How to convert a byte into Hexadecimal in Java

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I have an array of bytes and I want to convert it into corresponding hexadecimal values. Is there a function to perform this?
Aug 21, 2018 in Java by Sushmita
• 6,920 points
2,140 views

2 answers to this question.

0 votes
byte[] bytes = {-1, 0, 1, 2, 3 };
    StringBuilder sb = new StringBuilder();
    for (byte b : bytes) {
        sb.append(String.format("%02X ", b));
    }
    System.out.println(sb.toString());
    // prints "FF 00 01 02 03 "
answered Aug 21, 2018 by Parth
• 4,640 points
0 votes
private static final String    HEXES    = "0123456789ABCDEF";

static String getHex(byte[] raw) {
    final StringBuilder hex = new StringBuilder(2 * raw.length);
    for (final byte b : raw) {
        hex.append(HEXES.charAt((b & 0xF0) >> 4)).append(HEXES.charAt((b & 0x0F)));
    }
    return hex.toString();
}
answered Aug 29, 2019 by Sirajul
• 59,230 points

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