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The javac command generates this special format called bytecode that the java command can run. Then java launches the Java Virtual Machine (JVM) before running the code. The JVM knows how to run ...

A hands-on Maven project designed for engineers preparing for the OCP Java 21 Certification. This repository uses a realistic travel recommendation engine to master Java generics and sealed types.

A Complete Study System for OCA/OCP Exams 1Z0-803 and 1Z0-804. Prepare for the OCA/OCP Java SE 7 Programmer I and II exams with this exclusive Oracle Press guide. Chapters feature challenging ...