| Title | Topics | Action | |||
|---|---|---|---|---|---|
| 193 | Implement a Greetable InterfaceAn interface `Greetable` is provided with one method: `String greet()`. Complete... | easy | ○ Not Started | InterfacesClasses | Solve |
| 198 | Implement Resizable InterfaceAn interface `Resizable` is provided with two methods: `void resize(double facto... | medium | ○ Not Started | InterfacesClasses | Solve |
| 201 | Build an Interface-Based Notification SystemCreate two classes, `EmailNotifier` and `SmsNotifier`, that both implement the p... | hard | ○ Not Started | InterfacesClasses | Solve |
| 203 | Payroll System with Abstract and InterfaceBuild a small payroll system.
1. Create an interface `Payable` with a method `d... | hard | ○ Not Started | Abstract ClassesInterfaces | Solve |
| 204 | Stackable Interface with Undo HistoryCreate a class `UndoHistory` that implements the provided `Stackable` interface ... | hard | ○ Not Started | InterfacesClasses | Solve |
| 205 | Zoo Exhibit with Abstract Animals and Feedable InterfaceBuild a small zoo exhibit system.
1. Create an interface `Feedable` with a meth... | hard | ○ Not Started | Abstract ClassesInterfaces | Solve |