Talend equivalent for OCONV function in Datastage (Only for time and date)

    package routines;

    import java.text.ParseException;

    public class DateConv {

      public static String oConv(int secToAdd, String format) throws ParseException {

        final String date = "31/12/1967";// 31 Dec 1967
        java.util.Date returnDate = null;
        String returnString = null;
        java.text.DateFormat sdf = new java.text.SimpleDateFormat("dd/MM/yyyy");
        java.util.Date parsedDate = sdf.parse(date);
        java.util.Calendar now = java.util.Calendar.getInstance();
        now.setTime(parsedDate);

        if (format.equals("MT")) { // 02:46
          sdf = new java.text.SimpleDateFormat("HH:mm");
          now.add(java.util.Calendar.SECOND, secToAdd);
          returnDate = now.getTime();
          returnString = sdf.format(returnDate);
        } else if (format.equals("MTS")) { // 02:46:40
          sdf = new java.text.SimpleDateFormat("HH:mm:ss");
          now.add(java.util.Calendar.SECOND, secToAdd);
          returnDate = now.getTime();
          returnString = sdf.format(returnDate);
        } else if (format.equals("MTHS")) { // 02:46:40am
          sdf = new java.text.SimpleDateFormat("HH:mm:ssa");
          now.add(java.util.Calendar.SECOND, secToAdd);
          returnDate = now.getTime();
          returnString = sdf.format(returnDate).toLowerCase();
        } else if (format.equals("MTH")) { // 02:46am
          sdf = new java.text.SimpleDateFormat("HH:mma");
          now.add(java.util.Calendar.SECOND, secToAdd);
          returnDate = now.getTime();
          returnString = sdf.format(returnDate).toLowerCase();
        } else if (format.equals("MT.")) { // 02.46
          sdf = new java.text.SimpleDateFormat("HH.mm");
          now.add(java.util.Calendar.SECOND, secToAdd);
          returnDate = now.getTime();
          returnString = sdf.format(returnDate);
        } else if (format.equals("D2")) { // 3 Feb 93
          sdf = new java.text.SimpleDateFormat("d MMM yy");
          now.add(java.util.Calendar.DAY_OF_MONTH, secToAdd);
          returnDate = now.getTime();
          returnString = sdf.format(returnDate);
        } else if (format.equals("D/E")) { // 3/2/1993
          sdf = new java.text.SimpleDateFormat("d/M/yyyy");
          now.add(java.util.Calendar.DAY_OF_MONTH, secToAdd);
          returnDate = now.getTime();
          returnString = sdf.format(returnDate);
        } else if (format.equals("DI")) { // 3/2/1993
          sdf = new java.text.SimpleDateFormat("d/M/yyyy");
          now.add(java.util.Calendar.DAY_OF_MONTH, secToAdd);
          returnDate = now.getTime();
          returnString = sdf.format(returnDate);
        } else if (format.equals("D2-")) { // 2-3-93
          sdf = new java.text.SimpleDateFormat("M-d-yy");
          now.add(java.util.Calendar.DAY_OF_MONTH, secToAdd);
          returnDate = now.getTime();
          returnString = sdf.format(returnDate);
        } else if (format.equals("D")) { // 31 Dec 1967
          sdf = new java.text.SimpleDateFormat("d MMM yyyy");
          now.add(java.util.Calendar.DAY_OF_MONTH, secToAdd);
          returnDate = now.getTime();
          returnString = sdf.format(returnDate);
        }

        return returnString;
      }

      public static String oConv(String input, String format) throws ParseException {
        String returnString = null;
        java.text.DateFormat sdf = null;

        if (input.equalsIgnoreCase("@DATE") && format.equals("DMD[2,2]")) { // DMD[2,2]
          sdf = new java.text.SimpleDateFormat("MMdd");
          returnString = sdf.format(new java.util.Date());
        } else if (input.equalsIgnoreCase("@DATE") && format.equals("DYMD[4,2,2]")) { // DYMD[4,2,2]
          sdf = new java.text.SimpleDateFormat("yyyyMMdd");
          returnString = sdf.format(new java.util.Date());
        }

        return returnString;
      }

    }