In Java, What Is The Process Of Converting A Byte Array Into A Hex String?

To convert a byte array to a hex string in Java, you can use the following code:

public class ByteArrayToHexString {
    public static String bytesToHex(byte[] bytes) {
        StringBuilder hexString = new StringBuilder();
        for (byte b : bytes) {
            String hex = Integer.toHexString(0xff & b);
            if (hex.length() == 1) {
        return hexString.toString();

    public static void main(String[] args) {
        byte[] byteArray = {10, -20, 35, 0, 127};

This code defines a method bytesToHex that takes a byte array as input and returns a string representing the hex values of the bytes. It iterates over each byte in the array, uses Integer.toHexString to convert the byte to a hex string, and appends it to a StringBuilder. The resulting string is then returned.

In the main method, an example byte array is created and passed to the bytesToHex method. The resulting hex string is printed to the console.


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I'm a passionate tech blogger with an insatiable love for programming! From my early days tinkering with code, I've delved into web dev, mobile apps, and AI. Sharing insights and tutorials with the world is my joy, connecting me to a global community of like-minded tech enthusiasts. Python holds a special place in my heart, but I embrace all challenges. Constantly learning, I attend tech conferences, contribute to open-source projects, and engage in code review sessions. My ultimate goal is to inspire the next generation of developers and contribute positively to the ever-evolving tech landscape. Let's code together!