菜鸟求助日历输出问题

2009-12-13 02:19:10 129 阅读 AI 写同款 · GEO 优化AI 选题数据监测一键分发 ›

菜鸟的Springboot学习日历（一）菜鸟的Springboot学习日历关于springboot:springboot: 1、是一个全新的轻量化框架，目的是为了减少配置实现快速开发。 2、Springboot内嵌了一个tomcat，可以直接在tomcat服务器上运行。 3、提供自动配置的“starter”项目对象模型（POMS）以简化Maven配置。例如，添加一个springboot-web的依赖，就会将spring的依赖、spri... 阅读详情

一个输出如下图日历程序：
日一二三四五六
** 1 2 3 4 5 6
7 8 9 10 11 12 13
14 15 16 17 18 19 20
21 22 23 24 25 26 27
28 29 30 31

有办法写的程序时使得它换行后能对齐上面的标题“日一二三四五六”的吗。因为我写的下面数字部分无法和上面对齐，所以想求助下，书上的练习希望大牛求助解决谢谢~

...全文

Wijmo 日历插件说明：　　因为项目（OA）的需要，我负责开发日程的模块，相信大家用过谷歌的日历了吧，是不是觉得挺好用，但又苦于无法实现？　　这里告诉你一个很好的插件，Wijmo，而里面有一个类似谷歌的日历事件插件，真的很好很强大，注意，我不是托。　　当时找到这个插件的时候，真心佩服那些牛逼的外国开发员，能做到这么厉害，并且还开源了。　　因为菜鸟，苦苦做了一个多星期才完成，个中原因能阅读详情

davidcoffee

Java SE 62,620 成员 307,251 内容

+ 关注 + 加入社区

切换为时间正序

jojo9394 2009-12-13

打赏
举报

不要自已加空格格开，使用\t隔开，它会自动右对齐。。。

一头头 2009-12-13

打赏
举报

   /**

     * Returns the button color according to the specified date.

     *

     * @param theDate the date.

     * @return the color.

     */

    private Color getButtonColor(final Calendar theDate) {

        if (equalDates(theDate, this.chosenDate)) {

            return this.chosenDateButtonColor;

        }

        else if (theDate.get(Calendar.MONTH) == this.chosenDate.get(

                Calendar.MONTH)) {

            return this.chosenMonthButtonColor;

        }

        else {

            return this.chosenOtherButtonColor;

        }

    }



    /**

     * Returns true if the two dates are equal (time of day is ignored).

     *

     * @param c1 the first date.

     * @param c2 the second date.

     * @return boolean.

     */

    private boolean equalDates(final Calendar c1, final Calendar c2) {

        if ((c1.get(Calendar.DATE) == c2.get(Calendar.DATE))

            && (c1.get(Calendar.MONTH) == c2.get(Calendar.MONTH))

            && (c1.get(Calendar.YEAR) == c2.get(Calendar.YEAR))) {

            return true;

        }

        else {

            return false;

        }

    }



    /**

     * Returns the first date that is visible in the grid.  This should always 

     * be in the month preceding the month of the selected date.

     *

     * @return the date.

     */

    private Calendar getFirstVisibleDate() {

        final Calendar c = Calendar.getInstance();

        c.set(this.chosenDate.get(Calendar.YEAR), this.chosenDate.get(

                Calendar.MONTH), 1);

        c.add(Calendar.DATE, -1);

        while (c.get(Calendar.DAY_OF_WEEK) != getFirstDayOfWeek()) {

            c.add(Calendar.DATE, -1);

        }

        return c;

    }



    /**

     * Returns the first day of the week (controls the labels in the date 

     * panel).

     *

     * @return the first day of the week.

     */

    private int getFirstDayOfWeek() {

        return this.firstDayOfWeek;

    }



    /**

     * Update the button labels and colors to reflect date selection.

     */

    private void refreshButtons() {

        final Calendar c = getFirstVisibleDate();

        for (int i = 0; i < 42; i++) {

            final JButton b = this.buttons[i];

            b.setText(Integer.toString(c.get(Calendar.DATE)));

            b.setBackground(getButtonColor(c));

            c.add(Calendar.DATE, 1);

        }

    }



    /**

     * Changes the contents of the year selection JComboBox to reflect the 

     * chosen date and the year range.

     */

    private void refreshYearSelector() {

        if (!this.refreshing) {

            this.refreshing = true;

            this.yearSelector.removeAllItems();

            final Integer[] years = getYears(this.chosenDate.get(

                    Calendar.YEAR));

            for (int i = 0; i < years.length; i++) {

                this.yearSelector.addItem(years[i]);

            }

            this.yearSelector.setSelectedItem(new Integer(this.chosenDate.get(

                    Calendar.YEAR)));

            this.refreshing = false;

        }

    }



    /**

     * Returns a vector of years preceding and following the specified year.  

     * The number of years preceding and following is determined by the 

     * yearSelectionRange attribute.

     *

     * @param chosenYear the selected year.

     * @return a vector of years.

     */

    private Integer[] getYears(final int chosenYear) {

        final int size = this.yearSelectionRange * 2 + 1;

        final int start = chosenYear - this.yearSelectionRange;



        final Integer[] years = new Integer[size];

        for (int i = 0; i < size; i++) {

            years[i] = new Integer(i + start);

        }

        return years;

    }



    /**

     * Constructs a panel containing two JComboBoxes (for the month and year) 

     * and a button (to reset the date to TODAY).

     *

     * @return the panel.

     */

    private JPanel constructSelectionPanel() {

        final JPanel p = new JPanel();



        final int minMonth = this.chosenDate.getMinimum(Calendar.MONTH);

        final int maxMonth = this.chosenDate.getMaximum(Calendar.MONTH);

        final String[] months = new String[maxMonth - minMonth + 1];

        for(int i=0;i<months.length;i++){

          months[i] = ""+i;

        } 

        



        this.monthSelector = new JComboBox(months);

        this.monthSelector.addActionListener(this);

        this.monthSelector.setActionCommand("monthSelectionChanged");

        p.add(this.monthSelector);



        this.yearSelector = new JComboBox(getYears(0));

        this.yearSelector.addActionListener(this);

        this.yearSelector.setActionCommand("yearSelectionChanged");

        p.add(this.yearSelector);



        return p;

    }



    /**

     * Returns a panel that appears at the bottom of the calendar panel - 

     * contains a button for selecting today's date.

     *

     * @return the panel.

     */

    private JPanel constructControlPanel() {



        final JPanel p = new JPanel();

        p.setBorder(BorderFactory.createEmptyBorder(2, 5, 2, 5));

        this.todayButton = new JButton("Today");

        this.todayButton.addActionListener(this);

        this.todayButton.setActionCommand("todayButtonClicked");

        p.add(this.todayButton);

        return p;



    }



    /**

     * Returns the color for the currently selected date.

     *

     * @return a color.

     */

    public Color getChosenDateButtonColor() {

        return this.chosenDateButtonColor;

    }



    /**

     * Redefines the color for the currently selected date.

     *

     * @param chosenDateButtonColor the new color

     */

    public void setChosenDateButtonColor(final Color chosenDateButtonColor) {

        if (chosenDateButtonColor == null) {

            throw new NullPointerException("UIColor must not be null.");

        }

        final Color oldValue = this.chosenDateButtonColor;

        this.chosenDateButtonColor = chosenDateButtonColor;

        refreshButtons();

        firePropertyChange("chosenDateButtonColor", oldValue, 

                chosenDateButtonColor);

    }



    /**

     * Returns the color for the buttons representing the current month.

     *

     * @return the color for the current month.

     */

    public Color getChosenMonthButtonColor() {

        return this.chosenMonthButtonColor;

    }



    /**

     * Defines the color for the buttons representing the current month.

     *

     * @param chosenMonthButtonColor the color for the current month.

     */

    public void setChosenMonthButtonColor(final Color chosenMonthButtonColor) {

        if (chosenMonthButtonColor == null) {

            throw new NullPointerException("UIColor must not be null.");

        }

        final Color oldValue = this.chosenMonthButtonColor;

        this.chosenMonthButtonColor = chosenMonthButtonColor;

        refreshButtons();

        firePropertyChange("chosenMonthButtonColor", oldValue, 

                chosenMonthButtonColor);

    }



    /**

     * Returns the color for the buttons representing the other months.

     *

     * @return a color.

     */

    public Color getChosenOtherButtonColor() {

        return this.chosenOtherButtonColor;

    }



    /**

     * Redefines the color for the buttons representing the other months.

     *

     * @param chosenOtherButtonColor a color.

     */

    public void setChosenOtherButtonColor(final Color chosenOtherButtonColor) {

        if (chosenOtherButtonColor == null) {

            throw new NullPointerException("UIColor must not be null.");

        }

        final Color oldValue = this.chosenOtherButtonColor;

        this.chosenOtherButtonColor = chosenOtherButtonColor;

        refreshButtons();

        firePropertyChange("chosenOtherButtonColor", oldValue, 

                chosenOtherButtonColor);

    }



    /**

     * Returns the range of years available for selection (defaults to 20).

     * 

     * @return The range.

     */

    public int getYearSelectionRange() {

        return this.yearSelectionRange;

    }



    /**

     * Sets the range of years available for selection.

     * 

     * @param yearSelectionRange  the range.

     */

    public void setYearSelectionRange(final int yearSelectionRange) {

        final int oldYearSelectionRange = this.yearSelectionRange;

        this.yearSelectionRange = yearSelectionRange;

        refreshYearSelector();

        firePropertyChange("yearSelectionRange", oldYearSelectionRange, 

                yearSelectionRange);

    }

}

一头头 2009-12-13

打赏
举报

/* 

 * JCommon : a free general purpose class library for the Java(tm) platform

 * 

 *

 * (C) Copyright 2000-2005, by Object Refinery Limited and Contributors.

 * 

 * Project Info:  http://www.jfree.org/jcommon/index.html

 *

 * This library is free software; you can redistribute it and/or modify it 

 * under the terms of the GNU Lesser General Public License as published by 

 * the Free Software Foundation; either version 2.1 of the License, or 

 * (at your option) any later version.

 *

 * This library is distributed in the hope that it will be useful, but 

 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 

 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public 

 * License for more details.

 *

 * You should have received a copy of the GNU Lesser General Public

 * License along with this library; if not, write to the Free Software

 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, 

 * USA.  

 *

 * [Java is a trademark or registered trademark of Sun Microsystems, Inc. 

 * in the United States and other countries.]

 * 

 * ---------------------

 * DateChooserPanel.java

 * ---------------------

 * (C) Copyright 2000-2004, by Object Refinery Limited.

 *

 * Original Author:  David Gilbert (for Object Refinery Limited);

 * Contributor(s):   -;

 *

 * $Id: DateChooserPanel.java,v 1.11 2007/11/02 17:50:36 taqua Exp $

 *

 * Changes (from 26-Oct-2001)

 * --------------------------

 * 26-Oct-2001 : Changed package to com.jrefinery.ui.* (DG);

 * 08-Dec-2001 : Dropped the getMonths() method (DG);

 * 13-Oct-2002 : Fixed errors reported by Checkstyle (DG);

 * 02-Nov-2005 : Fixed a bug where the current day-of-the-month is past

 *               the end of the newly selected month when the month or year

 *               combo boxes are changed - see bug id 1344319 (DG);

 *

 */





import java.awt.BorderLayout;

import java.awt.Color;

import java.awt.Font;

import java.awt.GridLayout;

import java.awt.Insets;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import java.text.DateFormatSymbols;

import java.util.Calendar;

import java.util.Date;

import javax.swing.BorderFactory;

import javax.swing.JButton;

import javax.swing.JComboBox;

import javax.swing.JLabel;

import javax.swing.JPanel;

import javax.swing.SwingConstants;

import javax.swing.UIManager;



/**

 * A panel that allows the user to select a date.

 *

 * @author David Gilbert

 */

public class DateChooserPanel extends JPanel implements ActionListener {



    /**

     * The date selected in the panel.

     */

    private Calendar chosenDate;



    /**

     * The color for the selected date.

     */

    private Color chosenDateButtonColor;



    /**

     * The color for dates in the current month.

     */

    private Color chosenMonthButtonColor;



    /**

     * The color for dates that are visible, but not in the current month.

     */

    private Color chosenOtherButtonColor;



    /**

     * The first day-of-the-week.

     */

    private int firstDayOfWeek;



    /**

     * The range used for selecting years.

     */

    private int yearSelectionRange = 20;



    /**

     * The font used to display the date.

     */

    private Font dateFont = new Font("SansSerif", Font.PLAIN, 10);



    /**

     * A combo for selecting the month.

     */

    private JComboBox monthSelector;



    /**

     * A combo for selecting the year.

     */

    private JComboBox yearSelector;



    /**

     * A button for selecting today's date.

     */

    private JButton todayButton;



    /**

     * An array of buttons used to display the days-of-the-month.

     */

    private JButton[] buttons;



    /**

     * A flag that indicates whether or not we are currently refreshing the 

     * buttons.

     */

    private boolean refreshing = false;



    /**

     * The ordered set of all seven days of a week,

     * beginning with the 'firstDayOfWeek'.

     */

    private int[] WEEK_DAYS;



    /**

     * Constructs a new date chooser panel, using today's date as the initial 

     * selection.

     */

    public DateChooserPanel() {

        this(Calendar.getInstance(), false);

    }



    /**

     * Constructs a new date chooser panel.

     *

     * @param calendar     the calendar controlling the date.

     * @param controlPanel a flag that indicates whether or not the 'today' 

     *                     button should appear on the panel.

     */

    public DateChooserPanel(final Calendar calendar, 

                            final boolean controlPanel) {



        super(new BorderLayout());



        this.chosenDateButtonColor = UIManager.getColor("textHighlight");

        this.chosenMonthButtonColor = UIManager.getColor("control");

        this.chosenOtherButtonColor = UIManager.getColor("controlShadow");



        // the default date is today...

        this.chosenDate = calendar;

        this.firstDayOfWeek = calendar.getFirstDayOfWeek();

        this.WEEK_DAYS = new int[7];

        for (int i = 0; i < 7; i++) {

            this.WEEK_DAYS[i] = ((this.firstDayOfWeek + i - 1) % 7) + 1;

        }



        add(constructSelectionPanel(), BorderLayout.NORTH);

        add(getCalendarPanel(), BorderLayout.CENTER);

        if (controlPanel) {

            add(constructControlPanel(), BorderLayout.SOUTH);

        }

        setDate(calendar.getTime());

    }



    /**

     * Sets the date chosen in the panel.

     *

     * @param theDate the new date.

     */

    public void setDate(final Date theDate) {



        this.chosenDate.setTime(theDate);

        this.monthSelector.setSelectedIndex(this.chosenDate.get(

                Calendar.MONTH));

        refreshYearSelector();

        refreshButtons();



    }



    /**

     * Returns the date selected in the panel.

     *

     * @return the selected date.

     */

    public Date getDate() {

        return this.chosenDate.getTime();

    }



    /**

     * Handles action-events from the date panel.

     *

     * @param e information about the event that occurred.

     */

    public void actionPerformed(final ActionEvent e) {



        if (e.getActionCommand().equals("monthSelectionChanged")) {

            final JComboBox c = (JComboBox) e.getSource();

            

            // In most cases, changing the month will not change the selected

            // day.  But if the selected day is 29, 30 or 31 and the newly

            // selected month doesn't have that many days, we revert to the 

            // last day of the newly selected month...

            int dayOfMonth = this.chosenDate.get(Calendar.DAY_OF_MONTH);

            this.chosenDate.set(Calendar.DAY_OF_MONTH, 1);

            this.chosenDate.set(Calendar.MONTH, c.getSelectedIndex());

            int maxDayOfMonth = this.chosenDate.getActualMaximum(

                    Calendar.DAY_OF_MONTH);

            this.chosenDate.set(Calendar.DAY_OF_MONTH, Math.min(dayOfMonth, 

                    maxDayOfMonth));

            refreshButtons();

        }

        else if (e.getActionCommand().equals("yearSelectionChanged")) {

            if (!this.refreshing) {

                final JComboBox c = (JComboBox) e.getSource();

                final Integer y = (Integer) c.getSelectedItem();

                

                // in most cases, changing the year will not change the 

                // selected day.  But if the selected day is Feb 29, and the

                // newly selected year is not a leap year, we revert to 

                // Feb 28...

                int dayOfMonth = this.chosenDate.get(Calendar.DAY_OF_MONTH);

                this.chosenDate.set(Calendar.DAY_OF_MONTH, 1);

                this.chosenDate.set(Calendar.YEAR, y.intValue());

                int maxDayOfMonth = this.chosenDate.getActualMaximum(

                    Calendar.DAY_OF_MONTH);

                this.chosenDate.set(Calendar.DAY_OF_MONTH, Math.min(dayOfMonth, 

                    maxDayOfMonth));

                refreshYearSelector();

                refreshButtons();

            }

        }

        else if (e.getActionCommand().equals("todayButtonClicked")) {

            setDate(new Date());

        }

        else if (e.getActionCommand().equals("dateButtonClicked")) {

            final JButton b = (JButton) e.getSource();

            final int i = Integer.parseInt(b.getName());

            final Calendar cal = getFirstVisibleDate();

            cal.add(Calendar.DATE, i);

            setDate(cal.getTime());

        }

    }



    /**

     * Returns a panel of buttons, each button representing a day in the month.

     * This is a sub-component of the DatePanel.

     *

     * @return the panel.

     */

    private JPanel getCalendarPanel() {



        final JPanel p = new JPanel(new GridLayout(7, 7));

        final DateFormatSymbols dateFormatSymbols = new DateFormatSymbols();

        final String[] weekDays = dateFormatSymbols.getShortWeekdays();



        for (int i = 0; i < this.WEEK_DAYS.length; i++) {

            p.add(new JLabel(weekDays[this.WEEK_DAYS[i]], 

                    SwingConstants.CENTER));

        }



        this.buttons = new JButton[42];

        for (int i = 0; i < 42; i++) {

            final JButton b = new JButton("");

            b.setMargin(new Insets(1, 1, 1, 1));

            b.setName(Integer.toString(i));

            b.setFont(this.dateFont);

            b.setFocusPainted(false);

            b.setActionCommand("dateButtonClicked");

            b.addActionListener(this);

            this.buttons[i] = b;

            p.add(b);

        }

        return p;



    }

一头头 2009-12-13

打赏
举报

package test;

import java.awt.Color;

import java.awt.Dimension;

import java.awt.Graphics;

import java.awt.Graphics2D;

import java.awt.RenderingHints;

import java.text.SimpleDateFormat;

import java.util.Calendar;

import java.util.Date;



import javax.swing.JFrame;

import javax.swing.JPanel;



public class Main extends JPanel {

  SimpleDateFormat month = new SimpleDateFormat("MMMM");

  SimpleDateFormat year = new SimpleDateFormat("yyyy");

  SimpleDateFormat day = new SimpleDateFormat("d");

  Date date = new Date();



  public void setDate(Date date) {

    this.date = date;

  }

  public void paintComponent(Graphics g) {

    ((Graphics2D) g).setRenderingHint(RenderingHints.KEY_ANTIALIASING,RenderingHints.VALUE_ANTIALIAS_ON);

    g.fillRect(0, 0, getWidth(), getHeight());

    g.setColor(Color.black);

    g.drawString(month.format(date), 34, 36);

    g.setColor(Color.white);

    g.drawString(year.format(date), 235, 36);



    Calendar today = Calendar.getInstance();

    today.setTime(date);

    Calendar cal = Calendar.getInstance();

    cal.setTime(date);

    cal.set(Calendar.DATE, 1);

    cal.add(Calendar.DATE, -cal.get(Calendar.DAY_OF_WEEK) + 1);

    for (int week = 0; week < 6; week++) {

      for (int d = 0; d < 7; d++) {

        Color col = Color.black;

          g.drawString(day.format(cal.getTime()), d * 30 + 46 + 4,

              week * 29 + 81 + 20);

        cal.add(Calendar.DATE, +1);

      }

    }

  }



  public static void main(String[] args) {

    JFrame frame = new JFrame();

    frame.setPreferredSize(new Dimension(300, 280));



    Main ch = new Main();

    ch.setDate(new Date());

    frame.getContentPane().add(ch);

    frame.setUndecorated(true);



    frame.pack();

    frame.setVisible(true);

  }

}

菜鸟求助日历输出问题

相关推荐