spring-boot-rest/spring-websockets/src/main/java/com/baeldung/debugwebsockets/StompWebSocketClient.java

package com.baeldung.debugwebsockets;

import org.springframework.messaging.converter.MappingJackson2MessageConverter;
import org.springframework.messaging.simp.stomp.StompSessionHandler;
import org.springframework.web.socket.client.WebSocketClient;
import org.springframework.web.socket.client.standard.StandardWebSocketClient;
import org.springframework.web.socket.messaging.WebSocketStompClient;

import java.util.Scanner;

public class StompWebSocketClient {

    private static final String URL = "ws://localhost:8080/stock-ticks/websocket";

    public static void main(String[] args) {
        WebSocketClient client = new StandardWebSocketClient();
        WebSocketStompClient stompClient = new WebSocketStompClient(client);
        stompClient.setMessageConverter(new MappingJackson2MessageConverter());
        StompSessionHandler sessionHandler = new StompClientSessionHandler();
        stompClient.connect(URL, sessionHandler);

        new Scanner(System.in).nextLine();
    }
}