OCA: Oracle Certified Associate Java SE 8 Programmer I Study Guide

Why I’m reading it

The goal is to be able to write backend in Java/Spring, not only frontend. A certificate by itself doesn’t get you a job. But preparing for it forces you to learn the core of the language down to the details, not “at Stack Overflow level”.

Chapter notes

A breakdown of each of the six chapters — where TypeScript habits lead to a wrong answer and which LeetCode problems reinforce the chapter — is in the post Java OCA 8 through a frontend developer’s eyes.