转:java中各种数据类型的默认值
The following chart summarizes the default values for the above data types.
Data Type | Default Value (for fields) |
byte | 0 |
short | 0 |
int | 0 |
long | 0L |
float | 0.0f |
double | 0.0d |
char | '\u0000' |
String (or any object) | null |
boolean | false |
转自:http://java.sun.com/docs/books/tutorial/java/nutsandbolts/datatypes.html