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 primary purpose of the MapperInvocationHandler class in the context of dynamic proxies?
    1. Handling database connections
    2. Routing method calls for dynamic mappings
    3. Implementing complex business logic
    4. Parsing XML configurations
  2. Which feature makes dynamic proxies adaptable in scenarios where object structures are not known until runtime?
    1. Method overloading
    2. Interface-based implementation
    3. Dynamic method routing
    4. Static method invocation
  3. How does the MapperInvocationHandler class demonstrate customizability in the dynamic mapping process?
    1. It uses hardcoded values for method calls.
    2. It leverages external libraries for mapping.
    3. It inspects annotation parameters and adapts the mapping logic.
    4. It enforces strict immutability in mapped entities.
  4. What is the primary purpose of reflection in Java?
    1. Compile-time code optimization
    2. Dynamic exploration and manipulation of object structures
    3. Secure encryption...