Which is true? Group of answer choices A class can implement multiple interfaces A class can inherit from multiple classes A class can implement only one interface An interface can implement multiple classes
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- Pick the incorrect statement: O A class can implement more than one interface O A class can extend more than one classes O An interface can extend more than one interfaces O An interface cannot extend a classInterfaces are used to define stronger is-a relationships because one class can inherit multiple interfaces. Ture or falseT/F1. Interface classes cannot be expanded, but implementation classes may.
- Computer Science we have learned about interfaces knowledge. Interfaces are preferred to define a common supertype for unrelated classes. Interfaces are more flexible than classes. You may design and consider the Animal class , and then you may suppose the how To Eat method is defined in the Animal class.In Java: Implementing a Superclass Employee Part 1: Implement a superclass Employee that has the following fields and methods. Fields: string firstName string lastName int employeeID double salary Methods: constructor method - initialize salary field to zero. setters and getters for firstName, lastName, and employeeID employee Summary method - prints all account attributes Part 2: Implement a Manager class that inherits from the Employee class. Fields: string department a Methods: employeeSummary method - prints all superclass and subclass attributes Ensure that your program has the two required classes and a test class.What do we means by class interface. Write a small piece of code to explain class interface
- An enumeration can contain public constant variables O True O False An interface can extend as many interfaces as the programmer wants O True O False An abstract class must contain at least 1 abstract method O True FalseWhich advantages do interfaces provide? Is it not more convenient to construct objects that belong to a certain class?Describe one advantage of requiring a class to implement an interface.
- When to use abstract classes: To implement the same or different behaviour among multiple related objectsWhen to use interfaces: to implement a contract by multiple unrelated objects in javaExplore scenarios where you might need to implement a custom Comparator for a class that already implements the Comparable interface. Provide real-world examples for context.Abstract classes and interfaces may be used interchangeably to specify the behavior of objects.How do you know whether you need an interface or an abstract class?