Interested to Buy Any Domain ? << Click Here >> for more details...
is it possible to create single instance of java class per
session in web application
- 4 Answers
- 11298 Views
- I also Faced
- E-Mail Answers
Answers were Sorted based on User's Feedback
Answer / savar33
Hi guys
the singleton solution will not work, since several nodes
are possible in the cluster, each node has it's own java.
Those singleton can be instanciated in each class.
Beside this the presented implementation of singleton design
pattern is improper. You should override constructor in this
way :
private Singleton(){};
I also would make getInstance() method synchronized. This is
multithreaded environment.
| Is This Answer Correct ? | 6 Yes | 0 No |
Answer / ananth
by using Singleton pattern we can achieve one instance per
class.
Public final class Singleton{
private static Singleton singleton;
public static Singleton getInstance()
{
if(singleton ==null)
{
singleton=new Singleton();
}
retuen singleton;
}
public void getvalue()
{
}
}
| Is This Answer Correct ? | 7 Yes | 6 No |
Answer / nirmal
The easiest way is to use RMI to start the app and check to
see if it's already running.
The basic structure is this:
The main method of your app checks the RMI registry to see
if the app is started. If so, exit.
Otherwise, the main creates an instance of the app (which
is a remote object) and registers it in the RMI registry.
The class' constructor creates the GUI and displays it.
Alternatively, you could create a "start" method that you
call via RMI to start the app.
| Is This Answer Correct ? | 0 Yes | 2 No |
Answer / sk.bilal ahmed
yes
eg.,
Public final class Singleton{
private static Singleton singleton;
public static Singleton getInstance()
{
if(singleton ==null)
{
singleton=new Singleton();
}
retuen singleton;
}
public void getvalue()
{
}
}
| Is This Answer Correct ? | 0 Yes | 2 No |
What is entity reference?
What is java technology stack?
How do you make a class immutable in java?
What is jaap?
What is java developer job description?
Which one should we prefer while using bean ? managed bean annotation or faces-config
Is j2ee and jee same?
Who generates bytecode in java?
What every java developer should know?
What is instance in java?
What is the use of method save()?
how many external variables are there in jsp ?
Core Java 
