<ol>
<li>Linux</li>
<li>Git</li>
<li>IDE
<ul>
<li>IntelliJ</li>
<li>Eclipse</li>
<li>VSCode</li>
</ul>
</li>
<li>Core
<ul>
<li>Classes/Objects - OOP</li>
<li>Arrays</li>
<li>Classes</li>
<li>Packages</li>
<li>Polymorphism</li>
<li>Variables</li>
<li>Strings</li>
<li>Loops</li>
<li>Inheritances</li>
<li>Interfaces</li>
<li>Files</li>
<li>I/O Streams</li>
</ul>
</li>
<li>Collections
<ul>
<li>Arrays</li>
<li>Lists</li>
<li>Maps</li>
<li>Stacks</li>
<li>Queues</li>
<li>Optionals</li>
</ul>
</li>
<li>Advanced
<ul>
<li>Dependency Injection</li>
<li>Design Patterns</li>
<li>How JVM Works</li>
<li>Multi-Threading</li>
<li>Generics</li>
</ul>
</li>
<li>Exception Handling
<ul>
<li>Checked Exceptions</li>
<li>Unchecked Exceptions</li>
</ul>
</li>
<li>Streams &amp; Functional Programming</li>
<li>Testing
<ul>
<li>Unit Testing</li>
<li>Integration Testing</li>
<li>Debugging Skills</li>
<li>Contract Testing</li>
<li>Mocking</li>
<li>Assertion Libraries</li>
</ul>
</li>
<li>Databases
<ul>
<li>Database Design</li>
<li>Queries</li>
<li>Indexes</li>
<li>Joins</li>
<li>Functions</li>
<li>Schema Migration Tool (Flyway, Liquibase)</li>
<li>Relational Database</li>
<li>JDBC</li>
<li>NoSQL</li>
</ul>
</li>
<li>Clean Code
<ul>
<li>SOLID Principles</li>
<li>N-Tier Architecture</li>
<li>Immutability</li>
</ul>
</li>
<li>Logging</li>
<li>Multi-Threading</li>
<li>Build Tools
<ul>
<li>Maven</li>
<li>Gradle</li>
<li>Bazel</li>
</ul>
</li>
<li>HTTP
<ul>
<li>Rest API</li>
<li>GraphSQL</li>
<li>How HTTP Works</li>
<li>API Design</li>
</ul>
</li>
<li>Frameworks
<ul>
<li>Spring Boot</li>
<li>Play</li>
<li>Quarkus</li>
</ul>
</li>
</ol>
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Amigoscode

A comprehensive guide for Java developers covering essential topics such as Linux, Git, IDE options (IntelliJ, Eclipse, VSCode), core Java concepts (OOP, Arrays, Polymorphism, etc.), Collections, advanced topics (Dependency Injection, Design Patterns, Multi-Threading), Exception Handling, Streams & Functional Programming, Testing, Databases, Clean Code principles, Logging, Build Tools (Maven, Gradle, Bazel), HTTP (Rest API, GraphQL), and Java frameworks (Spring Boot, Play, Quarkus).

Java Roadmap

Great post!. Been working with Java for more than 16 years. Still coding.

Nice list of keywords. And still wanna refer you guy to visit <a href="http://roadmap.sh" target="_blank" rel="noopener nofollow">roadmap.sh</a>. More detail

Just to add another step, a good comparison of your work with what I found online… Great job none the less
<a href="https://roadmap.sh/java" target="_blank" rel="noopener nofollow">Java roadmap</a>

I’m sure this post will help me a lot because now I’m thinking about starting to learn Java. 🥳