Beans behaves differently with more requests

Question

Hi,
I have the following part of jsp calling my bean
<jsp:useBean id="proj_fileCopy" class="bean.FileCopy">
          <jsp:setProperty name="proj_fileCopy" property="source" value="<%=userFile_Share+"//"+newFileName%>" />
          <jsp:setProperty name="proj_fileCopy" property="destination" value="<%=newFilePath%>" />
          <jsp:setProperty name="proj_fileCopy" property="filecopy" value="" />
       <jsp:setProperty name="proj_fileCopy"   property="toocopy" value="" />
     </jsp:useBean>
proj_fileCopy.callMethod();when I call the bean with just single user logged into my application the bean completes a task within 2 minutes.
whereas simultaneously when multiple users get logged in the bean takes twice the time i.e., 4minutes.
In the bean I have the follwing part of code in which the bean executes a command prompt task and waits till the command prompt task gets completed as shown below
ProcessBuilder builder = new ProcessBuilder(command);
builder.directory(new File(commandtask));// gives the script location
Process p1 = builder.start();
InputStream is = p1.getInputStream();
InputStreamReader isr = new InputStreamReader(is);
BufferedReader br = new BufferedReader(isr) ;
String lineRead = br.readLine();//
while(lineRead!=null)
          counter++;
          lineRead = br.readLine();
          //System.out.println("lineRead:"+lineRead);
     }what can I do for this.

Answer 1

Hi balusc,
I tried with java. any way I will give a try again.I have posted my code below. please go through them and suggest some tips to make them efficient.
I know its too lengthy, but I hope I can get some help to make it efficient
below is the jsp that passes parameters to bean
<jsp:useBean id="trasfer" class="bean.UploadFile" >
<jsp:setProperty name="trasfer" property="previousVersion" value="<%=srcPath%>" />
<jsp:setProperty name="trasfer" property="backupID" value="<%=File_Name%>" />
<jsp:setProperty name="trasfer" property="userpath" value="<%=File_Share%>" />
<jsp:setProperty name="trasfer" property="projpath" value="<%=newPath%>" />
<jsp:setProperty name="trasfer" property="newFileName" value="<%=newName%>" />
<jsp:setProperty name="trasfer" property="Destination" value="<%=destPath%>" />
</jsp:useBean>
<%
trasfer.goAhead();
%> Below is the bean that takes the parameters from jsp. I call the goAhead() method from jsp.
import java.beans.*;
import java.io.Serializable;
import java.sql.*;
import java.io.*;
public class CopyFile extends Object implements Serializable {
    private String previous_Name = "";
    private String backup_ID = "";
    private String user_Path = "";
    private String project_Path = "";
    private String currentVersion_Name="";
    private String backup_Src = "";
    private String backup_Dest = "";
    private String fileType_ID = "";
    public CopyFile() {
    public void setPreviousVersion(String previous_Name){
        this.previous_Name = previous_Name;
     public void setBackupID(String backup_ID){
        this.backup_ID = backup_ID;
      public void setUserHomepath(String userHome_Path){
        this.user_Path = user_Path;
        public void setProjpath(String project_Path){
        this.file_Path = file_Path;
          public void setNewFileName(String currentVersion_Name){
        this.currentVersion_Name = currentVersion_Name;
          public void setBackupSource(String backup_Src){
        this.backup_Src = backup_Src;
     public void setBackupDestination(String backup_Dest){
        this.backup_Dest = backup_Dest;
        public void setFileType(String fileType_ID){
        this.fileType_ID = fileType_ID;
        public void goAhead(){
           try{
                File backupFile = null;
                String user_File = user_Path+"/"+currentVersion_Name;
                String proj_File = file_Path+currentVersion_Name;
               if(!previous_Name.equals(""))  {
                   File prv_Version = new File(previous_Name);
                   backupFile =    new File(project_Path+backup_ID);
                   backup_Dest = backup_Dest+backup_ID;                 
                         //the below code copies the file to location B
                   TransferFile copyVersion = new TransferFile();          
                   copyVersion.moveFile(user_File,proj_File);   
                   //the below code copies the file to location C
               //In this class only I am calling wait.For() method
               BackupVersions copyBackup = new BackupVersions();          
               copyBackup.moveFile(backupFile.toString(),backup_Dest,"BACKUP");
           }catch(NullPointerException npe){
               System.out.println("NPE in CopyFile"+npe);
}will continue uin next post