How to write a perpetual calendar in a text box with java
Import? Java . awt . *；
Import? Java . awt . event . *；
Import? Java . util . *；
Import? Java . util . regex . pattern；
Import? javax . swing . *；
Public? Class? Demo28？ Extension? JFrame？ {
int？ m？ =? 1;
String []? Monthly choice? =? {? " 1",? "2",? "3",? "4",? "5",? "6",? "7",? "8",? "9",? " 10",
" 1 1",? " 12"? }; ? //? An array of characters used to store the month.
String []? List names? =? {? Sunday Monday Tuesday Wednesday Thursday Friday Saturday; ? //? An array of characters that stores the week.
Calendar? ca？ =? calendar . getinstance（）；
Container? contentPane？ =? getContentPane（）；
Vector & lt string & gt? Vector? =? New? Vector & lt string & gt ();
String【】【】？ Dating? =? New? string【6】【7】； ? //? Format of table display data
Text field? TF； ? //? The value of the text box indicates the year.
JComboBox？ JB；
JTable？ Table; ? //? Display the date in tabular form.
Public? Void? GetDate (string? Year? String? Month? String? Zhou? int？ Max_Day）？ {
int？ n？ =? 0,? b？ =? 0;
//? Dynamically store the date of next month in the container.
For what? （int？ j？ =? 1; ? j？ & lt=? Max _ Day？ j++）？ {
vector . add（string . value of（j））；
}
//Every time data is added to the table, the original table is put in advance? what's up Data emptying
for（int？ x？ =? 0; X< date. Length; x++）{
for（int？ y？ =? 0; Y< date [x]. Length; y++ ）{
Date [x] [y]? =? null
}
}
//? According to the day of the week on the first day of next month, build a table.
For what? （int？ Answer? =? integer . parse int（week）？ -? 1; ? Answer? & lt？ Date [0]. Length; ? a++）？ {
Date [0] [a]? =? New? String ((string)? vector . to array（）【n】）；
n++；
}
For what? （int？ Me? =? 1; ? Me? & lt？ Date. Length; ? i++）？ {
For what? （int？ j？ =? 0; ? j？ & lt？ Date [I] length; ? j++）？ {
What if? （n？ & lt？ Vector. Size ())? {
Date [I] [J]? =? New? String ((string)? vector . to array（）【n】）；
n++；
}? other
Break;
}
}
//? Clear all data in the container so that new data can be stored next time.
What time? （b？ & lt？ Vector. Size ())? {
vector . remove（b）；
}
}
Public? Void? Select the date (string? God)? {
JLabel？ Label? =? New? JLabel（）；
For what? （int？ y？ =? 0; ? y？ & lt？ Date. Length; ? y++）？ {
For what? （int？ z？ =? 0; ? z？ & lt？ Date [y]. Length; ? z++）？ {
system . out . print（date【y】【z】？ +? "?" );
system . out . println（day）；
What if? (Date [y] [z]? ! =? null）？ {
What if? (date [y] [z]. Equal to (days)? {
table . setselectionbackground（color . yellow）；
Return;
}
}
}
}
}
Public? Void? Draw a picture ()? {
SetTitle ("calendar");
set bounds（200，？ 200,? 350,? 178);
AddWindowListener (new? WindowAdapter（）{
Public? Void? Window closed (WindowEvent? e）？ {
system . exit（0）；
}
});
int？ m？ =? 0;
String? Year? =? String value (ca.get (calendar. Year); ? //? Gets the year of the current system time and stores the value in the variable year.
String? Month? =? String value (ca.get (calendar. Month)? +? 1); ? //? Gets the month of the current system time and stores the value in the variable month.
String? Day? =? String value (ca.get (calendar. Date); ? //? Gets the date of the current system time and stores the value in the variable day.
Calendar. Date? 1); ? //? Put a calendar? The data of the object is set to 1.
String? A week? =? String value (ca.get (calendar. What day is it)); ? //? According to the set calendar object, calculate the day of the week on the first day of this month.
int？ Max_Day？ =? Ca.getActualMaximum (calendar. Date); ? //? Gets the number of days in the current system time month.
GetDate (year, month? Zhou? max _ Day）；
//? Get the same month value as the current system time from the month array.
For what? （int？ Me? =? 0; ? Me? & lt？ month choice . length？ i++）？ {
What if? （month choose【I】。 Equal to (month)? {
m？ =? Me;
}
}
JToolBar？ Toolbar? =? New? JToolBar（）；
JButton？ b 1？ =? New? JButton（“《“）；
B 1.addMouseListener (new? my mouse listener 1（）；
JButton？ b2？ =? New? JButton（“》“）；
B2.addMouseListener (new? my mouse listener 2（））；
JLabel？ j 1？ =? New? JLabel ("Year");
JLabel？ j2？ =? New? JLabel ("month");
tf？ =? New? A text field (5);
Tf.addKeyListener (new? mykey listener（））；
Tf.setText (year);
jb？ =? New? JComboBox（month choice）；
JB . setselectedindex（m）；
Jb.addActionListener (new? myactionlistener 3（））；
Table? =? New? JTable (date, column name);
//table . addmouse listener（new？ table mouse listener（））；
Table. setPreferred ScrallableViewportSize (new? Dimension (350,? 150));
JScrollPane？ jsp？ =? New? JScrollPane (table);
content pane . add（JSP，？ Boundary layout. Center);
Select the date (day);
toolbar . add（b 1）；
toolbar . add（TF）；
toolbar . add（B2）；
toolbar . add（j 1）；
toolbar . add（JB）；
toolbar . add（J2）；
toolbar . set location（0，0);
toolbar . setsize（400，？ 15);
ContentPane.add (toolbar,? Boundary layout. North);
set visible（true）；
New? Thread (new? PaintThread（）。 start（）； ? //? Call the internal class PaintThread and redraw it according to the settings inside.
}