整型数的取值范围

The values of the integral types are integers in the following ranges:

 

• For byte, from -128 to 127, inclusive
• For short, from -32768 to 32767, inclusive
• For int, from -2147483648 to 2147483647, inclusive
• For long, from -9223372036854775808 to 9223372036854775807, inclusive
• For char, from '/u0000' to '/uffff' inclusive, that is, from 0 to 65535