Update README.md

Author: madhuribisht

README.md

@@ -3,7 +3,19 @@ Core Java Interview Question
 
 
 #### Q1 What is JAVA? 
-  Java is a high-level programming language and is platform-independent.
-  Java is a collection of objects. It was developed by Sun Microsystems. There are a lot of applications, websites, and games that are developed using Java.
+     Java is a high-level programming language and is platform-independent.
+     Java is a collection of objects. It was developed by Sun Microsystems. There are a lot of applications, websites, and games that are developed using Java.
 
+#### Q2  What are the features of JAVA? 
+  #### Features of Java are as follows:
 
+#### OOP concepts
+   * Object-oriented
+   * Inheritance
+   * Encapsulation
+   * Polymorphism
+   * Abstraction
+* ** Platform independent:** A single program works on different platforms without any modification.
+* ** High Performance:** JIT (Just In Time compiler) enables high performance in Java. JIT converts the bytecode into machine language and then JVM starts the execution.
+* ** Multi-threaded:** A flow of execution is known as a Thread. JVM creates a thread which is called the main thread. The user can create multiple threads by extending the thread class 
+                      or by implementing the Runnable interface.