How can I teach myself Java?

Now that we’ve broken down the roadmap and offered the tools for starting Java from scratch, let’s get to the gist of the problem — how long does it take to learn Java? On average, becoming a confident Java programmer takes about 1–2 years , considering you spend 2–3 hours per day practicing coding.

Learning the Java Language – Lessons describing essential concepts such as classes, objects, inheritance, datatypes, generics , and packages. Essential Java Classes – Lessons on exceptions, basic input/output, concurrency, regular expressions, and the platform environment.