Add users on Keycloak 3.1.0.Final

KeycloakManager.java

public class KeycloakManager {

	private Keycloak keycloak;

	/**
	 * Singleton method
	 * @param properties KeycloakProperties is a pojo to store configuration info
	 */
	public static KeycloakManager getInstance(KeycloakProperties properties) {
		KeycloakManager manager = new KeycloakManager(properties);
		return manager;
	}

    /**
	 * Constructor with Keycloak Builder
	 * @param properties KeycloakProperties is a pojo to store configuration info
	 */
	private KeycloakManager(KeycloakProperties properties) {
		this.keycloak = KeycloakBuilder.builder().serverUrl(properties.getKeycloakUrl())
				.realm(properties.getKeycloakMasterRealm()).clientId(properties.getMasterClient())
				.username(properties.getKeycloakAppUsername()).password(properties.getPassword())
				.resteasyClient(new ResteasyClientBuilder().connectionPoolSize(10).build()).build();
	}

    /**
	 * Method to create an user and 
	 * @param properties KeycloakProperties is a pojo to store configuration info
	 */
	public Response createUser(UserKeycloak userKeycloak) {
		UserRepresentation user = new UserRepresentation();

		user.setUsername(userKeycloak.getUsername());
		user.setFirstName(userKeycloak.getFirstName());
		user.setLastName(userKeycloak.getLastName());
		user.setEnabled(true);

		if (userKeycloak.getEmail() != null) {
			user.setEmail(userKeycloak.getEmail());
		}

		RealmResource realmResource = keycloak.realm(properties.getAppRealm());
		UsersResource usersResourceAll = realmResource.users();
		return usersResourceAll.create(user);
	}
}

pom.xml

<?xml version="1.0" encoding="UTF-8"?>
<project
	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"
	xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
  <!--
      ...
  -->
	<properties>
		<keycloak.version>3.1.0.Final</keycloak.version>
	</properties>
	<dependencies>
		<dependency>
			<groupId>org.keycloak</groupId>
			<artifactId>keycloak-admin-client</artifactId>
			<version>${keycloak.version}</version>
		</dependency>
		<dependency>
			<groupId>org.keycloak</groupId>
			<artifactId>keycloak-authz-client</artifactId>
			<version>${keycloak.version}</version>
		</dependency>
		<dependency>
			<groupId>org.jboss.resteasy</groupId>
			<artifactId>resteasy-jaxrs</artifactId>
			<version>3.1.3.Final</version>
		</dependency>
		<dependency>
			<groupId>org.jboss.resteasy</groupId>
			<artifactId>resteasy-multipart-provider</artifactId>
			<version>3.1.3.Final</version>
		</dependency>
		<dependency>
			<groupId>javax.ejb</groupId>
			<artifactId>javax.ejb-api</artifactId>
			<version>3.2</version>
		</dependency>
		<dependency>
			<groupId>org.jboss.resteasy</groupId>
			<artifactId>resteasy-jackson2-provider</artifactId>
			<version>3.1.3.Final</version>
		</dependency>
		<dependency>
			<groupId>org.jboss.resteasy</groupId>
			<artifactId>resteasy-jackson-provider</artifactId>
			<version>3.1.3.Final</version>
		</dependency>
		<dependency>
			<groupId>org.jboss.resteasy</groupId>
			<artifactId>resteasy-client</artifactId>
			<version>3.1.3.Final</version>
		</dependency>
	</dependencies>
	  <!--
      ...
  -->
</project>