synchronize « Thread « JSP-Servlet Q&A

1. Servlets and synchronization stackoverflow.com

Servlets runs in several threads, so my question is: If I have a lot of servlets which call some utility class (DbUtils, for example

Connection c = DbUtils.getConnection();
//....some action with db here

should I ...

2. synchronization question coderanch.com

I've got quite far with a project (student), and now I'm thinking I should synchronize some of my database access methods. I've got one class called DataBean which is an application scope bean, and which contains all of the methods that access the database. What I'm trying to figure out is how I should organise synchronizing some of its methods. I ...

3. Synchronization coderanch.com

4. Synchronization approach coderanch.com

Process flow is as follows :- 1.)I need to read an excel file and upload it into the database table 'T'. 2.) 'X' procedure will execute to read table 'T'( from Step 1) and will perform some validations. All this processing is done in related DAO. My problem is :- What parts should I synchronize to maintain data in a consistent ...

5. Synchronize a method coderanch.com

6. Synchronize JSP coderanch.com

7. Question About Synchronization coderanch.com

I have an object in application scope. Object contains cached data and iterate the object [][]. I am getting the reference of the object in many jsp files and utilizing data from it. At any given point of time, there will be at least 20 references of the object. Now my question is, since there will be a single Object in ...

8. JSP synchronization coderanch.com

In a JSP file I have a customerID which is stored in a session. This customerID I use to recieve (select only) some customer information from a database, through a java class. I have doubt about if there can be any synchronization problems, if more users is accessing the page the same time, and i.e. CUSTOMER A is recieving CUSTOMER Bs ...

9. JSP threads and synchronization coderanch.com

hello, could someone help me please this synchronization thing with jsp/servlets is very confusing and complex issue.. If, for example, I have following simple class Person, which interacts with DB.. package test; class Person{ String name, email; Person(String name, String email){ this.name=name; this.email=email; } public void InsertPersonIntoDB(Person p){ // fetch connection from connection pool // use connection (insert p into DB) ...

10. tagSupport and synchronization issues coderanch.com

Hello, could someone help me here please? I have issues with Tomcats JSP's tagSupport-type customtags and synchronization. With servlets synchronization problems raise with simultoneus usage of instance (or class) variables, eg. if variable is declared inside class declaration instead of declaration inside method (like doGet/doPost). So, if variable is declared inside method (like doGet), no problems can occure. Now, when JSP ...

11. how to avoid synchronization problem in webpage coderanch.com

12. JSP calling POJO - Synchronization question coderanch.com

Thanks for you swift replies guys, I'll try and answer them both: The POJO doesn't use any database connections, or change state in any shared objects. It is not really very sophisticated, just an attempt to introduce some reusable component(s) into a heavily scripted environment. It is accessing data in a content management system (Communique), which is a java-based system where ...

13. Servlet synchronization question..... coderanch.com

I'm interested in understanding this problem. I have been doing servlets for a while now, but don't know a lot of the behind-the-scenes stuff. It just works! Anyway, I've always been worried about something like this happening - multiple users hitting a servlet and seeing data that isn't their own. Can anyone explain why something like this would happen, and what ...

14. Synchronization in servlets coderanch.com

15. Where do I need synchronization in Servlets? coderanch.com

16. synchronization in servlets coderanch.com

Dear Reddy, This question that you have asked is more generic. There are n reasons for when to go for Vector and when for array list. But, it all depends on the application. Servlet runs on server side. It is instantiated once (but depending on webserver, there can be more than 1 instance for load balancing) and whenever a user request ...

17. How must i "synchronize" my servlets? coderanch.com

Hey guys, I'm quite new to java servlets.. I wrote a web app where it uses a hsqldb database and the jdbc driver to access it.. I wrote a specific class which is not a servet to handle the database.. import java.io.*; import java.math.BigDecimal; import java.net.*; import java.sql.*; import java.util.Calendar; import java.util.Map; /** * * @author Malith * @version */ public ...