<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>tests</groupId>
    <artifactId>vktest2</artifactId>
    <version>1.0-SNAPSHOT</version>

    <properties>
        <maven.compiler.source>6</maven.compiler.source>
        <maven.compiler.target>1.6</maven.compiler.target>
    </properties>


    <dependencies>
        <dependency>
            <groupId>com.vk.api</groupId>
            <artifactId>sdk</artifactId>
            <version>0.5.12</version>
        </dependency>


        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-jdk14</artifactId>
            <version>1.7.22</version>
        </dependency>

        <dependency>
            <groupId>org.apache.logging.log4j</groupId>
            <artifactId>log4j-slf4j-impl</artifactId>
            <version>2.7</version>
        </dependency>

        <dependency>
            <groupId>org.apache.logging.log4j</groupId>
            <artifactId>log4j-api</artifactId>
            <version>2.7</version>
        </dependency>
        <dependency>
            <groupId>org.apache.logging.log4j</groupId>
            <artifactId>log4j-core</artifactId>
            <version>2.7</version>
        </dependency>
        <dependency>
            <groupId>org.apache.tomcat</groupId>
            <artifactId>tomcat-servlet-api</artifactId>
            <version>9.0.13</version>
        </dependency>



    </dependencies>


</project>

<?xml version="1.0" encoding="UTF-8"?>

<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee
                      http://xmlns.jcp.org/xml/ns/javaee/web-app_4_0.xsd"
  version="4.0"
  metadata-complete="true">

  <display-name>test</display-name>
  <description>
  test
  </description>

<servlet>

    <servlet-name> privetstvie </servlet-name>
    <servlet-class>testvk</servlet-class>


</servlet>


<servlet-mapping>

<servlet-name>privetstvie </servlet-name>
<url-pattern>/hello</url-pattern>


</servlet-mapping>



</web-app>

import com.vk.api.sdk.actions.Messages;
import com.vk.api.sdk.actions.Users;
import com.vk.api.sdk.client.TransportClient;
import com.vk.api.sdk.client.VkApiClient;
import com.vk.api.sdk.client.actors.GroupActor;
import com.vk.api.sdk.exceptions.ApiException;
import com.vk.api.sdk.exceptions.ClientException;
import com.vk.api.sdk.httpclient.HttpTransportClient;
import org.apache.http.protocol.HTTP;


import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.io.PrintStream;
import java.io.PrintWriter;


public class testvk extends HttpServlet  {
    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {

        PrintWriter printWriter = resp.getWriter();
        printWriter.write("test");
        sendvk();



    }


    public static void sendvk() {

           // тут код, который отправляет в лс сообщение

    }

}