Primitive Data Types in Java
Java defines the following eight primitive data types:- boolean for logical data it takes values of only true or false.
- char 16-bit Unicode(UTF-16 unsigned characters).
- byte 8-bit signed integers.
- short 16-bit signed integers.
- int 32-bit signed integers.
- long 64-bit signed integers.
- float 32-bit IEEE 754 floating point.
- double 64-bit IEEE 754 floating point.
/*
This program demonstrates basic variables in Java
*/
class BasicVariables
{
public static void main(String[] args)
{
//The java language defines the following primitive datatypes.
boolean bLogic;
char cCharacter;
byte byWord;
short iSmallInteger;
int iAnInteger;
long iLargeInteger;
float fNumber;
double dLargeNumber;
bLogic=true;
cCharacter='\u03C0';
byWord=127;
iSmallInteger=255;
iAnInteger=33;
iLargeInteger=30000000;
fNumber=3.99999f;
dLargeNumber=3.9999e10;
System.out.println(bLogic);
System.out.println(cCharacter);
System.out.println(byWord);
System.out.println(iSmallInteger);
System.out.println(iAnInteger);
System.out.println(fNumber);
System.out.println(dLargeNumber);
}
}To compile and run from the command line:
$ $javac BasicVariables.java $java BasicVariables true π 127 255 33 3.99999 3.9999E10 $ $
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