Upgrade to @SpringBootApplication

complete/src/main/java/hello/Application.java

@@ -4,21 +4,27 @@ import java.sql.ResultSet;
 import java.sql.SQLException;
 import java.util.List;
 
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.CommandLineRunner;
 import org.springframework.boot.SpringApplication;
-import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
-import org.springframework.context.ApplicationContext;
-import org.springframework.context.annotation.ComponentScan;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
 import org.springframework.jdbc.core.JdbcTemplate;
 import org.springframework.jdbc.core.RowMapper;
 
-@ComponentScan
-@EnableAutoConfiguration
-public class Application {
+@SpringBootApplication
+public class Application implements CommandLineRunner {
 
     public static void main(String[] args) {
-        ApplicationContext ctx = SpringApplication.run(Application.class, args);
+        SpringApplication.run(Application.class, args);
+    }
 
-        List<Person> results = ctx.getBean(JdbcTemplate.class).query("SELECT first_name, last_name FROM people", new RowMapper<Person>() {
+    @Autowired
+    JdbcTemplate jdbcTemplate;
+
+    @Override
+    public void run(String... strings) throws Exception {
+
+        List<Person> results = jdbcTemplate.query("SELECT first_name, last_name FROM people", new RowMapper<Person>() {
             @Override
             public Person mapRow(ResultSet rs, int row) throws SQLException {
                 return new Person(rs.getString(1), rs.getString(2));
@@ -28,6 +34,6 @@ public class Application {
         for (Person person : results) {
             System.out.println("Found <" + person + "> in the database.");
         }
-    }
 
+    }
 }