The Managed Runtime Environment: Diving into the JVM with Kotlin
The Managed Runtime Environment: Diving into the JVM with Kotlin
About the Book
A considerable amount of contemporary software is targeted to run in some instance of a software-mediated execution environment, usually called a managed runtime environment or a virtual execution environment. The Java Virtual Machine (JVM), originally designed to run software written in Java, is one of such environments and is currently a target for other relevant programming languages, such as Kotlin, Scala, Groovy or Clojure.
This book explores the capabilities and techniques of managed runtime environments, with a focus on the Java Virtual Machine (JVM).
We use both Java and Kotlin as programming languages, exploring their interoperability within the JVM ecosystem.
Geared towards developers proficient in both Java and Kotlin, this book assumes familiarity with Kotlin features such as generics, scope functions, lambdas with receivers, null safety, and more.
About the Author
Table of Contents
- Preface
- Introduction to the JVM
- Managed Runtime Environment
- Java Ecosystem
- JVM
- Class Loader, CLASSPATH and Interoperability
- Central Repository and Dependency Management
- Type Basics
- Type Fundamentals
- Primitive Types
- Reference Types
- Members
- Boxing and Unboxing
- Nested Types
- Abstract and Base Types
- Anonymous classes
- Kotlin to Java type system
- Kotlin Class Members
- Object declarations
- Function types
- Type Fundamentals
- Reflection
- Kotlin Reflection
- Java Reflection
- NaiveMapper: automatic object to object mapper
- NaiveMapper Motivation
- NaiveMapper Implementation
- Annotations
- Reflection of generic types
- Performance testing and Microbenchmarking
- Performance Measurement Pitfalls
- JMH
- Bytecode (work in progress)
- Evaluation Stack
- Metaprogramming
- Introduction
- Cojen Maker
- Dynamic Mapper
- Sequences, Generators and Suspending functions
- Sequence Alternatives
- Operation names
- Composability: method chaining versus nested functions
- Eager versus lazy evaluation
- Extensibility
- Access approach: pull versus push
- Generators and yield pattern
- Suspend functions
- Deconstructing yield and generators
- Translating a Suspend Function into a State Machine
- sequence builder
- Exercises
- Sequence Alternatives
- Garbage Collection and Cleanup Actions
- The Managed Heap
- Garbage Collection
- Types Requiring Special Cleanup
- Using closeable types
- Finalization and Cleaners
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