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Java Program to return the hexadecimal value of the supplied byte array
The following is the supplied byte array −
byte[] b = new byte[]{'x', 'y', 'z'};We have created a custom method “display” here and passed the byte array value. The same method converts byte array to hex string −
public static String display(byte[] b1){
StringBuilder strBuilder = new StringBuilder();
for(byte val : b1){
strBuilder.append(String.format("%02x", val&0xff));
}
return strBuilder.toString();
}Let us see the entire example now −
Example
public class Demo {
public static void main(String args[]) {
byte[] b = new byte[]{'x', 'y', 'z'};
/* byte array cannot be displayed as String because it may have non-printable
characters e.g. 0 is NUL, 5 is ENQ in ASCII format */
String str = new String(b);
System.out.println(str);
// byte array to Hex String
System.out.println("Byte array to Hex String = " + display(b));
}
public static String display(byte[] b1){
StringBuilder strBuilder = new StringBuilder();
for(byte val : b1){
strBuilder.append(String.format("%02x", val&0xff));
}
return strBuilder.toString();
}
}Output
xyz Byte array to Hex String = 78797a
Updated on: 30-Jul-2019
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