shared/MyDate.java


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package shared;

import java.util.*;

/**
 * This class extends the standard Date class and customizes the toString method.
 * This class also contains some helper methods to make the life easier.
 * @author buetow
 *
 */
public class MyDate extends Date {
  private final static long serialVersionUID = 1L;
  private final static String [] DAYS = { "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat" };

  /**
   * Copy constructor.
   * @param data Specifies the date objekt to copy the time from.
   */
  public MyDate(Date date) {
    super(date.getTime());
  }

  /**
   * @see java.lang.Object#toString()
   */
  public String toString() {
    Calendar calendar = Calendar.getInstance();
    calendar.setTime(this);

    String sYear = addZerosToFront(calendar.get(Calendar.YEAR), 4);
    String sMonth = addZerosToFront(calendar.get(Calendar.MONTH) + 1, 2);
    String sDays = addZerosToFront(calendar.get(Calendar.DAY_OF_MONTH), 2);
    String sHours= addZerosToFront(calendar.get(Calendar.HOUR), 2);
    String sMinutes = addZerosToFront(calendar.get(Calendar.MINUTE), 2);
    String sDay = DAYS[calendar.get(Calendar.DAY_OF_WEEK)-1];

    return sDays + "." + sMonth + "." + sYear + " " + sHours + ":" + sMinutes + " " + sDay;
  }

  /**
   * This method adds zeros in front of a number and returns it as a string.
   * @param iValue Specifies the number to add zeros to.
   * @param iWantedLength Specifies the wanted max length of the string.
   * @return Returns the number represented as a string with additional zeros on front.
   */
  public static String addZerosToFront(int iValue, int iWantedLength) {
    String sValue = iValue + "";

    while (sValue.length() < iWantedLength)
      sValue = "0" + sValue;

    return sValue;
  }
}