This book was created for those of you who want to learn object-oriented programming language with the Java programming language. The many tutorials on the internet and various media sometimes make us confused and don't know where to learn from. In this book it is explained in as simple language as possible. Apart from that, the material in this book has been tested on the road in object-oriented programming courses. This book was created to guide the object-oriented programming language Java. The material in this book is quite complex but simple. Starting from Introduction to the programming language, Starting to Learn Java, Basics of the Java Programming Language, Data Types and Variables, Decision Making in the Java Programming Language, Array Functions, Use of Classes, Use of Constructors, Method Techniques, Inheritance Techniques, Instance Operators, Super Keywords in Java, Aggression Functions and Examples "Java Programming Language". Before studying there are several conditions that you must have, these conditions are having a strong desire to never give up, seeing the applications out there makes you even more enthusiastic about developing your potential and seeing other sides that might produce the program you want.