ª¹Ô´¢éÍÁÙÅã¹ÀÒÉÒ Java
¢éÍÁÙŪ¹Ô´ Primitive Data Types
ª¹Ô´¢éÍÁÙÅ |
ÊÓËÃѺ |
¤èÒ·Õèà»ç¹ä»ä´é |
byte |
µÑÇàÅ¢¨Ó¹Ç¹àµçÁàÅç¡æ ãªé¾×é¹·Õèà¡çºà¾Õ§á¤è 1 亵ì |
-128 ¶Ö§ 127 |
short |
µÑÇàÅ¢¨Ó¹Ç¹àµçÁ (ãªé¾×é¹·Õèà¡çº 16 ºÔµ ËÃ×Í 2 亵ì) |
-32,768 ¶Ö§ 32,767 |
int |
µÑÇàÅ¢¨Ó¹Ç¹àµçÁ·ÑèÇä» (ãªé¾×é¹·Õèà¡çº 32 ºÔµ ËÃ×Í 4 亵ì) |
-2,147,483 ¶Ö§ 2,147,483,647 |
long |
µÑÇàÅ¢¨Ó¹Ç¹àµçÁ¢¹Ò´ãËè (ãªé¾×é¹·Õèà¡çº 64 ºÔµ ËÃ×Í 8 亵ì) |
-9,223,372,036,845,775,808 ¶Ö§ |
float |
µÑÇàÅ¢·È¹ÔÂÁ·ÑèÇä» (ãªé¾×é¹·Õèà¡çº 32 ºÔµ ËÃ×Í 4 亵ì) |
1.4e-45 ¶Ö§ 3.4028235e+38 |
double |
µÑÇàÅ¢·È¹ÔÂÁ¢¹Ò´ãËè (ãªé¾×é¹·Õèà¡çº 64 ºÔµ ËÃ×Í 8 亵ì) |
4.9e-324 ¶Ö§1.7976931348623157e+308 |
char |
µÑÇÍÑ¡É÷ءª¹Ô´ µÒÁÁҵðҹ 16-bit Unicode |
µÑÇÍÑ¡ÉõèÒ§æ |
boolean |
¤èÒ¤ÇÒÁà»ç¹¨ÃÔ§·Ò§µÃáР(ãªé¾×é¹·Õèà¡çº 1 ºÔµ) |
ÁÕ 2 ¤èÒà·èÒ¹Ñ鹤×Í true ¡Ñº false |
¨Ñ´¡ÒâéÍÁÙÅ´éǵÑÇ´Óà¹Ô¹¡ÒÃ
µÑÇ´Óà¹Ô¹¡Òà (Operator) ·Ó˹éÒ·Õè¨Ñ´¡Òà áÅÐàÃÒàÃÕ¡µÑÇá»Ã·Õè·Ó§Ò¹ÃèÇÁ¡ÑºµÑÇ´Óà¹Ô¹¡ÒÃÇèÒ Operand