在Java语言中,">>>"运算符为有符号右移操作,就是符号位也会一起做右移
int h = -100; int h2 = h >>> 16 h2结果为65535
在Java语言中,">>"运算符为无符号右移操作,符号位保持不变
int h = -1; int h2 = h >> 10; h2结果还是 -1