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Learn Java 17 Programming

Learn Java 17 Programming - Second Edition

By : Nick Samoylov
3.3 (12)
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Learn Java 17 Programming

Learn Java 17 Programming

3.3 (12)
By: Nick Samoylov

Overview of this book

Java is one of the most preferred languages among developers. It is used in everything right from smartphones and game consoles to even supercomputers, and its new features simply add to the richness of the language. This book on Java programming begins by helping you learn how to install the Java Development Kit. You’ll then focus on understanding object-oriented programming (OOP), with exclusive insights into concepts such as abstraction, encapsulation, inheritance, and polymorphism, which will help you when programming for real-world apps. Next, you’ll cover fundamental programming structures of Java such as data structures and algorithms that will serve as the building blocks for your apps with the help of sample programs and practice examples. You’ll also delve into core programming topics that will assist you with error handling, debugging, and testing your apps. As you progress, you’ll move on to advanced topics such as Java libraries, database management, and network programming and also build a sample project to help you understand the applications of these concepts. By the end of this Java book, you’ll not only have become well-versed with Java 17 but also gained a perspective into the future of this language and have the skills to code efficiently with best practices.
Table of Contents (23 chapters)
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1
Part 1: Overview of Java Programming
5
Part 2: Building Blocks of Java
15
Part 3: Advanced Java

JVM’s structure

The structure of the JVM can be described in terms of its runtime data structure in memory and the two subsystems that use the runtime data – the classloader and the execution engine.

Runtime data areas

Each of the runtime data areas of JVM memory belongs to one of two categories:

  • Shared areas, which include the following:
    • Method area: Class metadata, static fields, and method bytecode
    • Heap area: Objects (states)
  • Unshared areas that are dedicated to a particular application thread, which include the following:
    • Java stack: Current and caller frames, with each frame keeping the state of Java (non-native) method invocation:
      1. Values of local variables
      2. Method parameter values
      3. Values of operands for intermediate calculations (operand stack)
      4. Method return value (if any)
  • PC register: The next instruction to execute
  • Native method stack: The state of the native method invocations

We have already discussed that a programmer must be careful...

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Learn Java 17 Programming
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