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Editorial Team
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Asked: 2026-05-15T11:05:41+00:00

For a project, I have to convert a binary string into (an array of)

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For a project, I have to convert a binary string into (an array of) bytes and write it out to a file in binary.

Say that I have a sentence converted into a code string using a huffman encoding. For example, if the sentence was: “hello” h = 00 e = 01, l = 10, o = 11

Then the string representation would be 0001101011.

How would I convert that into a byte? <– If that question doesn’t make sense it’s because I know little about bits/byte bitwise shifting and all that has to do with manipulating 1’s and 0’s.

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1 Answer

  1. Editorial Team

    If you really want (or have to) creating a string representation of bits, you could split the string in substrings of length 8 (beware of the last one which is not necessarily of length 8).

    Integer
    has a method to parse string representations, a sequence of ‘0’ and ‘1’s can be parsed by calling with radix = 2.

    static int parseInt(String s, int radix)

    Parses the string argument as a signed integer in the radix specified by the second argument.

    —

    EDIT:
    According to the comments Byte.parseByte is the way to go.

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