10进制转换16进制

     最近， 在做东西的时候，需要把整数转换为16进制。原理和书本一样：不断的除以16，余数以倒序的方式排列，既是我们要的16进制数！

import java.util.*;
public class Int2hex {
    /**
     * @param args
     */
    public static void main(String[] args) {
        // TODO Auto-generated method stub
         List<String> lst = new ArrayList<String>();
         int input = 65536;
         if (args.length > 0) {
              input = Integer.parseInt(args[0]) ;
         }
         int temp2 = input;

         while (((input % 16) != 0) || (input > 15)) {
             String str1 = "";
             switch (input % 16) {
             case 0:
                 str1 = "0";
                 break;
             case 1:
                 str1 = "1";
                 break;
             case 2:
                 str1 = "2";
                 break;
             case 3:
                 str1 = "3";
                 break;
             case 4:
                 str1 = "4";
                 break;
             case 5:
                 str1 = "5";
                 break;
             case 6:
                 str1 = "6";
                 break;
             case 7:
                 str1 = "7";
                 break;
             case 8:
                 str1 = "8";
                 break;
             case 9:
                 str1 = "9";
                 break;
             case 10:
                 str1 = "A";
                 break;
             case 11:
                 str1 = "B";
                 break;
             case 12:
                 str1 = "C";
                 break;
             case 13:
                 str1 = "D";
                 break;
             case 14:
                 str1 = "E";
                 break;
             case 15:
                 str1 = "F";
                 break;
             }
             lst.add(str1);
             input = input / 16;
         }
         String temp = "";
         int j = lst.size() - 1;
         for (String string : lst) {
             string = lst.get(j);
             temp += string;
             j--;
         }
         System.out.println("Int: " + temp2 + " Hex: 0X" + temp);
    }
}