import java.util.*;

class ASCIITable {

  private Hashtable hex2char = new Hashtable();
  private Hashtable char2hex = new Hashtable();

  ASCIITable(){

	String s;
	String v;

	char2hex.put(s = "+", v = "2B");
	hex2char.put(v, s);
	char2hex.put(s = "-", v = "2D");
	hex2char.put(v, s);
	char2hex.put(s = "*", v = "2A");
	hex2char.put(v, s);
	char2hex.put(s = "/", v = "2F");
	hex2char.put(v, s);
	char2hex.put(s = "0", v = "30");
	hex2char.put(v, s);
	char2hex.put(s = "1", v = "31");
	hex2char.put(v, s);
	char2hex.put(s = "2", v = "32");
	hex2char.put(v, s);
	char2hex.put(s = "3", v = "33");
	hex2char.put(v, s);
	char2hex.put(s = "4", v = "34");
	hex2char.put(v, s);
	char2hex.put(s = "5", v = "35");
	hex2char.put(v, s);
	char2hex.put(s = "6", v = "36");
	hex2char.put(v, s);
	char2hex.put(s = "7", v = "37");
	hex2char.put(v, s);
	char2hex.put(s = "8", v = "38");
	hex2char.put(v, s);
	char2hex.put(s = "9", v = "39");
	hex2char.put(v, s);
	char2hex.put(s = "a", v = "61");
	hex2char.put(v, s);
	char2hex.put(s = "b", v = "62");
	hex2char.put(v, s);
	char2hex.put(s = "c", v = "63");
	hex2char.put(v, s);
	char2hex.put(s = "d", v = "64");
	hex2char.put(v, s);
	char2hex.put(s = "e", v = "65");
	hex2char.put(v, s);
	char2hex.put(s = "f", v = "66");
	hex2char.put(v, s);
	char2hex.put(s = "g", v = "67");
	hex2char.put(v, s);
	char2hex.put(s = "h", v = "68");
	hex2char.put(v, s);
	char2hex.put(s = "i", v = "69");
	hex2char.put(v, s);
	char2hex.put(s = "j", v = "6A");
	hex2char.put(v, s);
	char2hex.put(s = "k", v = "6B");
	hex2char.put(v, s);
	char2hex.put(s = "l", v = "6C");
	hex2char.put(v, s);
	char2hex.put(s = "m", v = "6D");
	hex2char.put(v, s);
	char2hex.put(s = "n", v = "6E");
	hex2char.put(v, s);
	char2hex.put(s = "o", v = "6F");
	hex2char.put(v, s);
	char2hex.put(s = "p", v = "70");
	hex2char.put(v, s);
	char2hex.put(s = "q", v = "71");
	hex2char.put(v, s);
	char2hex.put(s = "r", v = "72");
	hex2char.put(v, s);
	char2hex.put(s = "s", v = "73");
	hex2char.put(v, s);
	char2hex.put(s = "t", v = "74");
	hex2char.put(v, s);
	char2hex.put(s = "u", v = "75");
	hex2char.put(v, s);
	char2hex.put(s = "v", v = "76");
	hex2char.put(v, s);
	char2hex.put(s = "w", v = "77");
	hex2char.put(v, s);
	char2hex.put(s = "x", v = "78");
	hex2char.put(v, s);
	char2hex.put(s = "y", v = "79");
	hex2char.put(v, s);
	char2hex.put(s = "z", v = "7A");
	hex2char.put(v, s);
	char2hex.put(s = " ", v = "20");
	hex2char.put(v, s);
	char2hex.put(s = "?", v = "3F");
	hex2char.put(v, s);
  }

  String getChar(String hex){
	return (String)hex2char.get(hex);
  }

  String getHex(String ch){
	return (String)char2hex.get(ch);
  }

  void printElements(){
	Enumeration e = char2hex.keys();
	System.out.println("CHARACTER to ASCII table:");
	while(e.hasMoreElements()){
		String c = (String)e.nextElement();
		System.out.println(c + "\t" + "0x" + ((String)char2hex.get(c)).toUpperCase());
	}

	e = hex2char.keys();
	System.out.println(" ");
	System.out.println("ASCII to CHARACTER table:");
	while(e.hasMoreElements()){
		String i = (String)e.nextElement();
		System.out.println("0x" + i.toUpperCase() + "\t" + (String)hex2char.get(i));
	}	
  }
} /*end of ASCIITable*/