Kotlin at a Glance" Is a book that gives an in-depth knowledge about kotlin. This book mainly focused on kotlin programming language and its comparison to Java. By reading this book, The readers can make themselves familiar with the language most important features and aspects. With a complete overview of OOPS, null safety, generics, and many other interesting features, this book is a perfect Choice for fresher and experienced Java developers who want to learn more about this alternative JVM language. For reading this book, there’s no need for any prior kotlin knowledge, as the basics are explained in the book. Moreover, the required functional programming concepts are also described. The readers of this book will also learn to develop an app in Android using kotlin. Moreover, this book is for everyone who is on their way of becoming a developer. Table of Contents OOP in brief an introduction to Java an introduction to kotlin kotlin architecture kotlin token kotlin input kotlin operator string operations conditional statements jumping statement br>looping/ control flow/ iteration kotlin array null safety kotlin function function scope kotlin Lambda functions and exception handling kotlin OOPS constructor inheritance abstract keyword polymorphism collection coroutines generics regex interoperability with Java kotlin for Android extras interoperability with JavaScript glossary important question.