Cara Menampilkan Kode ASCII di Java

package kriptografi;
import java.io.*;
import javax.swing.*;
 class p{
 public static void main(String[] args) throws IOException {
 // Write the header.
 System.out.printf("%1$-8s %2$-10s %3$s\n",
  "Decimal", "ASCII", "Hex");'

 // Loop semua kode  ASCII yang tersedia.
 int min = 0;
 int max = 255;
 for (int i = min; i <= max; i++) {
     char c = (char) i;
     String display = "";
     // mengganti  karakter  yang tidak  terlihat(whitespace ).
     if (Character.isWhitespace(c)) {
  switch (c) {
  case '\t':
      display = "\\t";
      break;
  case ' ':
      display = "space";
      break;
  case '\n':
      display = "\\n";
      break;
  case '\r':
      display = "\\r";
      break;
  case '\f':
      display = "\\f";
      break;
  default:
      display = "whitespace";
      break;
  }
     } else if (Character.isISOControl(c)) {
  display = "control";
     } else {
  // karakter yang terlihat.
  display = Character.toString(c);
     }
     // mengatur padding
     System.out.printf("%1$-8d %2$-10s %3$s\n",
      i, display, Integer.toHexString(i));
 }
    }
    System.out.printl("Kriptografi tonnyaray");
 }