How do I run the server without using a while loop?

I'm trying to create a server program using datagram socket and datagram packet classes, but my current code uses an ugly while loop, which also freezes my program when the server runs, but the server runs well without any problems In any case, the code is as follows Anyway, can I use something different from the while loop or prevent the while loop from blocking any other code in the program?

protected void run() {
    try {
        socket = new DatagramSocket(port);
        socket.setBroadcast(true);
    } catch (Exception e) {
        e.printStackTrace();
        stopServer(); //stop the server
        return; 
    }
    while(isRunning()){ //hate this loop
        try {
            byte[] buf = new byte[256];
            DatagramPacket packet = new DatagramPacket(buf,256);
            socket.receive(packet);
            DatagramPacket serverPacket;
            byte[] serverBuf;
            byte hb = 0;
            byte lb = packet.getData()[0];
            int e = ((int)hb<<8)|((int)lb&0xFF); //translate byte to int
            switch(e) {
                case 2:
                    //do something
                    break;
                case 5:
                   //do something
                   break;
                case 7:
                    //do something
                    break;
                default:
                    //default stuff
                    break;
            }
        } catch (Exception e) {
            System.out.println("Fatal Server Error:");
            e.printStackTrace(); 
            stopServer(); //stop the server
            return; //stop the method
        }
    }
}

Solution

You should put it in a new thread The process of receiving packets involves synchronous IO, so it will always block any thread it runs

For clarity, it is not the while loop itself that causes the rest of the program to wait This is socket Receive() call