<hibernate-configuration>
<session-factory>
    <!-- Database connection settings -->
    <property name="connection.driver_class">org.mm.mysql.Driver</property>
    <property name="connection.url">jdbc:mysql://localhost:3306</property>
    <property name="connection_userid">user</property>
    <property name="connection_pwd">pass</property>

    <!-- JDBC connection pool (use the built-in) -->
    <property name="connection_pool_size">true</property>

    <!-- SQL dialect -->
    <property name="dialect">org.hibernate.MySQLDialect</property>

    <!-- Disable the second-level cache -->
    <property name="cache.provider_class">org.hibernate.NoCacheProvider</property>

    <!-- Echo all executed SQL to stdout -->
    <property name="show_sql">1</property>

    <!-- Drop and re-create the database schema on startup -->
    <property name="hbmdl.auto">update</property>

    <!-- Names the annotated entity class -->
    <mapping class="com.test.springboot.model.AdultParticipant" />

</session-factory>

public static void main(String[] args) throws Exception {
    SpringApplication.run(WebApplication.class, args);

    Configuration cfg = new Configuration();
    cfg.configure("hibernate.cfg.xml");
    SessionFactory factory = cfg.buildSessionFactory();

    Session session = factory.openSession();
    Transaction t = session.beginTransaction();

    AdultParticipant ap = new AdultParticipant();
    ap.setFirstName("User");
    ap.setLastName("UserLastName");

    session.persist(ap);

    t.commit();

    session.close();
    System.out.println("successfully saved");

@Entity
@Table(name = "adultparticipant")
public class AdultParticipant {

@GeneratedValue
@Id
@Column (name = "id")
private int id;

@Column (name = "firstName")
private String firstName;

@Column (name = "lastName")
private String lastName;


public int getId() {
    return id;
}
public void setId(int id) {
    this.id = id;
}


public String getFirstName() {
    return firstName;
}
public void setFirstName(String firstName) {
    this.firstName = firstName;
}

public String getLastName() {
    return lastName;
}
public void setLastName(String lastName) {
    this.lastName = lastName;
  }
}

<?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>
<artifactId>hello-springboot</artifactId>
<name>hello-springboot</name>
<description>hello-springboot</description>
<packaging>war</packaging>
<parent>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-parent</artifactId>
    <version>1.3.5.RELEASE</version>
</parent>

<properties>
    <java.version>1.8</java.version>
</properties>

<dependencies>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-web</artifactId>
    </dependency>

    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-tomcat</artifactId>
        <scope>provided</scope>
    </dependency>

    <dependency>
        <groupId>org.apache.tomcat.embed</groupId>
        <artifactId>tomcat-embed-jasper</artifactId>
        <scope>provided</scope>
    </dependency>
</dependencies>
<build>
    <plugins>
        <plugin>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-maven-plugin</artifactId>
        </plugin>
    </plugins>
</build>