How to send concurrent HTTP requests to a service in Java

Hi All,

I'm new to Java world, So I need small help from Java geeks over here
I want to send multiple concurrent requests (say 100) to a Java web service and want to log the response back asynchronously.
I have tried searching on internet, But I was not able to find any proper answer(Maybe due to my little knowledge).
Any lead would be helpful.

Thanks in Advance for your time and inputs.

You can make use of shell scripting to make a curl request 100 times and log back the response in a text file which might be some .text or .log file

@ Sibendu, Thank you so much for your help. it is really helpful.
I will try with curl.
Here, I would like to ask is there any way using Java code to achieve this?
As I was searching, I found that there is concurrent package in Java which can provide this functionality.
But I'm still searching how to achieve that.
Thanks again

In java , every http request is routed through a servlet dispatcher which in turn invokes a servlet.Each http request is handled as a separate operation in its  own call stack ( by a thread).So multiple threads will be created by the container to take care of multiple requests.Having said so you do need to take care about your classes and their members being accessed concurrently by several threads with the help of synchronization mechanism.

Apache provides advanced Http java libraries to achieve more complex scenarios easily.

Details are here.

I think for your requirement, Asynch HttpClient can be better choice.

@Omkar, Thank for help.

I was trying to use Async HttpClient. I have gone documentation and sample example
Here is the sample code that I found, where we can add multiple requests.

final HttpGet[] requests = new HttpGet[] {
                   new HttpGet("http://www.apache.org/"),
                   new HttpGet("https://www.verisign.com/"),
                   new HttpGet("http://www.google.com/")
           };

But I want to single POST request multiple time (Say 100) concurrently.

So is there any method, which provides such capability.
Thanks

Probably you can have a look here.
AsyncHttpClient.java exposes APIs for http requests.
Needs some API exploration.

There are a couple of open-source stress-test apps in Java that do that. I don't remember their names offhand, but one or 2 of them are Apache products.