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Introduction to Java 8

Java 8 introduced several powerful features that make coding easier, cleaner, and more efficient. These features are widely used in modern Java development.

Key Features of Java 8​

  1. Lambda Expressions: Write shorter, more readable code.
  2. Functional Interfaces: Simplify method implementations.
  3. Streams API: Process collections of data easily (covered later).
  4. Default and Static Methods in Interfaces: Add methods to interfaces without breaking existing code.
  5. Optional Class: Avoid NullPointerException issues.
  6. New Date and Time API: Replace outdated Date and Calendar classes.

Why Use Java 8?​

  • Simplify your code with functional programming.
  • Handle null values safely with Optional.
  • Process large datasets efficiently with Streams (explained later).