string to hexadecimal in java

1// String to hexadecimal in java
2import java.util.Scanner;
3public class StringToHexJava
4{
5   public static void main(String[] args)
6   {
7      Scanner sc = new Scanner(System.in);
8      System.out.println("Please enter a string: ");
9      String strInput = sc.next();
10      StringBuffer sb = new StringBuffer();
11      char[] chArray = strInput.toCharArray();
12      for(int a = 0; a < chArray.length; a++)
13      {
14         String strHexadecimal = Integer.toHexString(chArray[a]);
15         sb.append(strHexadecimal);
16      }
17      String strOutput = sb.toString();
18      System.out.println(strOutput);
19      sc.close();
20   }
21}