title: Converting from decimal to hexadecimal
body: <p>I have written a java program that is supposed to convert decimals from 1 to 256 to hexadecimal but the problem comes when i try decimals above 256 after which i start getting incorrect results.
  Here is a my code:</p>
  
  <pre><code>public class Conversion {
  
  public static void main(String[] args) {
  
      System.out.printf("%s%14s", "Decimal", "Hexadecimal");
  
      for(int i = 1; i &lt;= 300; i++) {
          System.out.printf("%7d          ", i);
          decimalToHex(i);
          System.out.println();
      }
  
  }
  
  private static void decimalToHex(int decimal) {
      int count;
      if(decimal &gt;= 256) {
          count = 2;
      } else {
          count = 1;
      }
      for (int i = 1; i &lt;= count; i++) {
          if(decimal &gt;= 256) {
              returnHex(decimal / 256);
              decimal %= 256;
          }
  
          if(decimal &gt;= 16) {
              returnHex(decimal / 16);
              decimal %= 16;
          }
  
          returnHex(decimal);
  
          decimal /= 16;
      }
  }
  
  private static void returnHex(int number) {
      switch(number) {
          case 15:
              System.out.print("F");
              break;
          case 14:
              System.out.print("E");
              break;
          case 13:
              System.out.print("D");
              break;
          case 12:
              System.out.print("C");
              break;
          case 11:
              System.out.print("B");
              break;
          case 10:
              System.out.print("A");
              break;
          default:
              System.out.printf("%d", number);
              break;
      }
  }
  
  }
  </code></pre>
  
  <p>This is the sample of the results that i got:</p>
  
  <pre><code>254              FE
  255              FF
  256              100
  257              111
  264              199
  266              1AA
  271              1FF
  272              1100
  273              1111
  </code></pre>
  
  <p><strong>Note: I have just started learning java so keep it simple if you can. Thank you</strong></p>