Is there a way to check if a phone number is a WhatsApp contact?

[lucioufba]

Hi,
Is there a way to check if a phone number is a WhatsApp contact?
Thanks!

[EDMPhoenix]

[lucioufba]

Hi @EdmTechPhoenix ,

Thanks for the answer.

But, I want to know how to do this via the whatsappweb4j API, using java.

[lucioufba]

Hi @EdmTechPhoenix ,
Thank you very much. I'm really happy with your help!

Wich version of WhatsappWeb4j did you use in this example code?
I didn't find these classes in the version 3.5.1 (suggested in the current readme file) :

        <dependency>
            <groupId>com.github.auties00</groupId>
            <artifactId>whatsappweb4j</artifactId>
            <version>3.5.1</version>
        </dependency>

[Auties00]

These replies are clearly generated using an llm, please ignore them

[Auties00]

there's a method in the WhatsApp class called hasWhatsapp

[lucioufba]

I found it here now,
thank you very much!

[thmHassan]

whats the daily limit for this via one API and can we do multiple deployments? also how to connect with you? I am currently developing solution for my firm where i might have to deploy multiple instances of whatsapp running at the same time and yours seemed reliable