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Asked: 2026-06-16T04:38:56+00:00

I want to do an AND operation between a and b (both decimal). the

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I want to do an “AND” operation between a and b (both decimal). the value of b is determined inside the code. As a result, if I write sth like:

String g= Integer.toHexString(b);
int k=a & g;

I get error, because it should be sth like:

int k=a & 0xFF;

somehow 0x should be before the hex value, and at the same time it can’t be of type String. I did not find any example in Internet for the cases that the second operand can be a variable. Should I write manually a for loop to apply the AND operation bit by bit, or there is a straight forward solution for it?
I appreciate your help.

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1 Answer

  1. Editorial Team

    If b is already an integer, your code should just be:

    int k = a & b;

    A number is a number is a number. The human representations of 0xFF vs 255 makes no difference at all to the & operator. There is no such thing as a “Hex Integer” vs a “Decimal Integer” to the computer, it’s just a value. The different ways of writing it are on the human end.

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