The post briefs above how you can convert byte Array to Hex values and print those on terminal. You are mostly be needing this conversion when you work closely with byte operations like as needed in network communications etc. We will take the same example as we used in our another post “Byte Array To Integer And Integer to Byte Array Conversion using JAVA” $ vim ByteArrayToHex.java import java.io.*; public class ByteArrayToHex { private static String printHex = null; public static void main(String[] args) throws Exception { byte[] byteArray = {07, 14, 30, 39}; //print every byte on new line for (int i=0; i < byteArray.length; i++) { printHex = String.format("%02X", byteArray[i]); System.out.println("byteArray Dec Value: " + byteArray[i] + " Hex: " + printHex); } //print in Single Line for (int i=0; i < byteArray.length; i++) { printHex = String.format("%02X", byteArray[i]); System.out.print(printHex); } //empty new line for clear display System.out.println(); } } $ javac ByteArrayToHex.java $ java ByteArrayToHex byteArray Dec Value: 7 Hex: 07 byteArray Dec Value: 14 Hex: 0E byteArray Dec Value: 30 Hex: 1E byteArray Dec Value: 39 Hex: 27 070E1E27

Command line execution

Terminalbash
sed in our another post  “Byte Array To Integer And Integer to Byte Array Conversion using JAVA” $ vim ByteArrayToHex.java import java.io.*; public class ByteArrayToHex {         private static String printHex = null;         public static void main(String[] args) throws Exception {                 byte[] byteArray = {07, 14, 30, 39};                 //print every byte on new line                 for (int i=0; i < byteArray.length; i++) {                         printHex = String.format("%02X", byteArray[i]);                         System.out.println("byteArray Dec Value: " + byteArray[i] + " Hex: " + printHex);                 }                 //print in Single Line                 for (int i=0; i < byteArray.length; i++) {                         printHex = String.format("%02X", byteArray[i]);                         System.out.print(printHex);                 }                         //empty new line for clear display                         System.out.println();         } } $ javac ByteArrayToHex.java $ java ByteArrayToHex  byteArray Dec Value: 7 Hex: 07 byteArray Dec Value: 14 Hex: 0E byteArray Dec Value: 30 Hex: 1E byteArray Dec Value: 39 Hex: 27 070E1E27

Gotchas and common issues

  • Permission checks - verify user access rights and sudo privileges before executing system-level operations.

  • Environment configuration - double-check path variables and dependency versions to prevent runtime failures.

  • Backup safeguards - maintain configuration backups before applying system or database modifications.

Following these steps ensures clean configuration and reliable execution for convert byte array to hex using java.