Algorithm
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Input: Accept a byte array as input.
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Initialize an empty string to store the hexadecimal representation.
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Iterate through each byte in the array.
- For each byte, extract the two nibbles (4 bits each).
- Convert each nibble to its hexadecimal equivalent (0-9, A-F).
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Append the hexadecimal representation of each nibble to the string.
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Continue iterating until all bytes have been processed.
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The resulting string is the hexadecimal representation of the byte array.
Code Examples
#1 Code Example- Convert Byte Array to Hex value
Code -
Java Programming
public class ByteHex {
public static void main(String[] args) {
byte[] bytes = {10, 2, 15, 11};
for (byte b : bytes) {
String st = String.format("%02X", b);
System.out.print(st);
}
}
}Output
0A020F0B
#2 Code Example- Convert Byte Array to Hex value using byte operations
Code -
Java Programming
public class ByteHex {
private final static char[] hexArray = "0123456789ABCDEF".toCharArray();
public static String bytesToHex(byte[] bytes) {
char[] hexChars = new char[bytes.length * 2];
for ( int j = 0; j < bytes.length; j++ ) {
int v = bytes[j] & 0xFF;
hexChars[j * 2] = hexArray[v >>> 4];
hexChars[j * 2 + 1] = hexArray[v & 0x0F];
}
return new String(hexChars);
}
public static void main(String[] args) {
byte[] bytes = {10, 2, 15, 11};
String s = bytesToHex(bytes);
System.out.println(s);
}
}Output
0A020F0B
Demonstration
Java Programing Example to Convert Byte Array to Hexadecimal-DevsEnv