Type Casting

 Type Casting

Type Casting:

                Converting one data type into another data type is knowns as Type casting.
All the 8 primitives datatype except boolean we can convert from one datatype to another datatype.

Types of Type casting:
  1. Inplicit type casting
  2. Explicit type casting
1. Implicit type casting:
  • It is a process of Converting smaller datatype to larger datatype is known as Implicit type casting. It is also known as Widening.
  • Implicit type casting is done by compiler automatically.
  • There is no loss of information in implicit type casting.

2. Explicit type casting:

  •  It is a process of converting larger datatype to smaller datatype is known as Explicit type casting. It is also known as narrowing.
  • Explicit type casting will not be performed by the compiler, it is the responsibility of the programmer.
  • There may be chance of loss of information.

Byte-> short, int, long, float, double.
short-> int, long, float, double.
char-> int, long, flost, double.
int-> long, float, double.
long-> float, double.
float-> double.


Comments

Post a Comment

Popular posts from this blog

OOP's Concepts

Image
 OOP's Concepts: Class Object Encapsulation Inheritance Polymorphism Abstraction 1. Class:                  Class is a collection of objects.  Class is a blueprint which defines some properties and behaviors.  It is logical entity. 2. Object:                 Any real world entity which has behavior and state known as Object. It is logical or physical entity. For Ex. chair, book, computer, bottle etc. 3. Encapsulation:               It is a process of wrapping up of data or binding up of data into a single unit, known as encapsulation. For Ex. Capsule(wrapped with different medicines).               It is a process of making fields as private and providing access to those fields with the help of public methods that is through setters and getters methods. 4. Inheritance:       ...
Read more

Basics about Core Java

Image
  Core Java -   Three basic elements in Java: 1) Class:   A  class  is a group of objects which have common properties. It is a template or blueprint from which objects are created. It is a logical entity. It can't be physical. A class in Java can contain: Fields Methods Constructors Blocks Nested class and interface 2) Interface:   An   interface in Java   is a blueprint of a class. It has static constants and abstract methods. The interface in Java is  a mechanism to achieve  abstraction . There can be only abstract methods in the Java interface, not method body. It is used to achieve abstraction and multiple inheritance. In other words, you can say that interfaces can have abstract methods and variables. It cannot have a method body. 3). Enum:   An enum type is  a special data type that enables for a variable to be a set of predefined constants . The variable must be equal to one of the values that have been predefined ...
Read more

Data types and Variables

Image
  Datatype:     Specifies the size and then type of values that can be stored in an identifier.     They are used to represent how much memory is required to hold the data. Variables:      Variables are nothing but a name given to storage area. Three types of variables:      1. Local Variable      2. Instance variable      3. Static variable 1. Local Variable:   A  local variable  in Java is a variable that’s declared within the body of a method. Then you can use the variable only within that method. Other methods in the class aren’t even aware that the variable exists. If we are declaring a local variable then we should initialize it within the block before using it . 2. Instance variable: The variables which are declared inside a class outside any method /block/ a constructor are known as instance variables.       *  For Instance variables JVM will automatically ass...
Read more