有没有构造一个时间文本框的类????

Question

没有。
具体的要自己写。
可以参照：
http://search.csdn.net/expert/topic/54/5401/2003/2/14/1426935.htm

Answer 1

package com.founder.fwf.designer.dialog;//////////////////////////////////////////////////////////////
// DateComboBox.java
//////////////////////////////////////////////////////////////import java.awt.*;
import java.awt.event.*;
import java.util.Calendar;
import java.text.SimpleDateFormat;import javax.swing.*;
import javax.swing.event.PopupMenuListener;
import javax.swing.event.PopupMenuEvent;
import javax.swing.plaf.ComboBoxUI;
import javax.swing.plaf.basic.ComboPopup;
import javax.swing.plaf.metal.MetalComboBoxUI;
import javax.swing.border.Border;
import javax.swing.border.EtchedBorder;
import javax.swing.border.EmptyBorder;import com.sun.java.swing.plaf.motif.MotifComboBoxUI;
import com.sun.java.swing.plaf.windows.WindowsComboBoxUI;//import com.iaworld.gui.window.text.DateFormatDocument;
import javax.swing.JTextField;
import java.util.ResourceBundle;//////////////////////////////////////////////////////////////
public class DateComboBox
    extends JComboBox
{  static ResourceBundle res = ResourceBundle.getBundle("com.founder.fwf.designer.dialog.res.DialogRes");
  protected SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd");
  protected JTextField textField = ( (JTextField)this.getEditor().getEditorComponent());
  public DateComboBox() {
    this.setEditable(true);    //textField.setDocument(new DateFormatDocument());
    textField.addKeyListener(new KeyAdapter() {
      public void keyReleased(KeyEvent e) {
        if (e.getKeyCode() == KeyEvent.VK_ENTER) {
          textFieldTransferFocus();
        }
      }
    });
    java.text.SimpleDateFormat sdf = new java.text.SimpleDateFormat(
        "yyyy-MM-dd");
    setSelectedItem(sdf.format(new java.util.Date()));
  }  public void textFieldTransferFocus() {
    ( (JTextField)this.getEditor().getEditorComponent()).transferFocus();
  }  public void setDateFormat(SimpleDateFormat dateFormat) {
    this.dateFormat = dateFormat;
  }  public String getDatestr(){
    return textField.getText();
  }  public void setDatestr(String datestr){
    this.textField.setText(datestr);
  }  public void setSelectedItem(Object item) {
    // Could put extra logic here or in renderer when item is instanceof Date, Calendar, or String
    // Dont keep a list ... just the currently selected item
    removeAllItems(); // hides the popup if visible
    addItem(item);
    super.setSelectedItem(item);
  }  public void updateUI() {
    ComboBoxUI cui = (ComboBoxUI) UIManager.getUI(this);
    if (cui instanceof MetalComboBoxUI) {
      cui = new MetalDateComboBoxUI();
    }
    else if (cui instanceof MotifComboBoxUI) {
      cui = new MotifDateComboBoxUI();
    }
    else if (cui instanceof WindowsComboBoxUI) {
      cui = new WindowsDateComboBoxUI();
    }
    setUI(cui);
  }  // UI Inner classes -- one for each supported Look and Feel
  class MetalDateComboBoxUI
      extends MetalComboBoxUI {
    protected ComboPopup createPopup() {
      return new DatePopup(comboBox);
    }
  }  class WindowsDateComboBoxUI
      extends WindowsComboBoxUI {
    protected ComboPopup createPopup() {
      return new DatePopup(comboBox);
    }
  }  class MotifDateComboBoxUI
      extends MotifComboBoxUI {
    protected ComboPopup createPopup() {
      return new DatePopup(comboBox);
    }
  }  // DatePopup inner class
  class DatePopup
      implements ComboPopup, MouseMotionListener,
      MouseListener, KeyListener, PopupMenuListener {    protected JComboBox comboBox;
    protected Calendar calendar;
    protected JPopupMenu popup;
    protected JLabel monthLabel;
    protected JPanel days = null;
    protected SimpleDateFormat monthFormat = new SimpleDateFormat("yyyy-MM");    protected Color selectedBackground;
    protected Color selectedForeground;
    protected Color background;
    protected Color foreground;    public DatePopup(JComboBox comboBox) {
      this.comboBox = comboBox;
      calendar = Calendar.getInstance();
      // check Look and Feel
      background = UIManager.getColor("ComboBox.background");
      foreground = UIManager.getColor("ComboBox.foreground");
      selectedBackground = UIManager.getColor(
          "ComboBox.selectionBackground");
      selectedForeground = UIManager.getColor(
          "ComboBox.selectionForeground");      initializePopup();
    }    //========================================
    // begin ComboPopup method implementations
    //
    public void show() {
      try {
        // if setSelectedItem() was called with a valid date, adjust the calendar
        calendar.setTime(dateFormat.parse(comboBox.getSelectedItem().
                                          toString()));
      }
      catch (Exception e) {}
      updatePopup();
      popup.show(comboBox, 0, comboBox.getHeight());
    }    public void hide() {
      popup.setVisible(false);
    }    protected JList list = new JList();
    public JList getList() {
      return list;
    }    public MouseListener getMouseListener() {
      return this;
    }    public MouseMotionListener getMouseMotionListener() {
      return this;
    }    public KeyListener getKeyListener() {
      return this;
    }    public boolean isVisible() {
      return popup.isVisible();
    }    public void uninstallingUI() {
      popup.removePopupMenuListener(this);
    }    // end ComboPopup method implementations    // begin Event Listeners
    // MouseListener    public void mousePressed(MouseEvent e) {}    public void mouseReleased(MouseEvent e) {}    // something else registered for MousePressed
    public void mouseClicked(MouseEvent e) {
      if (!SwingUtilities.isLeftMouseButton(e))
        return;
      if (!comboBox.isEnabled())
        return;
      if (comboBox.isEditable()) {
        comboBox.getEditor().getEditorComponent().requestFocus();
      }
      else {
        comboBox.requestFocus();
      }
      togglePopup();
    }    protected boolean mouseInside = false;
    public void mouseEntered(MouseEvent e) {
      mouseInside = true;
    }    public void mouseExited(MouseEvent e) {
      mouseInside = false;
    }    // MouseMotionListener
    public void mouseDragged(MouseEvent e) {}    public void mouseMoved(MouseEvent e) {}    // KeyListener
    public void keyPressed(KeyEvent e) {}    public void keyTyped(KeyEvent e) {}    public void keyReleased(KeyEvent e) {
      if (e.getKeyCode() == KeyEvent.VK_SPACE ||
          e.getKeyCode() == KeyEvent.VK_ENTER) {
        togglePopup();
      }
    }    /**
     * Variables hideNext and mouseInside are used to
     * hide the popupMenu by clicking the mouse in the JComboBox
     */
    public void popupMenuCanceled(PopupMenuEvent e) {}    protected boolean hideNext = false;
    public void popupMenuWillBecomeInvisible(PopupMenuEvent e) {
      hideNext = mouseInside;
    }

Answer 2

public void popupMenuWillBecomeVisible(PopupMenuEvent e) {}    //
    // end Event Listeners
    //=================================================================    //===================================================================
    // begin Utility methods
    //    protected void togglePopup() {
      if (isVisible() || hideNext) {
        hide();
      }
      else {
        show();
      }
      hideNext = false;
    }    //
    // end Utility methods
    //=================================================================    // Note *** did not use JButton because Popup closes when pressed
    protected JLabel createUpdateButton(final int field, final int amount) {
      final JLabel label = new JLabel();
      final Border selectedBorder = new EtchedBorder();
      final Border unselectedBorder = new EmptyBorder(selectedBorder.
          getBorderInsets(new JLabel()));
      label.setBorder(unselectedBorder);
      label.setForeground(foreground);
      label.addMouseListener(new MouseAdapter() {
        public void mouseReleased(MouseEvent e) {
          calendar.add(field, amount);
          updatePopup();
        }        public void mouseEntered(MouseEvent e) {
          label.setBorder(selectedBorder);
        }        public void mouseExited(MouseEvent e) {
          label.setBorder(unselectedBorder);
        }
      });
      return label;
    }    protected void initializePopup() {
      JPanel header = new JPanel(); // used Box, but it wasn't Opaque
      header.setLayout(new BoxLayout(header, BoxLayout.X_AXIS));
      header.setBackground(background);
      header.setOpaque(true);      JLabel label;
      label = createUpdateButton(Calendar.YEAR, -1);
      label.setText("<<");
      label.setToolTipText("PreviousYear");      header.add(Box.createHorizontalStrut(12));
      header.add(label);
      header.add(Box.createHorizontalStrut(12));      label = createUpdateButton(Calendar.MONTH, -1);
      label.setText("<");
      label.setToolTipText("PreviousMonth");
      header.add(label);      monthLabel = new JLabel("", JLabel.CENTER);
      monthLabel.setForeground(foreground);
      header.add(Box.createHorizontalGlue());
      header.add(monthLabel);
      header.add(Box.createHorizontalGlue());      label = createUpdateButton(Calendar.MONTH, 1);
      label.setText(">");
      label.setToolTipText("NextMonth");
      header.add(label);      label = createUpdateButton(Calendar.YEAR, 1);
      label.setText(">>");
      label.setToolTipText("NextYear");      header.add(Box.createHorizontalStrut(12));
      header.add(label);
      header.add(Box.createHorizontalStrut(12));      popup = new JPopupMenu();
      popup.setBorder(BorderFactory.createLineBorder(Color.black));
      popup.setLayout(new BorderLayout());
      popup.setBackground(background);
      popup.addPopupMenuListener(this);
      popup.add(BorderLayout.NORTH, header);
    }    // update the Popup when either the month or the year of the calendar has been changed
    protected void updatePopup() {
      monthLabel.setText(monthFormat.format(calendar.getTime()));
      if (days != null) {
        popup.remove(days);
      }
      days = new JPanel(new GridLayout(0, 7));
      days.setBackground(background);
      days.setOpaque(true);      Calendar setupCalendar = (Calendar) calendar.clone();
      setupCalendar.set(Calendar.DAY_OF_WEEK,
                        setupCalendar.getFirstDayOfWeek());
      for (int i = 0; i < 7; i++) {
        int dayInt = setupCalendar.get(Calendar.DAY_OF_WEEK);
        JLabel label = new JLabel();
        label.setHorizontalAlignment(JLabel.CENTER);
        label.setForeground(foreground);
        if (dayInt == Calendar.SUNDAY) {
          label.setText("Sun");
        }
        else if (dayInt == Calendar.MONDAY) {
          label.setText("Mon");
        }
        else if (dayInt == Calendar.TUESDAY) {
          label.setText("Tue");
        }
        else if (dayInt == Calendar.WEDNESDAY) {
          label.setText("Wed");
        }
        else if (dayInt == Calendar.THURSDAY) {
          label.setText("Thu");
        }
        else if (dayInt == Calendar.FRIDAY) {
          label.setText("Fri");
        }
        else if (dayInt == Calendar.SATURDAY) {
          label.setText("Sat");
        }
        days.add(label);
        setupCalendar.roll(Calendar.DAY_OF_WEEK, true);
      }
      setupCalendar = (Calendar) calendar.clone();
      setupCalendar.set(Calendar.DAY_OF_MONTH, 1);
      int first = setupCalendar.get(Calendar.DAY_OF_WEEK);
      for (int i = 0; i < (first - 1); i++) {
        days.add(new JLabel(""));
      }
      for (int i = 1;
           i <= setupCalendar.getActualMaximum(Calendar.DAY_OF_MONTH); i++) {
        final int day = i;
        final JLabel label = new JLabel(String.valueOf(day));
        label.setHorizontalAlignment(JLabel.CENTER);
        label.setForeground(foreground);
        label.addMouseListener(new MouseListener() {
          public void mousePressed(MouseEvent e) {}          public void mouseClicked(MouseEvent e) {}          public void mouseReleased(MouseEvent e) {
            label.setOpaque(false);
            label.setBackground(background);
            label.setForeground(foreground);
            calendar.set(Calendar.DAY_OF_MONTH, day);
            comboBox.setSelectedItem(dateFormat.format(calendar.
                getTime()));
            hide();
            // hide is called with setSelectedItem() ... removeAll()
            comboBox.requestFocus();
          }          public void mouseEntered(MouseEvent e) {
            label.setOpaque(true);
            label.setBackground(selectedBackground);
            label.setForeground(selectedForeground);
          }          public void mouseExited(MouseEvent e) {
            label.setOpaque(false);
            label.setBackground(background);
            label.setForeground(foreground);
          }
        });        days.add(label);
      }

Answer 3

final JLabel label = new JLabel();
      label.setHorizontalAlignment(JLabel.CENTER);
      label.setForeground(foreground);
      label.setText("Today");
      label.addMouseListener(new MouseListener() {
        public void mousePressed(MouseEvent e) {}        public void mouseClicked(MouseEvent e) {}        public void mouseReleased(MouseEvent e) {
          label.setOpaque(false);
          label.setBackground(background);
          label.setForeground(foreground);
          calendar = Calendar.getInstance();
          comboBox.setSelectedItem(dateFormat.format(calendar.
              getTime()));
          hide();
          // hide is called with setSelectedItem() ... removeAll()
          comboBox.requestFocus();
        }        public void mouseEntered(MouseEvent e) {
          label.setOpaque(true);
          label.setBackground(selectedBackground);
          label.setForeground(selectedForeground);
        }        public void mouseExited(MouseEvent e) {
          label.setOpaque(false);
          label.setBackground(background);
          label.setForeground(foreground);
        }
      });
     // popup.add(BorderLayout.SOUTH, label);      popup.add(BorderLayout.CENTER, days);
      popup.pack();
    }
  }
/**
  //////////////////////////////////////////////////////////////
  // This is only included to provide a sample GUI
  //////////////////////////////////////////////////////////////
  public static void main(String args[]) {
    JFrame f = new JFrame();
    Container c = f.getContentPane();
    c.setLayout(new FlowLayout());
    c.add(new JLabel("Date 1:"));
    c.add(new DateComboBox());
    c.add(new JLabel("Date 2:"));
    DateComboBox dcb = new DateComboBox();
    dcb.setEditable(true);
    c.add(dcb);
    System.out.println(dcb.getDatestr());
    f.addWindowListener(new WindowAdapter() {
      public void windowClosing(WindowEvent e) {
        System.exit(0);
      }
    });
    f.setSize(500, 200);
    f.show();
  }
*/
}