Compile several self-written small codes (JSP calendar and jframe calculator)

Calendar:

<% @ Page contenttype = "text/html; charset = GBK" %>
<% @ Page import = "Java. util. Calendar" %>
<% // @ Page errorpage = "handleerrorpage. jsp" %>

<Div align = center style = "position: absolute; top: 12%; width = 100%">
<%
Boolean requested = false;
Calendar CLD = calendar. getinstance ();
If (request. getparameter ("year ")! = NULL ){
ClD. Set (CLD. Year, integer. parseint (request. getparameter ("year ")));
Requested = true;
// Out. println ("year:" + ClD. Get (CLD. Year ));
}
If (request. getparameter ("month ")! = NULL ){
ClD. Set (CLD. Month, integer. parseint (request. getparameter ("month")-1 );
Requested = true;
// Out. println ("month:" + (CLD. Get (CLD. month) + 1 ));
}

Out. println (CLD. Get (CLD. Year) + "year" + (CLD. Get (CLD. month) + 1) + "month ");
// Out. println (CLD. gettime ());
// Convert the calendar to the first day of the current month.
ClD. Add (CLD. Date, 1-cld.get (CLD. Date ));
// Obtain the number of weeks of the day
Int weekoffirstday = ClD. Get (CLD. day_of_week );
%>

<Table border = 1>
& Lt; tr bgcolor = "227799" & gt;
<TD> day </TD>
<TD> 1 </TD>
<TD> 2 </TD>
<TD> 3 </TD>
<TD> 4 </TD>
<TD> 5 </TD>
<TD> 6 </TD>
</Tr>
<Tr>
<%
// The number of blank cells in front of the calendar is exactly the number of weeks on the first day of the month
For (INT I = 0; I <weekOfFirstDay-1; I ++ ){
Out. println ("<TD> </TD> ");
}

// The cycle length is the maximum number of days in the month
For (INT I = 0; I <ClD. getactualmaximum (CLD. Date); I ++ ){

// Add "<tr>" before Sunday"
If (weekoffirstday + i-1) % 7) = 0 ){
Out. println ("<tr> ");
}
// I + 1 is the number of days
Out. println ("<TD>" + (I + 1) + "</TD> ");

// Add "</tr>" to the end on Saturday. You can skip this step based on the HTML language. </tr>
// If (weekoffirstday + I) % 7) = 0 ){
// Out. println ("</tr> ");
//}
}
%>
</Table>
<Form>
<Select name = "year">
<%
For (INT I = 0; I <80; I ++ ){
Out. println ("<option ");
If (requested & (1949 + I) = integer. parseint (request. getparameter ("year "))){
Out. println ("selected ");
}
Out. println (">" + (1949 + I ));
}
%>
</SELECT>
<Select name = "month">
<%
For (INT I = 0; I <12; I ++ ){
Out. println ("<option ");
If (requested & I + 1 = integer. parseint (request. getparameter ("month "))){
Out. println ("selected ");
}
Out. println (">" + (New INTEGER (I + 1). tostring (). touppercase (); // The English case-insensitive conversion number is invalid.
}
%>
</SELECT>
<Input type = "Submit" value = "Submit">
</Form>
</Div>

Full array Arrangement

Public class test {
Public static void main (string [] ARGs ){
Int A [] = {2, 5, 6, 7 };
For (INT I = 0; I <4; I ++ ){
For (Int J = 0; j <4; j ++ ){
If (j = I) continue;
For (int K = 0; k <4; k ++ ){
If (k = I | K = J) continue;
System. Out. Print (A [I] * 1000 + A [J] * 100 + A [k] * 10 + A [6-i-j-k]);
System. Out. Print ("");
}
}
System. Out. println ();
}
}
}

 

Calculator

Import java. AWT .*;
Import java. AWT. event .*;
Import javax. Swing .*;

Public class mycalc
{
String result = new string ();
Stringbuffer numappend = new stringbuffer ();
String operator = new string ();

Jframe F = NULL;
Jmenubar MB = NULL;

Jmenu M1 = new jmenu ("Edit (E )");
Jmenu m2 = new jmenu ("View (v )");
Jmenu m3 = new jmenu ("Help (h )");

Jmenuitem mi11 = new jmenuitem ("Copy (c) Ctrl + C ");
Jmenuitem mi12 = new jmenuitem ("paste (p) Ctrl + V ");
Jcheckboxmenuitem mi21 = new jcheckboxmenuitem ("standard type (t )");
Jcheckboxmenuitem mi22 = new jcheckboxmenuitem ("science type (s )");
Jcheckboxmenuitem mi23 = new jcheckboxmenuitem ("digital grouping (I )");
Jmenuitem mi31 = new jmenuitem ("help topic (h )");
Jmenuitem mi32 = new jmenuitem ("about calculator ()");

Jtextfield TF = new jtextfield (32 );

Public mycalc (string S, int X, int y, int W, int h ){

F = new jframe (s );
MB = new jmenubar ();
F. setjmenubar (MB );

MB. Add (M1 );
MB. Add (m2 );
MB. Add (m3 );

M1.add (mi11 );
M1.add (mi12 );
M2.add (mi21 );
M2.add (mi22 );
M2.addseparator ();
M2.add (mi23 );
M3.add (mi31 );
M3.addseparator ();
M3.add (mi32 );

Jpanel pp = new jpanel ();
Pp. setlayout (New borderlayout (5, 5 ));

Jpanel pfortextf = new jpanel (New flowlayout (flowlayout. Left ));
Pfortextf. Add (TF );
F. Add (PP );

Jpanel P = new jpanel ();

Jpanel p1 = new jpanel ();
Jpanel P2 = new jpanel ();
Jpanel P3 = new jpanel ();
Jpanel P4 = new jpanel ();

// Rectangle rect = P. getbounds ();
// Int width = (double) rect. getwidth (). intvalue ();
// Int Height = (double) rect. getheight (). intvalue ();
// System. Out. println (width + "" + height );

Int width = W * 11/12;
Int Height = (h-12) * 4/6;
P1.setbounds (0, 0, width/7, height/6 );
P2.setbounds (width/7 + 10, 0, width * 6/7-8, height/6 );
P3.setbounds (0, height/6 + 10, width/7, height * 5/6-8 );
P4.setbounds (width/7 + 10, height/6 + 10, width * 6/7-8, height * 5/6-8 );

// P1.setbackground (color. Blue );
// P2.setbackground (color. Green );
// P3.setbackground (color. Yellow );
// P4.setbackground (color. Magenta );
 
Jtextfield TF1 = new jtextfield (3 );
Tf1.seteditable (false );
P1.add (TF1 );

Jbutton B21 = new jbutton ("backspace ");
Jbutton B22 = new jbutton ("CE ");
Jbutton B23 = new jbutton ("C ");
B21.setforeground (color. Red );
B22.setforeground (color. Red );
B23.setforeground (color. Red );

P2.setlayout (New gridlayout (1, 3, 3 ));
P2.add (B21 );
P2.add (B22 );
P2.add (B23 );

Jbutton b31 = new jbutton ("MC ");
Jbutton B32 = new jbutton ("Mr ");
Jbutton B33 = new jbutton ("Ms ");
Jbutton b34 = new jbutton ("m + ");
B31.setforeground (color. Red );
B32.setforeground (color. Red );
B33.setforeground (color. Red );
B34.setforeground (color. Red );

B31.setsize (5, 5 );
P3.setlayout (New gridlayout (4,1, 3,3 ));
P3.add (b31 );
P3.add (B32 );
P3.add (B33 );
P3.add (b34 );

 

String [] Sarr =
{"7", "8", "9", "/", "SQRT", "4", "5", "6", "*", "%"
, "1", "2", "3", "-", "1/X", "0", "+ /-",". "," + "," = "};
Jbutton [] buttons = new jbutton [Sarr. Length];
P4.setlayout (New gridlayout (4,5, 3,3 ));
For (INT I = 0; I <Sarr. length; I ++ ){
Buttons [I] = new jbutton (Sarr [I]);

If (Sarr [I] = "+" | Sarr [I] = "-" | Sarr [I] = "*" | Sarr [I] = = "/" | Sarr [I] = "= ")
{
Buttons [I]. addactionlistener (New operatorlistenter ());
Buttons [I]. setforeground (color. Red );
} Else {
Buttons [I]. setforeground (color. Blue );
}

// If (Sarr [I]. compareto ("9")> 0 | Sarr [I]. compareto ("0") <0)
//{
// Buttons [I]. setforeground (color. Red );
//}

// If (I % 5 = 3 ){
// Buttons [I]. setforeground (color. Red );
//}
P4.add (buttons [I]);
}

P. setlayout (null );
P. Add (P1 );
P. Add (P2 );
P. Add (P3 );
P. Add (P4 );

Pp. Add (p, borderlayout. center );
F. setlayout (null );
Pp. setbounds (10, 3, w-8, h-8 );
F. Add (PP );

Pp. Add (pfortextf, borderlayout. North );
F. setbounds (X, Y, W, H );
F. setbackground (new color (212,208,200 ));
// F. setresizable (false );
F. setvisible (true );
// F. addwindowlistener (New windowclosing ());
F. addwindowlistener (New windowadapter () {// anonymous internal class
Public void windowclosing (windowevent e ){
System. Exit (0 );
}
});

// Add listener
For (INT I = 0; I <Sarr. length; I ++)
{
If (buttons [I]. gettext (). compareto ("0")> = 0) & (buttons [I]. gettext (). compareto ("9") <= 0) & (buttons [I]. gettext ()! = "1/X ")){
Buttons [I]. addactionlistener (New numbuttonlistener ());
};
}
}

Public static void main (string [] ARGs ){

New mycalc ("mycalc", 0, 0, 400,280 );
 
}

Class numbuttonlistener implements actionlistener
{
Public void actionreceivmed (actionevent ){
TF. settext (numappend. append (A. getactioncommand (). tostring ());
}
};

Class operatorlistenter implements actionlistener {
Public void actionreceivmed (actionevent ){

// If (numappend. tostring ()! = NULL ){
If (operator. Length ()> 0) & (numappend. Length ()> 0) & (result. Length ()> 0 )){
Double N = new double (numappend. tostring (). doublevalue ();
Double R = new double (result). doublevalue ();

// Execute +-*/Operation
If (operator = "+ "){
R + = N;
} Else {
If (operator = "-"){
R-= N;
} Else {
If (operator = "*"){
R * = N;
} Else {
If (operator = "/"){
R = r/N;
}
}
}
} // +-*/Operation

Result = new double (R). tostring ();
TF. settext (result );
} Else {
If (numappend. Length ()> 0 ){
Result = numappend. tostring ();
}
}

If (operator = "= "){
TF. settext (result );
Operator = NULL;
}

Operator = A. getactioncommand ();
Numappend = new stringbuffer ();
}
}

}
/*

Class windowclosing extends windowadapter
{
Public void windowclosing (incluwevent we ){
System. Exit (0 );
}
};
*/