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C# Learning: variable's types vs Java


int can store any whole number from –2,147,483,648 to 2,147,483,647.
string can hold text of any length (including the empty string “”).
bool is a Boolean value—it’s either true or false.
double can store real numbers from ±5.0 × 10−324 to ±1.7 × 10308 with up to
16 significant figures. That range looks weird and complicated, but it’s actually
pretty simple. The “significant figures” part means the precision of the number:
35,048,410,000,000, 1,743,059, 14.43857, and 0.00004374155 all have seven
significant figures.


byte can store any whole number between 0 and 255.
sbyte can store any whole number from –128 to 127
short can store any whole number from –32,768 to 32,767.
ushort can store any whole number from 0 to 65,535.
uint can store any whole number from 0 to 4,294,967,295.
long can store any whole number between minus and plus 9 billion billion.
ulong can store any whole number between 0 and about 18 billion billion.

Java's counterpart,

Primitive TypeSizeMinimum ValueMaximum ValueWrapper Type
char  16-bit    Unicode 0  Unicode 216-1  Character
byte  8-bit    -128  +127  Byte
short  16-bit    -215
(-32,768)		  +215-1
(32,767)		  Short
int  32-bit    -231
(-2,147,483,648)		  +231-1
(2,147,483,647)		  Integer
long  64-bit    -263
(-9,223,372,036,854,775,808)		  +263-1
(9,223,372,036,854,775,807)		  Long
float  32-bit    32-bit IEEE 754 floating-point numbers  Float
double  64-bit    64-bit IEEE 754 floating-point numbers  Double
boolean  1-bit    true or false  Boolean
void  -----    -----    -----    Void

So, C# is actually owning more types than Java. Except float, which I haven't found it yet.


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