Interface.. 1. A class can implement from many interfaces 2. A class may or may not implement all methods of an interface 3. There can no fields in a interface 4. There can be no access modifiers. By default all methods are public. 5. No default implementation allowed in interface 6. Define peripherial abilities of a class which two different types of sub classes can inherit 7. Performance: codes requires more time to find the actual method in a class 8. Adding new method to base interface class would require finding all classes that implement the interface and implementing new method Abstract 1. A class can inherit from only one abstract class 2. A class has to implement all methods of an interface 3. Fields are allowed 4. Different access modifiers are allowed. 5. You can provide default implementations 6. Defines core abilities of a class. 7. Performace: fast 8. Adding new method, we can provide a default implementation for all classes in one base abstract class. A good example can