java jbuilder日历小代码

package cjydemorili; import java.awt.*; import java.awt.event.*; import java.util.*; import javax.swing.*; import javax.swing.event.*; import javax.swing.table.*; public class MyCalendar extends JApplet { public static final String WEEK_SUN = "SUN"; public static final String WEEK_MON = "MON"; public static final String WEEK_TUE = "TUE"; public static final String WEEK_WED = "WED"; public static final String WEEK_THU = "THU"; public static final String WEEK_FRI = "FRI"; public static final String WEEK_SAT = "SAT"; public static final Color background = Color.white; public static final Color foreground = Color.black; public static final Color headerBackground = Color.blue; public static final Color headerForeground = Color.white; public static final Color selectedBackground = Color.blue; public static final Color selectedForeground = Color.white; private JPanel cPanel; private JLabel yearsLabel; private JSpinner yearsSpinner; private JLabel monthsLabel; private JComboBox monthsComboBox; private JTable daysTable; private AbstractTableModel daysModel; private Calendar calendar; public MyCalendar() { cPanel = (JPanel) getContentPane(); } public void init() { cPanel.setLayout(new BorderLayout()); calendar = Calendar.getInstance(); calendar = Calendar.getInstance(); yearsLabel = new JLabel("Year: "); yearsSpinner = new JSpinner(); yearsSpinner.setEditor(new JSpinner.NumberEditor(yearsSpinner, "0000")); yearsSpinner.setValue(new Integer(calendar.get(Calendar.YEAR))); yearsSpinner.addChangeListener(new ChangeListener() { public void stateChanged(ChangeEvent changeEvent) { int day = calendar.get(Calendar.DAY_OF_MONTH); calendar.set(Calendar.DAY_OF_MONTH, 1); calendar.set(Calendar.YEAR, ((Integer) yearsSpinner.getValue()).intValue()); int maxDay = calendar.getActualMaximum(Calendar.DAY_OF_MONTH); calendar.set(Calendar.DAY_OF_MONTH, day > maxDay ? maxDay : day); updateView(); } }); JPanel yearMonthPanel = new JPanel(); cPanel.add(yearMonthPanel, BorderLayout.NORTH); yearMonthPanel.setLayout(new BorderLayout()); yearMonthPanel.add(new JPanel(), BorderLayout.CENTER); JPanel yearPanel = new JPanel(); yearMonthPanel.add(yearPanel, BorderLayout.WEST); yearPanel.setLayout(new BorderLayout()); yearPanel.add(yearsLabel, BorderLayout.WEST); yearPanel.add(yearsSpinner, BorderLayout.CENTER); monthsLabel = new JLabel("Month: "); monthsComboBox = new JComboBox(); for (int i = 1; i <= 12; i++) { monthsComboBox.addItem(new Integer(i)); } monthsComboBox.setSelectedIndex(calendar.get(Calendar.MONTH)); monthsComboBox.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent actionEvent) { int day = calendar.get(Calendar.DAY_OF_MONTH); calendar.set(Calendar.DAY_OF_MONTH, 1); calendar.set(Calendar.MONTH, monthsComboBox.getSelectedIndex()); int maxDay = calendar.getActualMaximum(Calendar.DAY_OF_MONTH); calendar.set(Calendar.DAY_OF_MONTH, day > maxDay ? maxDay : day); updateView(); } }); JPanel monthPanel = new JPanel(); yearMonthPanel.add(monthPanel, BorderLayout.EAST); monthPanel.setLayout(new BorderLayout()); monthPanel.add(monthsLabel, BorderLayout.WEST); monthPanel.add(monthsComboBox, BorderLayout.CENTER); daysModel = new AbstractTableModel() { public int getRowCount() { return 7; } public int getColumnCount() { return 7; } public Object getValueAt(int row, int column) { if (row == 0) { return getHeader(column); } row--; Calendar calendar = (Calendar) MyCalendar.this.calendar.clone(); calendar.set(Calendar.DAY_OF_MONTH, 1); int dayCount = calendar.getActualMaximum(Calendar.DAY_OF_MONTH); int moreDayCount = calendar.get(Calendar.DAY_OF_WEEK) - 1; int index = row * 7 + column; int dayIndex = index - moreDayCount + 1; if (index < moreDayCount || dayIndex > dayCount) { return null; } else { return new Integer(dayIndex); } } }; daysTable = new CalendarTable(daysModel, calendar); daysTable.setCellSelectionEnabled(true); daysTable.setSelectionMode(ListSelectionModel.SINGLE_SELECTION); daysTable.setDefaultRenderer(daysTable.getColumnClass(0), new TableCellRenderer() { public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected, boolean hasFocus, int row, int column) { String text = (value == null) ? "" : value.toString(); JLabel cell = new JLabel(text); cell.setOpaque(true); if (row == 0) { cell.setForeground(headerForeground); cell.setBackground(headerBackground); } else { if (isSelected) { cell.setForeground(selectedForeground); cell.setBackground(selectedBackground); } else { cell.setForeground(foreground); cell.setBackground(background); } } return cell; } }); updateView(); cPanel.add(daysTable, BorderLayout.CENTER); } public static String getHeader(int index) { switch (index) { case 0: return WEEK_SUN; case 1: return WEEK_MON; case 2: return WEEK_TUE; case 3: return WEEK_WED; case 4: return WEEK_THU; case 5: return WEEK_FRI; case 6: return WEEK_SAT; default: return null; } } public void updateView() { daysModel.fireTableDataChanged(); daysTable.setRowSelectionInterval(calendar.get(Calendar.WEEK_OF_MONTH), calendar.get(Calendar.WEEK_OF_MONTH)); daysTable.setColumnSelectionInterval(calendar.get(Calendar.DAY_OF_WEEK) - 1, calendar.get(Calendar.DAY_OF_WEEK) - 1); } public static class CalendarTable extends JTable { private Calendar calendar; public CalendarTable(TableModel model, Calendar calendar) { super(model); this.calendar = calendar; } public void changeSelection(int row, int column, boolean toggle, boolean extend) { super.changeSelection(row, column, toggle, extend); if (row == 0) { return; } Object obj = getValueAt(row, column); if (obj != null) { calendar.set(Calendar.DAY_OF_MONTH, ((Integer)obj).intValue()); } } } public static void main(String[] args) { JFrame frame = new JFrame("MyCalendar Application"); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); M