Optional

• Represents a value that may or may not be present.
• Useful for handling situations where a value might be null, preventing Null Pointer Exceptions.

Usage

  public void box(Cat schrodingers){
    Optional<String> optionalName = Optional.ofNullable(schrodingers);

    if (optionalName.isPresent()) {
        System.out.println("Cat is alive");
    } else {
        System.out.println("Cat is dead");
    }
  }

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Backlinks

• Java 8 (cs)