Book Image

Mastering the Java Virtual Machine

By : Otavio Santana
Book Image

Mastering the Java Virtual Machine

By: Otavio Santana

Overview of this book

Mastering the Java Virtual Machine is a comprehensive guide that will take you into the heart of Java programming, guiding you through the intricate workings of the Java Virtual Machine (JVM) and equipping you with essential skills to become a proficient Java developer. You’ll start by understanding the JVM, exploring its architecture and how it executes Java code. Through detailed explanations and real-world examples, you’ll gain a deep understanding of JVM internals, enabling you to write efficient and optimized Java applications. As you progress, you’ll delve into memory management and execution, unraveling the complexities of heap and stack management, garbage collection, and memory profiling. You'll learn how memory is allocated and reclaimed in the JVM, as well as how to optimize memory usage and identify performance bottlenecks in your applications. With this knowledge, you’ll be able to create Java programs that are not only robust but also highly performant. By the end of this book, you’ll have the skills needed to excel in Java programming, writing efficient, maintainable code.
Table of Contents (19 chapters)
Free Chapter
1
Part 1: Understanding the JVM
5
Part 2: Memory Management and Execution
9
Part 3: Alternative JVMs
12
Part 4: Advanced Java Topics

Questions

Answer the following questions to test your knowledge of this chapter:

  1. What is the purpose of the bytecode interpreter in the JVM?
    1. Static code analysis
    2. Dynamic code execution
    3. Memory allocation
    4. Platform-specific compilation
  2. What does the term “hotspot” refer to in the context of baseline JIT compilation?
    1. Code segments rarely executed
    2. Frequently executed code sections
    3. Compilation errors
    4. Interpreted bytecode
  3. How does the bytecode interpreter contribute to platform independence in Java?
    1. It performs static analysis
    2. It interprets bytecode on the fly
    3. It relies on platform-specific compilation
    4. It only works on certain operating systems
  4. What is the primary role of the baseline JIT compiler in JVM optimization?
    1. Quick compilation for all code segments
    2. In-depth analysis of code behavior
    3. Static translation of bytecode
    4. Selective compilation of frequently executed code
  5. How does dynamic adaptation contribute to baseline JIT compilation’s effectiveness?
    1. By ignoring...