Fluent interface pattern

 public class UserConfigurationManager {
    private String userName;
    private String password;
    private UserConfigurationManager() {
    }
    public UserConfigurationManager setUserName(String userName) {
        this.userName = userName;
        return this;
    }
    public UserConfigurationManager setPassword(String password) {
        this.password = password;
        return this;
    }
    public static UserConfigurationManager make(Consumer<UserConfigurationManager> consumer) {
        System.out.println("making configuration..........");
        UserConfigurationManager configurationManager = new UserConfigurationManager();
        consumer.accept(configurationManager);
        return configurationManager;
    }
}

public class MainApp {
    public static void main(String[] args) {
        UserConfigurationManager.make(configManager -> configManager.setUserName("lokman").setPassword("12345"));
    }
} 

Note: Fluent pattern can be used to define Model in JPA