Oct
08
2009
A handy list for Java data types and sizes
Integer Data Types
| Data Type |
Size |
Digits |
Min |
Max |
| byte |
8-bit signed |
3 |
-128 |
127 |
| short |
16-bit signed |
5 |
-32,768 |
32,767 |
| int |
32-bit signed |
10 |
-2,147,483,648 |
2,147,483,647 |
| long |
64-bit signed |
19 |
-9,223,372,036,854,775,808 |
9,223,372,036,854,775,807 |
Floating Point Data Types
| Data Type |
Size |
| float |
single-precision 32-bit IEEE 754 floating point |
| double |
double-precision 64-bit IEEE 754 floating point |
Boolean Data Types
| Data Type |
Values |
| boolean |
true or false |
Character Data Types
| Data Type |
Min |
Max |
| char |
\u0000 or 0 |
\uffff or 65,535 |
Default Values
| Data Type |
Default Value |
| byte |
0 |
| short |
0 |
| int |
0 |
| long |
0L |
| float |
0.0f |
| double |
0.0d |
| char |
‘\u0000′ |
| boolean |
false |
| Any Object(s) |
null |
References:
http://java.sun.com/docs/books/tutorial/java/nutsandbolts/datatypes.html
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