Table of Contents

• Title and Copyright Information
• Preface
  • Audience
  • Documentation Accessibility
  • Diversity and Inclusion
  • Related Documents
  • Conventions
• 1 Java Language Changes Summary
• 2 Java Language Changes by Release
  • Java Language Features for Java SE 24
  • Java Language Changes for Java SE 23
  • Java Language Changes for Java SE 22
  • Java Language Changes for Java SE 21
  • Java Language Changes for Java SE 20
  • Java Language Changes for Java SE 19
  • Java Language Changes for Java SE 18
  • Java Language Changes for Java SE 17
  • Java Language Changes for Java SE 16
  • Java Language Changes for Java SE 15
  • Java Language Changes for Java SE 14
  • Java Language Changes for Java SE 13
  • Java Language Changes for Java SE 12
  • Java Language Changes for Java SE 11
  • Java Language Changes for Java SE 10
  • Java Language Changes for Java SE 9
    • More Concise try-with-resources Statements
    • @SafeVarargs Annotation Allowed on Private Instance Methods
    • Diamond Syntax and Anonymous Inner Classes
    • Underscore Character Not Legal Name
    • Support for Private Interface Methods
• 3 Preview Features
• 4 Module Import Declarations
• 5 Flexible Constructor Bodies
  • Early Construction Context
• 6 Simple Source Files and Instance main Methods
  • Creating Simple Source Files
  • Automatic Import of the Static Methods of java.io.IO and the Module java.base
  • Running Simple Source Files with the java Launcher and Instance Main Methods
  • Growing a Program
• 7 Sealed Classes
• 8 Pattern Matching
  • Pattern Matching with instanceof
    • Scope of Pattern Variables and instanceof
  • Pattern Matching with switch
    • When Clauses
    • Pattern Label Dominance
    • Scope of Pattern Variables and switch
    • Null case Labels
  • Type Patterns
    • Type Patterns with Reference Types
    • Type Patterns with Primitive Types
    • Type Patterns with Parameterized Types
  • Record Patterns
    • Generic Record Patterns
    • Using var in Record Patterns
    • Primitive Types in Record Patterns
    • Nested Record Patterns
• 9 Record Classes
  • The Canonical Constructor of a Record Class
  • Alternative Record Constructors
  • Explicit Declaration of Record Class Members
  • Features of Record Classes
  • Record Classes and Sealed Classes and Interfaces
  • Local Record Classes
  • Static Members of Inner Classes
  • Differences Between the Serialization of Records and Ordinary Objects
    • Record Serialization Principles
    • How Record Serialization Works
  • APIs Related to Record Classes
• 10 Unnamed Variables and Patterns
• 11 Switch Expressions and Statements
  • Arrow Cases
  • Colon Cases and the the yield Statement
  • Qualified enum Constants as case Constants
  • Primitive Values in switch Expressions and Statements
  • Exhaustiveness of switch
  • Completion and switch Expressions
• 12 Text Blocks
• 13 Local Variable Type Inference
• 14 Safe Casting with instanceof and switch
  • Conversion Safety and switch