how to print circle pattern in java? [on hold]

for example,

            *  *  *  *
        *               *
      *                   *
     *                     *
     *                     *
     *                     *
     *                     *
      *                   *
        *               *
           *  *   *  *

           a  b  c  d
        d               e
     `c                   a
     b                     b
     a                     c
     e                     d
     d                     e
      c                   a
        b               b
           a  e   d  c