of your time. A few strong projects are much more valuable than ten small tutorial copies, especially if you can explain the design decisions and deploy the applications yourself.
Think of the six months as one continuous progression. Start with a Java refresh and testing, then learn HTTP and SQL, followed by Spring Boot, a frontend framework, authentication, and deployment. Rather than building many unrelated tutorial apps, create one project that grows over time—for example, a task manager or booking system. Add a database, REST API, authentication, tests, documentation, and a simple user interface in stages. That gives you something you can actually explain in interviews.
That approach makes sense. Are there any free video resources that cover most of this progression?