how to identify an image,everytime, until match found from the set of images

I am not aware, that there is a valid combination of Selenium IDE and Java programming.

So if you want to use SikuliX, first get some knowledge about it's features using the SikuliX IDE.
http://sikulix.com

The rest is programming knowledge.

Just changing the question a bit, does not make it clearer.

Not sure what you are doing:
How do you want to access SikuliX Java classes from the Selenium IDE?

again comment #1:
So if you want to use SikuliX, first get some knowledge about it's features using the SikuliX IDE.
http://sikulix.com

The rest is programming knowledge.

Thanks RaiMan, for your swift look..

Here, i tried to write a script on window based application using Sikulix, to prevent manual intervention

So I automated it completely but the application pop ups order is not always in same order.. due to this, i need to update my script again and again..

So, am trying automate this step like, when an alert [captured as .png image] came then, I want to check the set of .png images till the alert image is matched.

Not sure whether to automate this step is possible or not but trying..

If I understand right, then you currently have a simple script like this

wait(popup1)
click(popup1)
wait(popup2)
click(popup2)
wait(popup3)
click(popup3)
...

but the next time you might need this:

wait(popup3)
click(popup3)
wait(popup1)
click(popup1)
wait(popup2)
click(popup2)
...

if you want to make this "self-adjusting", then you need some loop and decision logic.

So what is your programming/scripting skill in Python?
Why did you talk about Java? any knowledge?

Exactly, you understood correct.. i used "if else if" statement and Screen class while writing logic then Java Robo for controlling the operations,

am Using Selenium IDE and Java language. Here am surfing for the information to write a logic..

the principal approach in pseudo code:

while true {

  if (exists(popup1, 0)) {
    // do what has to be done
  } else if (exists(popup2, 0)) {
    // do what has to be done
  } else if (exists(popup3, 0)) {
    // do what has to be done
  } else if(exists(popup4, 0)) {
    // do what has to be done
  } else if {
    // may be wait some time before next loop turn
    // or decide to terminate the loop
  }

}

exists() is a SikuliX feature, that returns null if not found and the match otherwise.
the second parameter 0 tells exists to not wait for the image, but only look for it one time (so rather fast).

Super.. let me try this.. Thank you RaiMan!