feat(app): add application entry point and execution plugin

second-part/hw-02/user-service/pom.xml

@@ -108,6 +108,16 @@
           <artifactId>maven-project-info-reports-plugin</artifactId>
           <version>3.6.1</version>
         </plugin>
+
+        <plugin>
+          <groupId>org.codehaus.mojo</groupId>
+          <artifactId>exec-maven-plugin</artifactId>
+          <version>3.5.0</version>
+          <configuration>
+            <mainClass>com.example.Main</mainClass>
+          </configuration>
+        </plugin>
+
       </plugins>
     </pluginManagement>
   </build>

second-part/hw-02/user-service/src/main/java/com/example/Main.java

@@ -0,0 +1,17 @@
+package com.example;
+
+public class Main {
+
+  public static void main(String[] args) {
+    UserDao userDao = new UserDao();
+
+    User user = new User();
+    user.setName("User");
+    user.setEmail("user@example.com");
+    user.setAge(99);
+
+    userDao.create(user);
+
+    System.out.println(user);
+  }
+}