a)
Method reference:
It is the reference for method execution and shorthand syntax for method definition.
Anonymous inner class:
An inner class is defined inside another class without a class name is known as anonymous inner class.
Lambda expression:
It is an expression to primarily define inline implementation of function. The symbol (->) used to define lambda expression.
b)
Method reference:
It is the reference for method execution and shorthand syntax for method definition.
Anonymous inner class:
An inner class is defined inside another class without a class name is known as anonymous inner class.
Lambda expression:
It is an expression to primarily define inline implementation of function. The symbol (->) used to define lambda expression.
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Instructor Solutions Manual For Introduction To Java Programming And Data Structures, Comprehensive Version, 11th Edition
- Build and run a program using C# generic indexer and operator overloading. Make the class name Pet. Aside from name and age, include petKind (for Cat, Dog, Mouse, etc.) and petSound (for Meow, Woof, Squirk, etc.). The revised output follows (NOTE: implement the overloaded *, /, +, or - whichever is appropriate in computing human-to-pet age conversion): Pet: CAT Name: Ming-ming Age: 2 Ming-ming says 'meow' Owner's Nickname: Harry Age: 20 Harry, by the power of my magic wand you will become Ming-ming. Using human-to-cat age ratio, you are now 1 year and 8 months old. Pet: DOG Name: Bob Age: 3 Bob says 'woof Owner's Nickname: Mikka Age: 25 Mikka, by the power of my magic wand you will become Bob. Using human-to-dog age ratio, you are now 5 years old. (and so on...) THANK YOU PET LOVERS!!!arrow_forward*using java* Create a class AnimalCreate a class Cat, and a class Dog, and a class Bearded Dragon which extend Animal. Add to your Animal class: Member: name Methods: Public Animal(String name) //constructor public void makesSound()with the implementation printing out a generic animal sound. Next, override (add) the makesSound()method to your Cat and Dog class, with the implementation specific to each animal (i.e, cat says purr..). Do not override the makesSound() for your Dragon (bearded dragons don’t make sounds!)Note, you’ll also need a constructor in each of your subclasses which calls super(name) to initialize the common ‘name’ member of Animal. --- Next (in your test harness) create a List of different Animals ( a couple cats, a dog, a dragon... ) and add these Animals to your list. Iterate through your list & call makeSound on each. ( you should observe the implementation of the makeSound() method called will be: cat -> from Cat class, dog-> from Dog class,…arrow_forwardIt is often the case that two or more classes share a common set of methods. For programming purposes we might wish to treat the objects of those classes in a similar way by invoking some of their common routines.For example, the Dog and Cat classes listed below agree on the void method speak. Because Dog and Cat objects have the ability to “speak,” it is natural to think of putting both types of objects in an ArrayList and invoking speak on every object in the list. Is this possible? Certainly we could create an ArrayList of Dog that would hold all the Dog objects, but can we then add a Cat object to an ArrayList of Dog?Try running the main program below as it is written. Run it a second time after uncommenting the line that instantiates a Cat object and tries to add it to the ArrayList. import java.util.*;public class AnimalRunner{ public static void main(String[] args) { ArrayList<Dog> dogcatList = new ArrayList<Dog>(); dogcatList.add(new Dog("Fred"));…arrow_forward
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