上浒充通大学 SHANGHAI JIAO TONG UNIVERSITY 2.2 Specifying Interfaces Requirements analysis activities Identifying attributes and operations without specifying their types or their parameters. Object design:Three activities 1.Add visibility information 2.Add type signature information 3.Add contracts Software EngineeringSoftware Engineering 2.2 Specifying Interfaces Requirements analysis activities • Identifying attributes and operations without specifying their types or their parameters. Object design: Three activities 1. Add visibility information 2. Add type signature information 3. Add contracts