Builds a bracketed CSV list from the array : CSV « File « Java Tutorial

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import java.lang.reflect.Array;

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/** Provides a collection of convenience methods for processing and
 * creating objects with <code>String</code> value components.
 *
 * @author Campbell Boucher-Burnett (boucherb@users dot sourceforge.net)
 * @author Fred Toussi (fredt@users dot sourceforge.net)
 * @author Nitin Chauhan
 * @version 1.9.0
 * @since 1.7.0
 */
public class Main {


  /**
   * Builds a bracketed CSV list from the array
   * @param array an array of Objects
   * @return string
   */
  public static String arrayToString(Object array) {

      int          len  = Array.getLength(array);
      int          last = len - 1;
      StringBuffer sb   = new StringBuffer(2 * (len + 1));

      sb.append('{');

      for (int i = 0; i < len; i++) {
          sb.append(Array.get(array, i));

          if (i != last) {
              sb.append(',');
          }
      }

      sb.append('}');

      return sb.toString();
  }


}