I need 2 small Projects in which cover these topics and explain each line please .(Java)

Abstraction

Inheritance

interface

exception handling

Need two small project as small as possible (you are free to create any type of project like hotel management system , banking system, or any type of small system or any small game using above topics Thank you).

kindly make as easy as possible that it will be easy to understand for me and also explain each line Thank you remember I need 2 different small project one of lab and one for theory Thank you Sir...