This book covers 175 programs.The programs included in this book are especially java8 concepts.This book covers the topics like default and static methods in interfaces, invoking private &protected constructor, invoking constructor in abstract class,co-variant return type, Static and final method overloading,lambda techniques, inner interface of a class,private inner interface inside class, functional interface with default and static methods,non functional interface extends functional interface, Static synchronized methods, initialize blocks and constructors in inheritance, static and non-static initialize Blocks, private class extending another class, private inner class and private methods, invoking the private constructor with static nested class, protected class, private constructor in private inner class, extending inner private class through non private inner class, overriding private class methods , extending inner protected class by a protected class , constructor chaining in private class along with private constructors ,Exception propagation for unchecked exception, re-throwing same and different type of exceptions, re-throwing user defined exception, final inner class.