a2zinterviews

33.	How to create an immutable class?
	To create an immutable class following steps should be followed. Create a final class. Set the values of properties using constructor only. Make the properties of the class final and private. Do not provide any setters for these properties.
	Discuss Your Name Your Email-ID Your Answer

34.	What is the difference between implicit and explicit type casting?
	An explicit conversion is where you use syntax to tell the program to do a conversion whereas in case of implicit type casting you need not provide the data type.
	Discuss Your Name Your Email-ID Your Answer

35.	What is downcasting?
	Downcasting means creating from a general to a more specific type.
	Discuss Your Name Your Email-ID Your Answer

36.	What are the different types of casting?
	There are two types of casting Casting between primitive numeric types Casting between object references Casting between numeric types is used to convert larger values into smaller values. For e.g. double values to byte values. Casting between object references helps you refer to an object by a compatible class, interface, or array type reference.
	Discuss Your Name Your Email-ID Your Answer