Whatsapp Java J2me Link Here

We will use a simple client-server architecture for our app. The client will be the J2ME application running on the mobile device, and the server will be a simple Java-based server that handles user registration, contact list management, and message routing.

Unlike modern apps that rely heavily on resource-heavy JSON or REST APIs, the J2ME version of WhatsApp used a custom, streamlined version of . Data was compressed using FunXMPP (a proprietary binary XML protocol) to minimize bytecode size and reduce mobile data consumption, which was highly expensive at the time. 2. Push Notifications Without an OS Layer Whatsapp java j2me

: Devices often allocated less than 2 MB of heap memory for running applications. We will use a simple client-server architecture for our app

Group messaging was fully supported, allowing communities to stay connected. Data was compressed using FunXMPP (a proprietary binary