Write a few of their own small code (JSP calendar and JFrame Calculator) __js

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, Cld.get. Year) + "years" + (Cld.get (CLD). MONTH) (+1) + "month");
Out.println (Cld.gettime ());
Transfer calendar to the first day of the month
Cld.add (CLD). Date,1-cld.get (CLD). DATE));
Get the number of weeks of the day
int weekoffirstday = Cld.get (CLD. Day_of_week);
%>

<table border=1>
<tr bgcolor= "227799" >
<td> Day </td>
<td> a </td>
<td> two </td>
<td> three </td>
<td> Four </td>
<td> Five </td>
<td> Six </td>
</tr>
<tr>
<%
The number of previous blank spaces in the calendar is just the number of weeks on the first day of the month
for (int i=0;i<weekoffirstday-1;i++) {
Out.println ("<td></td>");
}

Cycle length is the maximum number of days of the month
for (an int i=0;i<cld.getactualmaximum (CLD). DATE); i++) {

Sunday on the front with "<tr>"
if (((weekoffirstday+i-1)% 7) ==0) {
Out.println ("<tr>");
}
I+1 is the number of dates
Out.println ("<td>" + (i+1) + "</td>");

Saturday on the back with "</tr>" based on HTML language can save </tr> so also can be removed
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 case conversion number is invalid
}
%>
</select>
<input type= "Submit" value= "submitted" >
</form>
</div>

Array full 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 + +");
JMenuItem mi12=new JMenuItem ("Paste (P) Ctrl + V");
JCheckBoxMenuItem mi21=new JCheckBoxMenuItem ("standard type (T)");
JCheckBoxMenuItem mi22=new JCheckBoxMenuItem ("Scientific type (S)");
JCheckBoxMenuItem mi23=new JCheckBoxMenuItem ("Digital Grouping (I)");
JMenuItem mi31=new JMenuItem ("Help topic (H)");
JMenuItem mi32=new JMenuItem ("About Calculator (a)");

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 (1,3,3,3));
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 inner 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 actionperformed (ActionEvent a) {
Tf.settext (Numappend.append (A.getactioncommand ()). ToString ());
}
};

Class Operatorlistenter implements actionlistener{
public void actionperformed (ActionEvent a) {

//  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 ();
   
   //perform +-*/operations
   if (operator== "+") {
     r+=n;
   }else{
    if (operator== "-") {
     r- =n;
    }else{
     if (operator== "*") {
       r*=n;
     }else{
      if (operator== "/") {
        r=r/n;
      }
     }
    }
   }//+-*/Operations

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 (WindowEvent we) {
System.exit (0);
}
};
*/