What are Java 8 & Java 9 Features

Java 5 Features:

    > For-each loop

    > Autoboxing and Unboxing

    > Covariant Return Type

    > Annotation

    > Generics

    > Enum

    > Static Import

    > Varargs

Java 6 Features:

    > Instrumentation (premain method)

Java 7 Features:

    > String in switch statement

    > Binary Literals
    > The try-with-resources
    > Caching Multiple Exceptions by single catch
    > Underscores in Numeric Literals

Java 8 Features:

    > Lambda Expressions
    > Pipelines and Streams
    > Date and Time API
    > Default Methods
    > Type Annotations
    > Nashhorn JavaScript Engine
    > Concurrent Accumulators
    > Parallel operations
    > PermGen Error Removed
    > TLS SNI

Java 9 Features:

 > A light-weight JSON API - which is a source of great speculation right now about how truly useful this feature will be (as proposed by the community process).

 > A HTTP 2 Client  - for HTTP 2.0 and websockets.

 > Process API Improvements  - to improve the API for controlling and     managing OS processes.

 > Improved contended locking -for increasing performance between threads.

 > Segmented Code Cache - to improved execution time for complicated            benchmarks.

 > Smart Java Compilation (Part 2) - Makes the sjavac tool available in the         default JDK.

 > Modular Source Code - organizes JDK source code into modules.