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+package com.sahana.inventory.user.service;%0A%0Aimport java.util.List;%0A%0Aimport com.sahana.inventory.user.model.User;%0A%0A%0A%0Apublic interface UserService %7B%0A%09%0A%09User findById(long id);%0A%09%0A%09User findByName(String name);%0A%09%0A%09void saveUser(User user);%0A%09%0A%09void updateUser(User user);%0A%09%0A%09void deleteUserById(long id);%0A%0A%09List%3CUser%3E findAllUsers(); %0A%09%0A%09void deleteAllUsers();%0A%09%0A%09public boolean isUserExist(User user);%0A%09%0A%7D%0A

Create UserService.java