| Title | Topics | Action | |||
|---|---|---|---|---|---|
| 194 | Abstract Shape with CircleAn abstract class `Shape` is provided with an abstract method `double area()`. C... | easy | ○ Not Started | Abstract ClassesClasses | Solve |
| 197 | Abstract BankAccount with WithdrawAn abstract class `BankAccount` is provided with a `balance` field, a `deposit(d... | medium | ○ Not Started | Abstract ClassesClasses | Solve |
| 199 | Abstract Appliance with Power TrackingAn abstract class `Appliance` is provided with a `boolean isOn` field (starts fa... | medium | ○ Not Started | Abstract ClassesClasses | Solve |
| 202 | Abstract Shape Hierarchy with Rectangle and TriangleCreate an abstract class `Shape` with an abstract method `double area()` and a c... | hard | ○ Not Started | Abstract ClassesInheritance | 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 |
| 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 |