Tuesday, 22 November 2016

Java Type Casting

Type Casting is nothing but to assign a value of one type to a variable of another type. If the two types are compatible, then Java will perform the conversion automatically. Java performs automatic type conversion if one of the following conditions are met:
  1. The two types are compatible.
  2. The destination type is larger than the source type.
To create a conversion between two incompatible types, you must use an explicit type conversion. It has this general form:
(target-type) value
The following program demonstrate how to use type casting in Java.


PROGRAM
class TypeCasting {

 public static void main(String[] args) {
  
  byte b;
  int val = 263;
  double d = 9563.25;
  long l = 56322145;
  System.out.println("int val = "+val);
  System.out.println("double d = "+d);
  System.out.println("long l = "+l);
  System.out.println("\nint to byte ");
  b = (byte) val;
  System.out.println(val+" to "+b);
  System.out.println("\ndouble to int ");
  System.out.println(d+" to "+(int)d);
  System.out.println("\nlong to double ");
  System.out.println(l+" to "+(double)l);
  System.out.println("\nlong to short ");
  System.out.println(l+" to "+(short)l);
  System.out.println("\ndouble to byte ");
  System.out.println(d+" to "+(byte)d);
 }
}
The output is given below:

OUTPUT
C:\>javac TypeCasting.java
C:\>java TypeCasting
int val = 263
double d = 9563.25
long l = 56322145

int to byte 
263 to 7

double to int 
9563.25 to 9563

long to double 
56322145 to 5.6322145E7

long to short 
56322145 to 26721

double to byte 
9563.25 to 91

No comments:

Post a Comment