效果图如下：
1 import java.awt.*; 2 import java.awt.event.*; 3 import java.util.*; 4 5 import javax.swing.*; 6 import javax.swing.event.*; 7 import javax.swing.table.*; 8 9 public class MyCalendar extends JApplet 10 { 11 //定义星期天到星期六 12 public static final String WEEK_SUN = "周日"; 13 public static final String WEEK_MON = "周一"; 14 public static final String WEEK_TUE = "周二"; 15 public static final String WEEK_WED = "周三"; 16 public static final String WEEK_THU = "周四"; 17 public static final String WEEK_FRI = "周五"; 18 public static final String WEEK_SAT = "周六"; 19 //设置背景颜色 20 public static final Color background = Color.white; 21 //设置前景颜色 22 public static final Color foreground = Color.black; 23 //设置题头星期的背景颜色和前景颜色 24 public static final Color headerBackground = Color.blue; 25 public static final Color headerForeground = Color.white; 26 //设置被选中的日期的背景颜色和前景颜色 27 public static final Color selectedBackground = Color.red; 28 public static final Color selectedForeground = Color.white; 29 30 private JPanel cPane; 31 private JLabel yearsLabel;//年 32 private JSpinner yearsSpinner;//年调控 33 private JLabel monthsLabel;//月 34 private JComboBox monthsComboBox;//月下拉框 35 private JTable daysTable;//用来显示日期的table 36 private AbstractTableModel daysModel; 37 private Calendar calendar; 38 //构造方法初始化panel 39 40 public MyCalendar() 41 { 42 cPane = (JPanel) getContentPane(); 43 } 44 //初始化，对所有的空间进行布局 45 public void init() 46 { 47 48 cPane.setLayout(new BorderLayout()); //使用Border布局管理器 49 calendar = Calendar.getInstance(); //获取当前时间 50 calendar = Calendar.getInstance(); 51 yearsLabel = new JLabel("Year: "); 52 yearsSpinner = new JSpinner(); 53 yearsSpinner.setEditor(new JSpinner.NumberEditor(yearsSpinner,"0000")); 54 yearsSpinner.setValue(new Integer(calendar.get(Calendar.YEAR))); 55 //增加监听 监听年份的改变 56 yearsSpinner.addChangeListener(new ChangeListener() 57 { 58 public void stateChanged(ChangeEvent changeEvent) 59 { 60 int day = calendar.get(Calendar.DAY_OF_MONTH); 61 calendar.set(Calendar.DAY_OF_MONTH, 1); 62 calendar.set(Calendar.YEAR,((Integer)yearsSpinner.getValue()).intValue()); 63 int maxDay = calendar.getActualMaximum(Calendar.DAY_OF_MONTH); 64 calendar.set(Calendar.DAY_OF_MONTH, day>maxDay?maxDay:day); 65 updateView(); 66 } 67 }); 68 69 JPanel yearMonthPanel = new JPanel(); 70 cPane.add(yearMonthPanel,BorderLayout.NORTH); 71 yearMonthPanel.setLayout(new BorderLayout()); 72 yearMonthPanel.add(new JPanel(),BorderLayout.CENTER); 73 JPanel yearPanel = new JPanel(); 74 yearMonthPanel.add(yearPanel,BorderLayout.WEST); 75 yearPanel.setLayout(new BorderLayout()); 76 yearPanel.add(yearsLabel,BorderLayout.WEST); 77 yearPanel.add(yearsSpinner,BorderLayout.CENTER); 78 79 monthsLabel = new JLabel("Month: "); 80 //向月份下拉框中增加内容 81 monthsComboBox = new JComboBox(); 82 for(int i=1; i<=12; i++) 83 { 84 monthsComboBox.addItem(new Integer(i)); 85 } 86 monthsComboBox.setSelectedIndex(calendar.get(Calendar.MONTH)); 87 //监听月份的改变 88 monthsComboBox.addActionListener(new ActionListener() { 89 90 @Override 91 public void actionPerformed(ActionEvent actionEvevt) { 92 // TODO Auto-generated method stub 93 int day = calendar.get(Calendar.DAY_OF_MONTH); 94 calendar.set(Calendar.DAY_OF_MONTH,1); 95 calendar.set(Calendar.MONTH,monthsComboBox.getSelectedIndex()); 96 int maxDay = calendar.getActualMaximum(Calendar.DAY_OF_MONTH); 97 calendar.set(Calendar.DAY_OF_MONTH,day>maxDay?maxDay:day); 98 updateView(); 99 } 100 }); 101 102 103 JPanel monthPanel = new JPanel(); 104 yearMonthPanel.add(monthPanel,BorderLayout.EAST); 105 monthPanel.setLayout(new BorderLayout()); 106 monthPanel.add(monthsLabel,BorderLayout.WEST); 107 monthPanel.add(monthsComboBox,BorderLayout.CENTER); 108 109 daysModel = new AbstractTableModel() { 110 111 @Override 112 public Object getValueAt(int row, int column) { 113 // TODO Auto-generated method stub 114 if(row==0) 115 { 116 return getHeader(column); 117 } 118 row--; 119 Calendar calendar = (Calendar)MyCalendar.this.calendar.clone(); 120 calendar.set(Calendar.DAY_OF_MONTH,1); 121 int dayCount = calendar.getActualMaximum(Calendar.DAY_OF_MONTH); 122 int moreDayCount = calendar.get(Calendar.DAY_OF_WEEK)-1; //每个月第一天从哪一列开始 123 int index = row*7 + column; 124 int dayIndex = index - moreDayCount + 1; 125 if(index<moreDayCount||dayIndex>dayCount) 126 { 127 return null; 128 } 129 else 130 { 131 return new Integer(dayIndex); 132 } 133 } 134 //设置行7 135 @Override 136 public int getRowCount() { 137 // TODO Auto-generated method stub 138 return 7; 139 } 140 //设置列7 141 @Override 142 public int getColumnCount() { 143 // TODO Auto-generated method stub 144 return 7; 145 } 146 }; 147 daysTable = new CalendarTable(daysModel,calendar); 148 //设置每个cell可以被选中 149 daysTable.setCellSelectionEnabled(true); 150 daysTable.setSelectionMode(ListSelectionModel.SINGLE_SELECTION); 151 daysTable.setDefaultRenderer(daysTable.getColumnClass(0),new TableCellRenderer() { 152 @Override 153 public Component getTableCellRendererComponent(JTable table,Object value, 154 boolean isSelected,boolean hasFocus,int row,int column) { 155 String text = (value == null )? "" : value.toString(); 156 JLabel cell = new JLabel(text); 157 cell.setOpaque(true); 158 if(row == 0) 159 { 160 cell.setForeground(headerForeground); 161 cell.setBackground(headerBackground); 162 } 163 else 164 { 165 if(isSelected) 166 { 167 cell.setForeground(selectedForeground); 168 cell.setBackground(selectedBackground); 169 } 170 else 171 { 172 cell.setForeground(foreground); 173 cell.setBackground(background); 174 } 175 } 176 return cell; 177 } 178 }); 179 updateView(); 180 cPane.add(daysTable,BorderLayout.CENTER); 181 } 182 183 public static String getHeader(int index) 184 { 185 switch(index) 186 { 187 case 0: 188 return WEEK_SUN; 189 case 1: 190 return WEEK_MON; 191 case 2: 192 return WEEK_TUE; 193 case 3: 194 return WEEK_WED; 195 case 4: 196 return WEEK_THU; 197 case 5: 198 return WEEK_FRI; 199 case 6: 200 return WEEK_SAT; 201 default: 202 return null; 203 } 204 } 205 206 public void updateView() 207 { 208 daysModel.fireTableDataChanged(); 209 daysTable.setRowSelectionInterval(calendar.get(Calendar.WEEK_OF_MONTH), 210 calendar.get(Calendar.WEEK_OF_MONTH)); 211 daysTable.setColumnSelectionInterval(calendar.get(Calendar.DAY_OF_WEEK)-1, 212 calendar.get(Calendar.DAY_OF_WEEK)-1); 213 } 214 //设置日历的table 215 public static class CalendarTable extends JTable 216 { 217 private Calendar calendar; 218 public CalendarTable(TableModel model,Calendar calendar) 219 { 220 super(model); 221 this.calendar = calendar; 222 } 223 public void changeSelection(int row,int column,boolean toggle,boolean extend) 224 { 225 super.changeSelection(row, column, toggle, extend); 226 if(row == 0) 227 { 228 return; 229 } 230 Object obj = getValueAt(row,column); 231 if(obj != null) 232 { 233 calendar.set(Calendar.DAY_OF_MONTH,((Integer)obj).intValue()); 234 } 235 } 236 } 237 //让applet作为一个可执行的程序来运行 238 public static void main(String[] args) 239 { 240 JFrame frame = new JFrame("ShuBing日历"); 241 frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); 242 MyCalendar myCalendar = new MyCalendar(); 243 myCalendar.init(); 244 frame.getContentPane().add(myCalendar); 245 frame.setSize(300,200); 246 frame.setVisible(true); 247 } 248 }