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javabinaryunsignedsignedrepresentation

Converting Signed Int to Unsigned String value in Java

To keep this short, I am getting a signed number, -25771 (in Java), that I need the unsigned String representation of, which is "4294941525". Java thinks the number is signed two's complement, but I need its unsigned value.

I noticed the Javadoc for the toString() method for Integers only converts to signed representation.

Is there not a bitwise operation such as "& 0xFF" that I can do to get the unsigned number?

Solution

  • I would try

    int val = -25771;
System.out.println(Long.toString(val & 0xFFFFFFFFL));

    prints

    4294941525

    or

    "" + (val & 0xFFFFFFFFL)