前提概念
1 Byte = 8bit
取一位
public static byte aByte= 0b00101111;
aByte &0x01
public static byte aByte= 0b1111111;
public static void main(String[] args) {
log((aByte>>4) &(0xff));
log((aByte&0xff));
log((aByte>>2 & (0xff>>1)));
}