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Convert byte Array to Hex String in Java
The following is our byte array.
byte[] b = new byte[]{'p', 'q', 'r'};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[]{'p', 'q', 'r'};
/* 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
pqr Byte array to Hex String = 707172
Updated on: 26-Jun-2020
788 Views
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