?? mfindbydatecommand.java
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package cmd;import core.*;import db.*;import java.text.ParseException;import java.util.*;import javax.swing.JOptionPane;import ui.EnterDateDialog;public class MFindByDateCommand extends MDatabaseCommand{ private static final String [] PARAM_NAMES = { "date" }; private static final String [] PARAM_PROMPTS = { "Enter date (mm/dd/yy):" }; public MFindByDateCommand () throws java.io.IOException { super (); } public String [] getParameterNames () { return PARAM_NAMES; } public String [] getParameterPrompts () { return PARAM_PROMPTS; } public void setParametersGUI () { EnterDateDialog dlog = new EnterDateDialog (this); if (!dlog.isCanceled ()) { setParameter("date", DBUtilities.formatDate (dlog.getDate())); setInitialized (); } } protected void executeDatabaseCommand (HotelDB database) { try { Date date = DBUtilities.parseDate (getParameter ("date")); List reservations = database.getReservations (date); displayResults ("Reservations for " + getParameter ("date"), reservations); } catch (java.text.ParseException e) { System.err.println ("FindByDate: Error in date format: " + getParameter ("date")); System.err.println ("Command not executed."); } } protected void displayResultsText (String title, List reservations) { System.out.println (title); if (reservations.size() > 0) DBUtilities.displayReservations (reservations); else System.out.println ("No reservations on date: " + getParameter ("date")); } public String getMenuName () { return "Find By Date..."; } public String getName () { return "date"; } public String getDescription () { return "Finds all reservations arriving on a given date."; } public Command makeInstance () { try { return new MFindByDateCommand (); } catch (java.io.IOException e) { return null; } }}
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