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Tuesday, 16 April 2013

Range of Primitive Data types(Byte,short,int,long, float,double, boolean, char) in java




               PRIMITIVE DATA TYPES IN JAVA

byte:
1 signed byte (two's complement). Covers values from -128 to 127.

short:
2 bytes, signed (two's complement), -32,768 to 32,767

int:
4 bytes, signed (two's complement). -2,147,483,648 to 2,147,483,647. Like all numeric types ints may be cast into other numeric types (byte, short, long, float, double). When lossy casts are done (e.g. int to byte) the conversion is done modulo the length of the smaller type.

long:
8 bytes signed (two's complement). Ranges from -9,223,372,036,854,775,808 to +9,223,372,036,854,775,807.

float:
4 bytes. Covers a range from 1.40129846432481707e-45 to 3.40282346638528860e+38 (positive or negative). Like all numeric types floats may be cast into other numeric types (byteshortlongintdouble). When lossy casts to integer types are done (e.g. float to short) the fractional part is truncated and the conversion is done modulo the length of the smaller type.

double:
            8 byte. Covers a range from 4.94065645841246544e-324d to 
            1.79769313486231570e+308d (positive or negative). 

boolean:
1-bit. May take on the values true and false only. true and false are defined constants of the language and are not the same as True and FalseTRUE and FALSE, zero and nonzero, 1 and 0 or any other numeric value. Booleans may not be cast into any other type of variable nor may any other variable be cast into a boolean.

char:
2 bytes, unsigned, Unicode, 0 to 65,535



Data Type Range
byte -128 to 127
short -32,768 to 32767
int -2,147,483,648 to 2,147,483,647
long -9,223,372,036,854,775,808 to 9,223,372,036,854,775,807
float 1.40129846432481707e-45 to 3.40282346638528860e+38 (positive or negative)
double 4.94065645841246544e-324d to 1.79769313486231570e+308d (positive or negative)
Boolean true and false
char 0 to 65,535

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