A timing class

 

Package sony. utils;

Import java. util .*;
Import javax. servlet. jsp .*;
/**
* A timing class.
* Creation date: (13:09:38)
* Author: SonyMusic (sonymusic@china.com)
*/
Public class Timing {
Private ArrayList nameArray = new ArrayList ();
Private ArrayList timeArray = new ArrayList ();
Private javax. servlet. jsp. JspWriter out;
Private boolean inJsp = false;
/**
* This constructor is used in JAVA.
*/
Public Timing (){
Super ();
This. inJsp = false;
}
/**
* Timing constructor is used in JSP.
*/
Public Timing (javax. servlet. jsp. PageContext pageContext ){
Super ();
This. out = pageContext. getOut ();
This. inJsp = true;
}
/**
* The insert method is described here.
* Creation date: (13:40:36)
* @ Param name java. lang. String
*/
Public void add (String name ){
If (name = null // name. length () = 0) name = "Default ";
// If (name. length ()> 7) name = name. substring (0, 7 );
NameArray. add (name );
TimeArray. add (Calendar. getInstance ());
}
/**
* This is used in JAVA.
* Creation date: (14:39:43)
* @ Param args java. lang. String []
*/
Public static void main (String [] args ){
Timing time = new Timing ();
Time. add ("Start ");
Random ran = new Random ();
Int I = 0, j = 0;
For (I = 0; I <10000000; I ++)
J + = ran. nextInt ();
Time. add ("After 100 ");
For (I = 0; I <100000; I ++)
J + = ran. nextInt ();
Time. add ("After 100000 ");
For (I = 0; I <100000; I ++)
J + = ran. nextInt ();
Time. add ("After 100000 ");
Time. show ();
}
/**
* The insert method is described here.
* Creation date: (13:43:24)
*/
Public void show (){
If (inJsp)
ShowInJsp ();
Else
ShowInJava ();

}
/**
* The insert method is described here.
* Creation date: (13:46:06)
*/
Private void showInJava (){
If (nameArray. isEmpty ()){
System. out. println ("No time point has been added! ");
Return;
}
Calendar oldCal = null, cal = null, firstCal;
// = Calendar. getInstance ()
String name;
FirstCal = (Calendar) timeArray. get (0 );
System. out. println ("serial number name time (seconds )");
For (int I = 0; I <nameArray. size (); I ++ ){
Name = (String) nameArray. get (I );
Cal = (Calendar) timeArray. get (I );
System. out. print (I + 1 );
System. out. print ("");
System. out. print (name + "");
System. out. print (cal. get (Calendar. HOUR_OF_DAY) + ":" + cal. get (Calendar. MINUTE) + ":" + cal. get (Calendar. SECOND) + ". "+ cal. get (Calendar. MILLISECOND ));
System. out. print ("");
If (oldCal = null ){
System. out. println ("NONE ");
}
Else {
Long diffTime = cal. getTime (). getTime ()-oldCal. getTime (). getTime ();
System. out. println (double) diffTime/1000 );
}
OldCal = cal;
}
System. out. println ("");
If (nameArray. size () = 1 ){
System. out. println ("only one time point is added and the time cannot be counted! ");
}
Else {
Long diffTime = oldCal. getTime (). getTime ()-firstCal. getTime (). getTime ();
System. out. println ("Total time consumption:" + (double) diffTime/1000 + "seconds ");
}
}
/**
* The insert method is described here.
* Creation date: (13:57:56)
*/
Private void showInJsp (){
Try {
If (nameArray. isEmpty ()){
Return;
}
Calendar oldCal = null, cal = null, firstCal;
String name;
Long diffTime;
FirstCal = (Calendar) timeArray. get (0 );
System. out. println ("serial number name time (seconds )");
String str = "";
Str + = "<table width =" 400 "border =" 1 "cellspacing =" 0 "cellpadding =" 0 "> ";
Str + = "<tr> <td> NO. </td> <td> name </td> <td> time consumed (in seconds) </td> </tr> ";
For (int I = 0; I <nameArray. size (); I ++ ){
Str + = "<tr> ";
Name = (String) nameArray. get (I );
Cal = (Calendar) timeArray. get (I );
Str + = "<td> ";
Str + = I + 1;
Str + = "</td> ";
Str + = "<td>" + name + "</td> ";
Str + = "<td>"
+ Cal. get (Calendar. HOUR_OF_DAY)
+ ":"
+ Cal. get (Calendar. MINUTE)
+ ":"
+ Cal. get (Calendar. SECOND)
+ "."
+ Cal. get (Calendar. MILLISECOND)
+ "</Td> ";
If (oldCal = null ){
// System. out. println ("NONE ");
Str + = "<td> none </td> ";
} Else {
DiffTime = cal. getTime (). getTime ()-oldCal. getTime (). getTime ();
Str + = "<td>" + (double) diffTime/1000 + "</td> ";
}
OldCal = cal;
Str + = "</tr> ";
}
Str + = "<tr> <td colspan =" 4 "> ";

If (nameArray. size () = 1 ){
Str + = "only one time point is added and time cannot be counted! ";
} Else {
DiffTime = oldCal. getTime (). getTime ()-firstCal. getTime (). getTime ();

Str + = "Total time consumed:" + (double) diffTime/1000 + "seconds ";
}
Str + = "</td> </tr> ";
Str + = "</table> ";
Out. println (str );
} Catch (java. io. IOException e ){
}

}
}


The usage in JSP is as follows:

<% @ Page contentType = "text/html; charset = gb2312" %>
<% @ Page import = "sony. utils. *, java. util. *" %>
<Html>
<Head>
<Title> Untitled </title>
</Head>

<Body>
<%
Timing time = new Timing (pageContext );
Time. add ("Start ");
Random ran = new Random ();
Int I = 0, j = 0;
For (I = 0; I <1000000; I ++)
J + = ran. nextInt ();

Time. add ("After 100 ");
For (I = 0; I <100000; I ++)
J + = ran. nextInt ();
Time. add ("After 100000 ");
For (I = 0; I <100000; I ++)
J + = ran. nextInt ();
Time. add ("After 100000 ");

Time. show ();
%>
</Body>
</Html>