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1¡¢byte

1×Ö½Ú，-2^7~2^7-1

2¡¢short

2×Ö½Ú，-2^15~2^15-1

3¡¢int

4×Ö½Ú，-2^31~2^31-1

4¡¢long

8×Ö½Ú，-2^63~2^63-1

5¡¢float

4×Ö½Ú，3.402823e+38~1.401298e-45（e+38，Ϊ10µÄ38´Î·½）

6¡¢double

8×Ö½Ú，1.797693e+308~4.9000000e-234

7¡¢char

2×Ö½Ú，0~2^16-1

8¡¢boolean

È¡ÖµÊÇtrue»òfalse