Data Type Range And Values, Wrapper Class

Integer Types

Integer data types are byte, short, int, long

Ex:

byte a = 127 ;

short b = 32767;

int c = 2147483645 ;

long d = 9223372036854775807L;

Data Type	Width(bits)	Minimum value MIN_VALUE	Maximum value MAX_VALUE
`byte`	`8`	`-2`⁷ `(-128)`	`2`⁷`-1 (+127)`
`short`	`16`	`-2`¹⁵ `(-32768)`	`2`¹⁵`-1 (+32767)`
`int`	`32`	`-2`³¹ `(-2147483648)`	`2`³¹`-1 (+2147483647)`
`long`	`64`	`-2`⁶³ `(-9223372036854775808L)`	`2`⁶³`-1 (+9223372036854775807L)`

Characters are represented by the data type char

Data Type	Width (bits)	Minimum Unicode value	Maximum Unicode value
`char`	`16`	`0x0 (\u0000)`	`0xffff (\uffff)`

Ex:

char a = 'D'

char let = 'B'

Floating-point numbers are represented by the float and double data types.

Data Type	Width (bits)	Minimum Positive Value MIN_VALUE	Maximum Positive Value MAX_VALUE
`float`	`32`	`1.401298464324817E-45f`	`3.402823476638528860e+38f`
`double`	`64`	`4.94065645841246544e-324`	`1.79769313486231570e+308`

Ex:

float length = 12.12f ;

double width = 3232.323232 ;

boolean have the two logical values denoted by the literals true and false

Data Type	Width	True Value Literal	False Value Literal
`boolean`	not applicable	`true`	`false`

Ex:

boolean yes = true;

boolean no = false;

Data Type	Width (bits)	Minimum Value, Maximum Value	Wrapper Class
`boolean`	not applicable	`true`, `false` (no ordering implied)	`Boolean`
`byte`	`8`	-2⁷, 2⁷-1	`Byte`
`short`	`16`	-2¹⁵, 2¹⁵-1	`Short`
`char`	`16`	`0x0`, `0xffff`	`Character`
`int`	`32`	-2³¹, 2³¹-1	`Integer`
`long`	`64`	-2⁶³, 2⁶³-1	`Long`
`float`	`32`	±`1.40129846432481707e-45f`, ±`3.402823476638528860e+38f`	`Float`
`double`	`64`	\'b1`4.94065645841246544e-324`, \'b1`1.79769313486231570e+308`	`Double`

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