Introduction: public class UserProfile { private String username; private Integer age; // Getters and setters } public class UserProfileService { public void createUserProfile(UserProfile userProfile) { // Validate parameters using Parameter Validation Utils ValidationUtils.validate(userProfile); // Other business logic } } public class Main { public static void main(String[] args) { UserProfile userProfile = new UserProfile(); userProfile.setUsername("John"); userProfile.setAge(25); UserProfileService userProfileService = new UserProfileService(); userProfileService.createUserProfile(userProfile); } }


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