Simple question on /jsp:useBean

Hi,
I have a bean within my jsp page. My page doesnt have the </jsp:useBean> code. When users go to my site everything is good. If they hold down F5 for a while, the page hangs and it hangs the whole site until its finished. Its like hold down F5 for 30 = submitting hundreds of jobs that just fill up the jsp server.
1) Should i be using the usebean end tag???
2) Is there a way to kill the previous process when user hits f5=refresh, so all the processes dont build up??
3) Would not using the </jsp:useBean> cause this build up????
Thanks so much. I will take any information that I can get.

Hi,
I have a bean within my jsp page. My page doesnt have
the </jsp:useBean> code. That is fine the scope of the bean ends once the page ends.If you use the tag then the engine will instantiate the bean for you,i believe you will be importing the class and then instantiating it.
When users go to my site
everything is good. If they hold down F5 for a while,
the page hangs and it hangs the whole site until its
finished. F5 means refreshing the page is sending the request back to the servlet instance(jsp),So if there are 100 requests send then there will be 100 threads using the same instance of the servlet if single theread model is not implemented.As I specified 100 threads using same instance the control will not go to next request thread unless first finishes(Without single thread model).in jsp use can use
isthreadsafe=false to implement the Single thread model.
Using this model will create the multiple instances of the servlet and improve the efficiency but more allocations will be held.
1) Should i be using the usebean end tag???Don't require to do,should be able to work explicitly
2) Is there a way to kill the previous process when
user hits f5=refresh, so all the processes dont build
up??Killing the previous process is the wrong term to say actually u should ask for the previous request ie Thread.The process killing means killing the JVM(System.exit(0)),ie stopping the engine.
The previous thread cannot be controlled by one who has created and it is the engine who has created the request threads.I wont say that cannot be done but requires to modify the container code and if you do so you will bw deviating from the specifications.
What you can do get the responses faster by implementing the singleThread model(In jsp use istheeadsafe=false in jsp page tag).
Hope this will help you.
regards vicky

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null

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Hello,
I have a type called Country and I have declared a bean using the "jsp:useBean" syntax.
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package com.parispano.latinamericaguide;
* @author Julien Martin
* Represents a country.
public class Country implements Comparable {
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     private String capital;
     private String currency;
     private String flag;
     private String internet_domain;
     private String dialling_code;
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     private float male_life_expectancy;
     private float female_life_expectancy;
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     private int population_year;
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     private int birth_rate_year;
     private float death_rate;
     private int death_rate_year;
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     private int gdp_per_head;
     private int gdp_year;
     private float unemployment_rate;
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          String capital,
          String currency,
          String flag,
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          float literacy,
          float male_life_expectancy,
          float female_life_expectancy,
          String map,
          int population,
          int population_year,
          float birth_rate,
          int birth_rate_year,
          float death_rate,
          int death_year_rate,
          int gdp,
          int gdp_year,
          float unemployment_rate,
          int unemployment_rate_year) {
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          this.birth_rate_year = birth_rate_year;
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          this.death_rate_year = death_year_rate;
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          this.unemployment_rate_year = unemployment_rate_year;
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          return birth_rate_year;
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          return death_rate_year;
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          return internet_domain;
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     public float getMale_life_expectancy() {
          return male_life_expectancy;
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          return population;
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          birth_rate = f;
     public void setBirth_rate_year(int i) {
          birth_rate_year = i;
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          capital = string;
     public void setCurrency(String string) {
          currency = string;
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          death_rate = f;
     public void setDeath_rate_year(int i) {
          death_rate_year = i;
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          dialling_code = string;
     public void setFemale_life_expectancy(float f) {
          female_life_expectancy = f;
     public void setFlag(String string) {
          flag = string;
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     public void setGdp_year(int i) {
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          id = i;
     public void setInternet_domain(String string) {
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          literacy = f;
     public void setMale_life_expectancy(float f) {
          male_life_expectancy = f;
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          unemployment_rate_year = i;
     public String toString() {
          return name;
     public int compareTo(Object o) {
          Country c = (Country)o;
          int cmp = name.compareTo(c.name);
          System.out.println(cmp);
          return cmp;
}Can anyone please help?
Thanks in advance,
Julien.

Thanks,
I have added scope="application". It still show "null" indicating that the bean is not initialized with the properties. I would like a quicker way to initialize a bean property than invoking the setProperty tag for each property.
Here is a simple example that demonstrates the problem:
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<%@ page import="com.tests.*" %>
<jsp:useBean id="monBean" class="com.tests.MonBean" scope="application"/>
<%
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%>
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Any other idea why this is not working?
Thanks,
Julien

Why do we need jsp:useBean???

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Thanks in advance.

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package test;
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ram.

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I have writed a EJB module,and I have deployed to
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2.If I only know the EJB interfaces,that means the
EJB module is writed by other programer.I want to
know how I can write the client program.How can I
call EJB module's method writed by other
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        } catch (NamingException namingException) {
            namingException.printStackTrace();
        } catch(Exception exception) {
            exception.printStackTrace();
}Here's a sample client app code I use for a HelloWorld EJB. You need to have a EJB client JAR containing the home and remote interfaces in the classpath during compile time and runtime.
x

Simple question on /jsp:useBean

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