Java - A Way to Manually Sort an Array

public class mySort
{
  public static void main(String[] str)
   {
      int[] array1 = {53,43,33};
      int idx2, idx1, temp;
      //----------------------------------------------
      // The 1st index is set to 0. On each loop it's 
      // compared against the length, and incremented.
      //----------------------------------------------
      for (idx1 = 0; idx1 < array1.length; idx1++)
      {
        //--------------------------------------------
        // The 2nd index is set to 1 position higher 
        // than the 1st. On each loop it's compared 
        // against the length, and incremented.
        //--------------------------------------------
        for (idx2 = idx1 +1; idx2 < array1.length; idx2++)
        {
          //------------------------------------------
          // If the 1st number is greater than the 2nd
          // number, the two numbers switch. The 2nd
          // has to be stored so it's not overwritten.
          //------------------------------------------
          if (array1[idx1] > array1[idx2])
          {
            temp         = array1[idx2];
            array1[idx2] = array1[idx1];
            array1[idx1] = temp;
          }
        }
      }
      //----------------------------------------
      // display data when the sort is done
      //----------------------------------------
      for (idx1 = 0; idx1 < array1.length; idx1++)
      {
        System.out.printf("Final: array1(%d)= %d\n", idx1, array1[idx1]);
      }
   }
}