Display calendar to pick a date in java

Question

In other languages like VB  C   in occasions where you want the user to enter a date  say in a text box we can make a calendar to appear once you click on it  So the user can click on the corresponding date and that date will be put to the text box   By that way we can get rid of problems that can be caused due to dates in an incorrect format  I need to know how we can achieve this in java   Actually  I need to combine this with a JTable  there is a column where the date need to be entered  But users may enter dates in various formats  So I thought of going to something like this  Hope there is a way to do this  easily   Will anyone please show me how to do this  Any help is greatly appreciated    Thank you

User · Answer

Another easy method in Netbeans is also avaiable here  There are libraries inside Netbeans itself where the solutions for this type of situations are available Select the relevant one as well It is much easier After doing the prescribed steps in the link please restart Netbeans   Step1 - Select Tools- gt Palette- gt Swing AWT Components Step2 - Click  Add from JAR in Palette Manager Step3 - Browse to  NETBEANS HOME  ide modules ext and select swingx-0 9 5 jar Step4 - This will bring up a list of all the components available for the palette   Lots of goodies here   Select JXDatePicker  Step5 - Select Swing Controls  amp  click finish Step6 - Restart NetBeans IDE and see the magic

User · Answer

I wrote a DateTextField component   import java awt BorderLayout  import java awt Color  import java awt Cursor  import java awt Dimension  import java awt FlowLayout  import java awt Font  import java awt Frame  import java awt GridLayout  import java awt Point  import java awt event ActionEvent  import java awt event ActionListener  import java awt event MouseAdapter  import java awt event MouseEvent  import java text ParseException  import java text SimpleDateFormat  import java util Calendar  import java util Date   import javax swing JButton  import javax swing JDialog  import javax swing JLabel  import javax swing JPanel  import javax swing JSpinner  import javax swing JTextField  import javax swing SpinnerNumberModel  import javax swing SwingConstants  import javax swing SwingUtilities  import javax swing border LineBorder  import javax swing event ChangeEvent  import javax swing event ChangeListener   public class DateTextField extends JTextField        private static String DEFAULT DATE FORMAT    MM dd yyyy       private static final int DIALOG WIDTH   200      private static final int DIALOG HEIGHT   200       private SimpleDateFormat dateFormat      private DatePanel datePanel   null      private JDialog dateDialog   null       public DateTextField             this new Date                public DateTextField String dateFormatPattern  Date date            this date           DEFAULT DATE FORMAT   dateFormatPattern             public DateTextField Date date            setDate date           setEditable false           setCursor new Cursor Cursor HAND CURSOR            addListeners               private void addListeners             addMouseListener new MouseAdapter                 public void mouseClicked MouseEvent paramMouseEvent                    if  datePanel    null                        datePanel   new DatePanel                                      Point point   getLocationOnScreen                    point y   point y   30                  showDateDialog datePanel  point                                        private void showDateDialog DatePanel dateChooser  Point position            Frame owner    Frame  SwingUtilities                  getWindowAncestor DateTextField this           if  dateDialog    null    dateDialog getOwner      owner                dateDialog   createDateDialog owner  dateChooser                     dateDialog setLocation getAppropriateLocation owner  position            dateDialog setVisible true              private JDialog createDateDialog Frame owner  JPanel contentPanel            JDialog dialog   new JDialog owner   Date Selected   true           dialog setUndecorated true           dialog getContentPane   add contentPanel  BorderLayout CENTER           dialog pack            dialog setSize DIALOG WIDTH  DIALOG HEIGHT           return dialog             private Point getAppropriateLocation Frame owner  Point position            Point result   new Point position           Point p   owner getLocation            int offsetX    position x   DIALOG WIDTH  -  p x   owner getWidth             int offsetY    position y   DIALOG HEIGHT  -  p y   owner getHeight              if  offsetX  gt  0                result x -  offsetX                     if  offsetY  gt  0                result y -  offsetY                     return result             private SimpleDateFormat getDefaultDateFormat             if  dateFormat    null                dateFormat   new SimpleDateFormat DEFAULT DATE FORMAT                     return dateFormat             public void setText Date date            setDate date              public void setDate Date date            super setText getDefaultDateFormat   format date               public Date getDate             try               return getDefaultDateFormat   parse getText               catch  ParseException e                return new Date                         private class DatePanel extends JPanel implements ChangeListener           int startYear   1980          int lastYear   2050           Color backGroundColor   Color gray          Color palletTableColor   Color white          Color todayBackColor   Color orange          Color weekFontColor   Color blue          Color dateFontColor   Color black          Color weekendFontColor   Color red           Color controlLineColor   Color pink          Color controlTextColor   Color white           JSpinner yearSpin          JSpinner monthSpin          JButton     daysButton   new JButton 6  7            DatePanel                 setLayout new BorderLayout                 setBorder new LineBorder backGroundColor  2                setBackground backGroundColor                JPanel topYearAndMonth   createYearAndMonthPanal                add topYearAndMonth  BorderLayout NORTH               JPanel centerWeekAndDay   createWeekAndDayPanal                add centerWeekAndDay  BorderLayout CENTER                reflushWeekAndDay                       private JPanel createYearAndMonthPanal                 Calendar cal   getCalendar                int currentYear   cal get Calendar YEAR               int currentMonth   cal get Calendar MONTH    1               JPanel panel   new JPanel                panel setLayout new FlowLayout                 panel setBackground controlLineColor                yearSpin   new JSpinner new SpinnerNumberModel currentYear                      startYear  lastYear  1                yearSpin setPreferredSize new Dimension 56  20                yearSpin setName  Year                yearSpin setEditor new JSpinner NumberEditor yearSpin                        yearSpin addChangeListener this               panel add yearSpin                JLabel yearLabel   new JLabel  Year                yearLabel setForeground controlTextColor               panel add yearLabel                monthSpin   new JSpinner new SpinnerNumberModel currentMonth  1                      12  1                monthSpin setPreferredSize new Dimension 35  20                monthSpin setName  Month                monthSpin addChangeListener this               panel add monthSpin                JLabel monthLabel   new JLabel  Month                monthLabel setForeground controlTextColor               panel add monthLabel                return panel                     private JPanel createWeekAndDayPanal                 String colname        S    M    T    W    T    F    S                 JPanel panel   new JPanel                panel setFont new Font  Arial   Font PLAIN  10                panel setLayout new GridLayout 7  7                panel setBackground Color white                for  int i   0  i  lt  7  i                      JLabel cell   new JLabel colname i                    cell setHorizontalAlignment JLabel RIGHT                   if  i    0    i    6                        cell setForeground weekendFontColor                     else                       cell setForeground weekFontColor                                     panel add cell                              int actionCommandId   0              for  int i   0  i  lt  6  i                    for  int j   0  j  lt  7  j                          JButton numBtn   new JButton                        numBtn setBorder null                       numBtn setHorizontalAlignment SwingConstants RIGHT                       numBtn setActionCommand String                              valueOf actionCommandId                        numBtn setBackground palletTableColor                       numBtn setForeground dateFontColor                       numBtn addActionListener new ActionListener                             public void actionPerformed ActionEvent event                                JButton source    JButton  event getSource                                if  source getText   length      0                                    return                                                            dayColorUpdate true                               source setForeground todayBackColor                               int newDay   Integer parseInt source getText                                 Calendar cal   getCalendar                                cal set Calendar DAY OF MONTH  newDay                               setDate cal getTime                                  dateDialog setVisible false                                                                          if  j    0    j    6                          numBtn setForeground weekendFontColor                       else                         numBtn setForeground dateFontColor                       daysButton i  j    numBtn                      panel add numBtn                       actionCommandId                                   return panel                     private Calendar getCalendar                 Calendar calendar   Calendar getInstance                calendar setTime getDate                 return calendar                     private int getSelectedYear                 return   Integer  yearSpin getValue    intValue                       private int getSelectedMonth                 return   Integer  monthSpin getValue    intValue                       private void dayColorUpdate boolean isOldDay                Calendar cal   getCalendar                int day   cal get Calendar DAY OF MONTH               cal set Calendar DAY OF MONTH  1               int actionCommandId   day - 2   cal get Calendar DAY OF WEEK               int i   actionCommandId   7              int j   actionCommandId   7              if  isOldDay                    daysButton i  j  setForeground dateFontColor                 else                   daysButton i  j  setForeground todayBackColor                                    private void reflushWeekAndDay                 Calendar cal   getCalendar                cal set Calendar DAY OF MONTH  1               int maxDayNo   cal getActualMaximum Calendar DAY OF MONTH               int dayNo   2 - cal get Calendar DAY OF WEEK               for  int i   0  i  lt  6  i                      for  int j   0  j  lt  7  j                          String s                           if  dayNo  gt   1  amp  amp  dayNo  lt   maxDayNo                            s   String valueOf dayNo                                             daysButton i  j  setText s                       dayNo                                                dayColorUpdate false                      public void stateChanged ChangeEvent e                dayColorUpdate true                JSpinner source    JSpinner  e getSource                Calendar cal   getCalendar                if  source getName   equals  Year                      cal set Calendar YEAR  getSelectedYear                   else                   cal set Calendar MONTH  getSelectedMonth   - 1                             setDate cal getTime                 reflushWeekAndDay

User · Answer

Open your Java source code document and navigate to the JTable object you have created inside of your Swing class  Create a new TableModel object that holds a DatePickerTable  You must create the DatePickerTable with a range of date values in MMDDYYYY format  The first value is the begin date and the last is the end date  In code  this looks like   TableModel datePicker   new DatePickerTable  01011999   12302000     Set the display interval in the datePicker object  By default each day is displayed  but you may set a regular interval  To set a 15-day interval between date options  use this code   datePicker interval   15   Attach your table model into your JTable   JTable newtable   new JTable  datePicker     Your Java application now has a drop-down date selection dialog

User · Answer

The LGoodDatePicker library includes a  swing  DatePicker component  which allows the user to choose dates from a calendar   By default  the users can also type dates from the keyboard  but keyboard entry can be disabled if desired   The DatePicker has automatic data validation  which means  among other things  that any date that the user enters will always be converted to your desired date format    Fair disclosure  I m the primary developer   Since the DatePicker is a swing component  you can add it to any other swing container including  in your scenario  the cells of a JTable   The most commonly used date formats are automatically supported  and additional date formats can be added if desired    To enforce your desired date format  you would most likely want to set your chosen format to be the default  display format  for the DatePicker  Formats can be specified by using the Java 8 DateTimeFormatter Patterns  No matter what the user types  or clicks   the date will always be converted to the specified format as soon as the user is done   Besides the DatePicker  the library also has the TimePicker and DateTimePicker components  I pasted screenshots of all the components  and the demo program  below    The library can be installed into your Java project from the project release page   The project home page is on Github at  https   github com LGoodDatePicker LGoodDatePicker

User · Answer

I found JXDatePicker as a better solution to this  It gives what you need and very easy to use        import java text SimpleDateFormat  import java util Calendar  import javax swing JFrame  import javax swing JPanel  import org jdesktop swingx JXDatePicker   public class DatePickerExample extends JPanel        public static void main String   args            JFrame frame   new JFrame  JXPicker Example            JPanel panel   new JPanel             frame setDefaultCloseOperation JFrame EXIT ON CLOSE           frame setBounds 400  400  250  100            JXDatePicker picker   new JXDatePicker            picker setDate Calendar getInstance   getTime             picker setFormats new SimpleDateFormat  dd MM yyyy              panel add picker           frame getContentPane   add panel            frame setVisible true

[java] Display calendar to pick a date in java

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