Given the following interfaces: public interface Inter1 { public abstract void m10%3; public abstract void m20; public interface Inter2 extends Inter1 { public abstract void m30; public interface Inter3 extends Inter1 { public abstract void m40; If you are asked to define a concrete class caller
Q: What is the output of the following code? public interface finalExam { int x = 10; void…
A: The code snippet declares an interface finalExam with x=10 and two abstract methods finalMethod()…
Q: A subclass of an abstract class must implement all of the parent class's abstract methods. Is it…
A: When an abstract class is subclassed, the subclass usually provides implementations for all of the…
Q: Describe the advantages of using interfaces over abstract classes.
A: Programming: Programming is the methodology of framing a bunch of guidelines that guide a computer…
Q: In programming, there are two ways of creating classes, interfaces, and abstract classes. Contrast…
A: - The question is to know about the Differences in interface and abstract classes.
Q: Answer By True or False , JAVA LANGUAGE A Java interface can contain only constants and abstract…
A: Object oriented programming also abbreviated as OOPS as a programming pattern based on the concept…
Q: Explain the following Java Interface code in details. interface A { public void m1(); } abstract…
A: CODE :- interface A{public void m1();}abstract class B{public B(){System.out.println("Inside the…
Q: with an abstract method ‘fareCharged()’. $10, $15 and $20 are the fares charged by Bus, Auto and Cab…
A: Create an abstract class ‘Fares’ with an abstract method ‘fareCharged()’. $10, $15 and $20 are…
Q: Create an abstract class ‘Fares’ with an abstract method ‘fareCharged()’. $10, $15 and $20 are the…
A: Note: since programming languages is not specified. we are providing solution in java. please repost…
Q: An interface can have : instance variables. only method headings without implementation.…
A: Refer to step 2 for the answer.
Q: An abstract class can extend another abstract class and implement multiple interfaces.
A: Because Classes can only extend from one other class, but can implement multiple interfaces.
Q: To implement an interface, a concrete class must implement AT LEAST ONE of the method headers…
A: A concrete class is one in which all of its methods have been implemented. They can't have any…
Q: Define an interface Frame with methods paint, redraw and fields width, height, title. Provide…
A: Falls under Java Programming. To define an Interface Frame along with its methods and also show its…
Q: When should an abstract class be used, when should an interface be used, and when should both be…
A: According to the provided information: We need to define the use of an abstract class, interface…
Q: You can make a class abstract by declaring it with keyword abstract. An abstract class normally…
A: An abstract class is a class which can have 0 or more abstract methods An abstract class is declared…
Q: What is the output of the following code? public interface finalExam { int x = 10; void…
A: Hello student. Warm welcome from my side. Hope you are doing great. I will try my best to answer…
Q: lollowiing 1isw ic interface T1 { public static final int z =1; public abstract void q(); c…
A: 1. Yes both are correct both are working well static means that instead of each instance of the…
Q: Given the following definitions: public abstract class Manager extends Employee { ... } public class…
A: Introduction: Class is one of the concepts in the object-oriented programming paradigm and it’s…
Q: In Java 1. Can you have a variable of an interface type? Can you have a parameter of an interface…
A: Can you have a variable of an interface type? Can you have a parameter of an interface type?…
Q: A subclass of an abstract class is required to implement all of the abstract methods of the parent…
A: Abstract class :- Class that is declared abstract is known as abstract class it can have both…
Q: Given the following definitions: public abstract class Manager extends Employee { } public class…
A: Answer: We have explain some classes in java in brief explanation
Q: Modify the given codes to remove the compilation errors. 1. public interface Carnivore {…
A: Answer: Ans-1: The code will not compile and it will be given you the two compile-time errors…
Q: choose the right answer to overcome the error public abstract class LabFinalExam 3 { public static…
A:
Q: Describe one advantage of requiring a class to implement an interface.
A: Interface is a user-defined data type which consists of abstract methods. It is used when different…
Q: An abstract class's parent class's abstract methods must all be implemented by its subclasses. Is it…
A: Abstract class's parent class's abstract methods: An abstract class is a class that is declared…
Q: 1. A Java interface can contain only constants and abstract methods. 2. A class that implements an…
A: Java is a programming language. It contains extensive libraries (package). It can be used to create…
Q: public abstract class Landmark { public abstract int countVisitors(); } Consider the class shown…
A: Data Abstraction is an OOP concept that hides the background details. It shows only those…
Q: What is fundamental difference/s between an abstract classes and interface
A: Note- since you did not mention, we assume that you asked question in reference to java programming…
Q: Find the Error. interface DAO{ public double getMax(); public abstract double getAverage(); }…
A: In the above program we will get an error at double res=h.getMax(); this is because in human h=new…
Q: A subclass of an abstract class must implement all abstract methods of the parent class. True or…
A: A class that is declared using “abstract” keyword is called abstract class. It can have abstract…
Q: The top level class of creators in the abstract factory is a(n) Select one: O a. concrete class b.…
A: The top level class of creator in the abstract factory is a(n)
Q: To implement an interface, a concrete class must implement AT LEAST ONE method heading
A: The answer:
Q: An object can be created from an abstract class is it true or false
A: Ans : False that An object can be created from an abstract class.
Q: What is fundamental difference's between an abstract classes and interface (Write in maximum 5…
A: The answer has given below:
Q: An abstract class's parent class's abstract methods must all be implemented by its subclasses. Is it…
A: Abstract class is a restricted class that cannot be used to create objects.
Q: 1. Define an interface Measurable. It has a single abstract method: double getArea(); 2. Define an…
A: PROGRAM EXPLANATION: Create an interface Measurable. Declare an abstract method in this interface.…
Q: 4. public abstract class Test2 { private int x private int y; public abstract void display(); public…
A: Abstract class containing abstract method doesn't contain method body. Abstract class can't…
Q: In the following statement: public abstract class Vehicle extends DD implements Car{ ...} DD can…
A: The correct answer of the questions is option "TRUE"
Q: To implement an interface, a concrete class must implement AT LEAST ONE method headings listed in…
A: Required: To implement an interface, a concrete class must implement AT LEAST ONE method headings…
Q: 2. In a Java class, toString method is implicitly inherited from: Object class interface abstract…
A: toString() method is used to get string representation of object. It gives classname followed by a @…
Q: ds in an abstract class must be overriden and implemented classes only become useful when we create…
A: Answer is given below.
Q: What are the differences between abstract classes and interfaces?
A: Abstract class and interface both are utilized to accomplish deliberation where we can proclaim the…
Q: State a circumstance in which you would prefer an interface over an abstract class. Also, State a…
A: Since Interfaces doesn't exist in C++ but in Java, they do. in Java, I would use an interface when…
Q: Please define two interface Auto and Sprinkler, and three classes Car, Truck and FireTruck. Car and…
A: Code: interface Auto{ public abstract void move(); public abstract void stop(); public…
Q: public abstract class Landmark { public abstract int countVisitors(); Consider the class shown…
A: The answer is given below.
Q: This example asks you to write an interface. Then define three classes that implement this…
A: Program that defines three classes that implement the given interfaces in the question. Class: A…
Q: 1- public class Student { 2 3 public abstract double calcScore(); 4 5 } Which of the following is…
A: The given code is a java code snippet where a Student class is created. The student class has method…
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- Help me out with this java problem. Given partial codes of the Colored interface and Point class as the following: //Colored interface public interface Colored{ public String getColor(); } //Point class public class Point { private int x; private int y; public Point() { this(0, 0); } public Point(int x, int y) { setLocation(x, y); } public boolean equals(Object o) { if (o instanceof Point) { Point other = (Point) o; return x == other.x && y == other.y; } else { return false; } } public void setLocation(int x, int y) { this.x = x; this.y = y; } public String toString() { return "(" + x + ", " + y + ")"; } } Write ColoredPoint class, so that implements the Colored interface and extends Point so that Points have colors. Override toString method to print out the coordinates and color of the point, override the equals method…I need help creating a UML chart for this given Java abstract airplane class code below: public abstract class Airplane { private int numPassengers, numSeats, numStaff, price; private String name_record, model, color, type; private float speed, fuelCapacity; public abstract String getModel(); public abstract String getColor(); public abstract String getType(); public abstract float getSpeed(); public boolean isSeatAvailable() { return this.numPassengers < this.numSeats ? true : false; } public int numSeatAvailable() { return this.numSeats - this.numPassengers; } public int calculatePrice(int noPassenger) { return this.price * noPassenger; } public float calculateFuelCharge(float fuelPrice) { return this.fuelCapacity * fuelPrice; } }The primary focus of this assignment is the use of interfaces. In programming, an interface is a public avenue by which data can be accessed and/or manipulated. five Java classes called Point, Circle, Square, Rectangle, and TestAll, as well as a Java interface called FigureGeometry. The TestAll class should implement the main method which tests all of the other files Point.java Description: Instance Variables: private int width;//stores the width of a Point object private private int height;//stores the height of a Point object Constructor: Point() Parameters: int theWidth, int theHeight Purpose: initializes the width and height of a Point object in the following manner: width = theWidth; height = theHeight; Methods: public int getWidth(){//returns the width of a Point object in the following manner return width;} public int getHeight(){//returns the height of a Point object in the following manner: return height;} public void setWidth(int theWidth){//assigns the width of a Point…
- Use Netbeans to run the following decorator pattern code. Provide screenshot to prove that the code runs successfully. Design a UML class diagram to model the program and fully explain the class diagram. SpaceshipDetails.java: public interface SpaceshipDetails {void name(String name);void size(String size);void passengerCabin(int load, int unload);void laserGun(int c);void rangeFinder(int d);void hyperDriver(int dist);} EbonHawk.java: public class EbonHawk implements SpaceshipDetails {@Overridepublic void name(String name) {System.out.println("The name of the ship is: " + name);}@Overridepublic void size(String size) {System.out.println("The size of the ship Ebon Hawk is: " + size);}@Overridepublic void passengerCabin(int load, int unload) {System.out.println("Number of passengers to be loaded: " + load);System.out.println("Number of passengers to be unloaded: " + unload);}@Overridepublic void laserGun(int c) {if (c == 1) {System.out.println("The spaceship has a gun");}else…This is the question - An interface named SidedObject has been added that contains a method called displaySides(). Modify displaySides() so that it displays the number of sides the object possesses. Modify the GeometricFigure2 subclasses to include the use of the interface to display the number of sides of the figure. The displaySides() method in the Square2 class should output This figure has four sides. It should output This figure has three sides in the Triangle2 class. Code I was given - public abstract class GeometricFigure2 { protected int height; protected int width; protected String figure; public GeometricFigure2(int h, int w, String f) { // write your code here } public int getHeight() { // write your code here } public int getWidth() { // write your code here } public String getFigure() { // write your code here } public interface SidedObject { public void…Write a Program in Java Create an interface EnhancedShape that extends Shape and also requires a method public double perimeter( ) to be implemented by any class that uses the interface. (Note: Interfaces can inherit other interface just like a class by using extends keyword. Create a class file, an interface ehancedshape extends shape, and an interface shape file).
- In Java, which of the following is false? An abstract class may implement an interface. A class that contains an abstract method must be declared abstract itself or a compiler message will result. A class may implement multiple interfaces. A class that extends another class may implement only one interface.Say we have a collection of animal classes, with each class represents a kind of animal. They all share a common ability of “speak”. Dog speak in the way of “Woof! Woof!”, cats speak in the way of “Meow! Meow!”, etc. In order to capture this common characteristic, we need an interface named Speakable: public interface Speakable { // put the method header here } Think about what method is needed for the Speakable interface? (what method can describe the speakable feature? ) We simply need one method speak() to print out the way that the animal “speaks”. Put the method header in the interface body. This method does not take any parameter and does not return any value. Be reminded that you only need to put the method header with a semicolon (abstract method) into the interface. BE NOTED: Adding an interface is different from adding a class. You need to click File tab -> New -> Interface, to add an interface file to the project. Now download Cat.java. Have them implement the…Say we have a collection of animal classes, with each class represents a kind of animal. They all share a common ability of “speak”. Dog speak in the way of “Woof! Woof!”, cats speak in the way of “Meow! Meow!”, etc. In order to capture this common characteristic, we need an interface named Speakable: public interface Speakable { // put the method header here } Think about what method is needed for the Speakable interface? (what method can describe the speakable feature? ) We simply need one method speak() to print out the way that the animal “speaks”. Put the method header in the interface body. This method does not take any parameter and does not return any value. Be reminded that you only need to put the method header with a semicolon (abstract method) into the interface. BE NOTED: Adding an interface is different from adding a class. You need to click File tab -> New -> Interface, to add an interface file to the project. Now download Dog.java. Have them implement the…
- Explain the following Java Interface code in details.interface A{public void m1();}abstract class B{public B(){System.out.println("Inside the Constructor of class B");}abstract public void m2();}class C extends B implements A{public C(){System.out.println("Inside the Constructor of class C");}public void m1(){System.out.println("Inside m1 method");}public void m2(){System.out.println("Inside m2 method");}}public class InterafceAbstractTest{public static void main(String args[]){C c = new C();c.m1();c.m2();//A a = new A();B b;b=c;//b.m1();b.m2();A a;a=c;a.m1();//a.m2();}}Create an interface MessageDecoder that has a single abstract method decode(cipherText), where cipherText is the message to be decoded.The method will returnthe decoded message. Create a class SubstitutionCipher that implements the interface MessageDecoder as described above. The constructorshould have one parameter called shift. Define the method decode so that each letter is shifted by the value in the shif. For example, if shift is 3, a will be replaced by d, b will be replaced bt e, c will be replaced by f, and so on. Hint: You may wish to define a private methodthat shifts a single character. Create a class ShuffleCipher that implements the interface MessageDecoder. The constructor should haveone parameter called n. Define the method decode so that the message is shuffledn times.To perform one shuffle, split the message in half and then take the charactersfrom each half alternatively. For example, if the messsage is "abcdefghi", the halves are "abcde" and "fghi". The shuffled…FOR JAVA 1. Implement the following classes and interface in Java. Shape interface which has the following methods: – public double perimeter(); // doesn’t have any parameters, re- turns the perimeter of the shape. – public double area(); // doesn’t have any parameters, returns the area of the shape. – public void info(); // doesn’t have any parameters, prints the perimeter and area of the shape. Circle class that implements Shape interface and has a constructor that takes the radius. Rectangle class that implements the Shape interface and has a con- structor that takes the width and height. Square class that extends the Rectangle class and has a constructor that takes the edge length. – Square constructor should only call the super constructor with correct parameters. – Square constructor should not explicitly implement the Shape class, but it should inherit the perimeter, area and info methods from the Rectangle class. 2. Create a Test class, and create one…