How to get a bit value on particular position starting from msb?

问题

I never worked with bits in Java before, so the question is the following: I have

byte a=254;

How to get a bits from this byte, starting from msb position?

If position == 0 it returns 1
If position == 7 it returns 0 

Thank you in advance

回答1:

int getBitFromMSB(byte x,int position){
    return (x >>> (7 - position)) & 1;
}

来源：https://stackoverflow.com/questions/15630476/how-to-get-a-bit-value-on-particular-position-starting-from-msb