Comprehensive list of new features introduced in Java 8

 

Here is a comprehensive list of new features introduced in Java 8:

1. Lambda Expressions
   • Example:

   List<Integer> numbers = Arrays.asList(1, 2, 3, 4, 5);
   numbers.forEach(n -> System.out.println(n));

2. Stream API
   • Example:

   List<Integer> numbers = Arrays.asList(1, 2, 3, 4, 5);
   int sum = numbers.stream().reduce(0, (a, b) -> a + b);
   System.out.println("Sum: " + sum);

3. Method References
   • Example:

   List<Integer> numbers = Arrays.asList(1, 2, 3, 4, 5);
   numbers.sort(Comparator.naturalOrder());

4. Default and Static Methods in Interfaces
   • Example:

   interface Shape {
      double area();
      default void printArea(Shape shape) {
         System.out.println("Area: " + shape.area());
      }
   }

5. Date and Time API
   • Example:

   LocalDate today = LocalDate.now();
   System.out.println("Today's date: " + today);

6. Optional Class
   • Example:

   Optional<String> optional = Optional.of("value");
   if (optional.isPresent()) {
      System.out.println("Value: " + optional.get());
   }

7. Base64 Encoding and Decoding
   • Example:

   String text = "Hello, World!";
   String encoded = Base64.getEncoder().encodeToString(text.getBytes());
   System.out.println("Encoded: " + encoded);
   byte[] decoded = Base64.getDecoder().decode(encoded);
   System.out.println("Decoded: " + new String(decoded));

8. Parallel Array Sorting
   • Example:

   int[] numbers = {5, 4, 3, 2, 1};
   Arrays.parallelSort(numbers);
   System.out.println(Arrays.toString(numbers));

9. Functional Interfaces
   • Example:

   Function<Integer, Integer> square = n -> n * n;
   System.out.println("Square: " + square.apply(5));

10. Nashorn JavaScript Engine

• Example:

   ScriptEngine engine = new ScriptEngineManager().getEngineByName("nashorn");
   engine.eval("print('Hello, Nashorn!')");

These are all the new features introduced in Java 8, along with brief examples to demonstrate how they work.