Create role for entity in java?

I have a company management system and in this company we have 2 roles, MANAGER and EMPLOYEE so MANAGER can:

• create , edit, delete product
• create, edit, delete EMPLOYEE

EMPLOYEE can:

• view, sell product
• delete himself account

Do I need create 2 classes for MANAGER and EMPLOYEE or create only 1 class USER and has 2 roles. And what is the best database design for this situation?