Show the output of running the class Test in the following code lines: interface A { } class C{ } class D extends C{ } class B extends D implements A { } public class Test { public static void main(String[] args) { Bb. = new B(); if (b instanceof A) System.out.println("b is an instance of A"); if (b instanceof C) System.out.printin("b is an instance of C"); } }
Q: Can you implement the Derived Class Parameterized constructor? A solution is placed in the…
A: In class Laptop we already have the constructor and thus in derived class we have to invoke the same…
Q: Consider public class MyClass { public MyClass(){/code/} // more code… } To instantiate MyClass, you…
A: Given Code: public class MyClass { public MyClass() { /code/ } // more code… } Answer: MyClass mc =…
Q: What will be the output of the following code? interface Test { int x = 10; } public class MyClass…
A:
Q: 2. What is the output of the following code? Can the class implement multiple interfaces? interface…
A: The Output is:- 10 20 30
Q: I am trying to practice Java Programming and would like to see and example of a program so I can…
A: A class is a group of objects which have common properties. A constructor is a method that is used…
Q: Suppose the class SportsCar is a derived class of a class Automobile,and suppose also that the class…
A: PARENT CLASS: Automobile Methods: accelerate, addGas DERIVED CLASS: SportsCar
Q: The following is the first line of the copy constructor definition for theclass PFArrayD. The…
A: The first is the class variable PFArrayD. This is the name of the class PFArrayD. Second is the…
Q: Show the expected output of the following program: package ch09.apps; import ch09.priorityQueues. *;…
A: See the expected output for above code in second step.
Q: I am trying to practice Java Programming and would like to see and example of a program so I can…
A: Subject 1 Explanation toString() method converts the object to a string. equals() method will…
Q: QUESTION 31 What is the output of running class Test? public class FinalExam { public static void…
A: Answer: B. ywvz
Q: Consider the following inheritance hierarchy: class A{ protected: int x, y; public: int z; };…
A: A) Class B has inherited class A privately. Thus all the protected data member of A will be…
Q: QUESTION 13 In the following code turn is an example of a ---[a ]---- method. public class Machine {…
A: In this code use the method overloading. Here we explain all the code separately. public class…
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: 2. What is the output of the following code? Can the class implement multiple interfaces? interface…
A: Given that the Java code it can be example of the interfaces, and multiple interfcaes.
Q: Write is the output of the following program with explanation? interface A { } class C
A: interface A { } Interface is called as blueprint of a class by default all the methods are abstract…
Q: You are given the following class definition for an array-based List ADT: public abstract class List…
A: Code: import java.util.Scanner; abstract class List{ protected int[] m_array; protected int…
Q: Assume static method printGenericCollection(c) prints the contents of a given object c that has type…
A: The following solutions are
Q: Subject : object Orieted Programming Q: Find the error in the following given codes and rewrite.…
A: Some key point to note:- In an interface, you can only method declaration not the definition (body)…
Q: Develop a java program to define an Symbol table class so that each symbol is associated with a…
A: JAVA is a object oriented programming language. It is a collection of classes and it is a high level…
Q: Predict the output of the following code: public class MyClass extends Test { public static void…
A: working: The code is used to print the value of the method num() present in the classes Test and…
Q: Imagine a generic class: public class Example { /* large body */ } What can be used as X when…
A: A Generic class, means that the items or functions in that class can be generalized with the…
Q: nterface in Java. Tru
A: Solution - In the given question, we have to tell whether the given statement is true or false.
Q: Create the class DynamicArrayOfStrings that implements the following two interfaces
A: Write a program that has the class DynamicArrayOfStrings that implements the following two…
Q: Write a class called Quadratic, which implements a quadratic polynomial with integer coefficients.…
A: Formula to calculate roots of a quadratic equation: x1 = -b + b2 - 4ac2ax2 = -b - b2 - 4ac2a
Q: the following java code, the correct description of the usage of "super" is (). class Student…
A: class Student extends Person{ public Student(){ super(); }}
Q: Suppose we define a method as follows: public void foo(List input) { } Which of the following do we…
A: Dear learner, hope you are doing well , I will try my best to answer this question. Thank You!!
Q: How can I write the repeating code just once in Python class subclass inheritance? For example…
A: We have to rewrite the given code using python class inheritance. Explanation: class Item() is a…
Q: Consider classes as given below. What does o.m(3) return, assuming o has static type A and dynamic…
A: Here is the explanation about the program:
Q: In Java, Test file(Test.java) package for_vehicles; public class Test { public…
A: Given The answer is given below.
Q: what is the output of the following codes : code 1. class A { {…
A: code1: //lets trace the code for outputclass A { { System.out.print(1);//this prints 1…
Q: (b) Are the following interfaces both correct? Explain your answer. public interface T1 { public…
A: The compiler of the java code will add public and abstract keywords before the function of an…
Q: What will be the output of the following code? interface Test { int x = 10; } public class MyClass…
A: Given, Java code: interface Test {int x = 10;}public class MyClass implements Test{public void…
Q: class A {protected int x1,y1,z; public: A(a, b,c):x1(a+2),yl(b-1),z(c+2) { for(i=0; i<5;j++) x1++;…
A: Answer: x1 -> 11, y1 -> 2 and z -> 8 See below step for explanation.
Q: I am trying to practice Java Programming and would like to see and example of a program so I can…
A: Inheritance is OOP concept where one class inherits all the methods and properties of another class.…
Q: Given the definition of the Person and Student classes below, public class Person{ public String m…
A: According to the information given:- We have to find the appropriate choose .
Q: - Write java program based on the following UML. - Add setter and getter for all data fields in all…
A: UML stands for Unified Modeling Language. It is used for modeling or representing the java classes…
Q: 2. In the code below, classes A and B are in the same package. If the question marks are replaced by…
A: There are four access modifiers in Java Private: The access level of this modifier is only within…
Q: Q13: In the following code, the classes A and B are in different packages. If the question marks in…
A:
Q: Suppose class B is derived from class A, and class C is derived from class B. In other words, we…
A: Child class variables can use parent class objects. However, parent class variables cannot utilize…
Q: 5). What will be the output of the following code? interface Test { int x = 10; } public class…
A: Answer:-(C) compilation error
Q: The following code segment is an example of public int min(int a, int b, int c) {. } public int…
A: When a method shows many forms then it is called as polymorphism. It has two types compile time and…
Q: Does below code compile successfully? If not, why? interface A { int i = 111; } class B implements A…
A: To find: To identify whether the given code will compile or not and to explain the reason for the…
Q: Say I create a superclass Bird, a subclass Parrot extends Bird, and a subclass Parakeet extends…
A: Above in the method public static void printName(Bird b) we are passing object of class Parakeet and…
Q: Use Netbeans to run the following decorator pattern code. Provide screenshot to prove that the code…
A: The given program cannot be executed as it does not contain the "main()" method like "public static…
Q: Can help with this in c++ The base class is given Base: class Base { int a; double b; public:…
A: The main objective of the program is to create a subclass of the base class called named "Derived".…
Q: 3. Consider the following two classes and write down the output of the following code: abstract…
A: Given data, Consider the following two classes and write down the output of the following code:…
JAVA
Trending now
This is a popular solution!
Step by step
Solved in 2 steps with 1 images
- The following is in Java: public class MyClass { private int x; private double y; public static void setValues(int a, double b) { x = a; y = b; } } 1) What is the problem? 2) In a few sentences how can the issue be fixed?How can I write the repeating code just once in Python class subclass inheritance? For example there is a code that the same self._date = date is repeating for every class, please write down the possible ways to not repeat the same line of code that influences for all classes. class Item(): def __init__(self, date):self._date = date class Book(Item):def __init__(self, date):self._date = date class Pen(Item): def __init__(self, date):self._date = dateConsider the following inheritance hierarchy: class A{ protected: int x, y; public: int z; }; class B: private A{ private: int a, b, c; public: void set(int x, int y, int z, int a, int b, int c); }; Int main(){ Aobja; B objb; } questions:a) How many data members does B have? Write their names. b) How many of B’s data members are visible in B? Write down their names. c) Which members of B are accessible in main()? How will they be accessed? d) If the protected Access specifier in A is changed to public, then how many members of B will be accessed in main() and how? e) Define the function set() without changing its signature as given above. f) Write a default constructor for the class B that does not have an empty parameter list. g) If the data members of A become private, then how they be initialized? h) Add a static data member in class B. Can we use this pointer with static members? If yes how?
- Please implement in Java implement a keyed bag in which the items to be stored are strings (perhaps people’s names) and the keys are numbers (perhaps Social Security or other identification numbers). So, the in- sertion method has this specification: public void insert(String entry, int key);// Precondition: size( ) < CAPACITY, and the // bag does not yet contain any item// with the given key.// Postcondition: A new copy of entry has// been added to the bag, with the given key. When the programmer wants to remove or retrieve an item from a keyed bag, the key of the item must be specified rather than the item itself. The keyed bag should also have a boolean method that can be used to determine whether the bag has an item with a specified key. In a keyed bag, the pro- grammer using the class specifies a particular key when an item is inserted. Here’s an implementation idea: A keyed bag can have two private arrays, one that holds the string data and one that holds the corresponding…class B extends A {} is the correct way to implement an interface in Java. True or False?WITE JAVA CODE JUST TO THE GIVEN CODE BELOW! TESTS GIVE ERROR FOR SHRINK AND add remove 100 values ALSO, DO IT BY CHECKING THE MAIN CLASS WITHOUT CHANGING IT class Queue<T> { private T[] a = (T[]) new Object[1]; private int N = 0; public boolean isEmpty() { return N == 0; } public int size() { return N; } private void resize(int capacity) { T[] temp = (T[]) new Object[capacity]; for (int i = 0; i < N; i++) { temp[i] = a[i]; } a = temp; } public void enqueue(T item) { if (N == a.length) resize(2*a.length); a[N++] = item; } public T dequeue() { T item = a[--N]; a[N] = null; if (N > 0 && N == a.length/4) resize(a.length/2); return item; } // this method is for unit testing; don't touch public int getArraySize(){ return a.length; }} public class Main { public static void main(String[] args) { Queue<Integer> myQueue = new Queue<Integer>(); int i; i = 1; myQueue.enqueue(i);…
- Please write a Java program with at least two classes. Use a circle to represent it! The class should have at least one non-static setter method and one non-static getter. Implement at least one method test that invokes the setter method and the corresponding getter method so that the value out == the value in!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();}}Write a Java program with least two classes. Using the circle object to represent it. The class must have at least one (non-static) setter method and one (non-static) getter method. Implement at least on test that invokes the setter and getter method and the corresponding getter method so that the value out == the the value in
- Design a Java class named LinearEquation for a 2-by-2 system of linear equations:ax + by = e x=(ed-bf)/(ad-bc)cx + dy = f y=(af-ec)/(ad-bc) The class contains:• Private double data fields a, b, c, d, e, and f.• A constructor with the arguments for a, b, c, d, e, and f.• Six getter methods for a, b, c, d, e, and f.• Methods getX() and getY() that return the solution for the equation.• A method named isSolvable() that returns true if ad - bc is not 0. The method isSolvable() willbe called in the main, if it returns true display the calculated values for x and y by calling getX()and getY(). If the call to isSolvable() returns false, display a message that “the equation has nosolution”. Write a Java program that prompts the user to enter a, b, c, d, e, and f and displays the result. After the valuesfor a through f are entered, create a LinearEquation object. Check to seeIf ad - bc is 0, report that “The equation has no solution”, otherwise print out the values for x and y.We have a parking office class for an object-oriented parking management system using java Add(implement) a method to the Parking Office class to return the collection of permit ids for a specific customer (getPermitIds(Customer)) using java I have attached two class diagrams with definitions of all related classes in our system (i.e car, customer, .....). N.B. Parking office methods in the class definition like register, getcustomer and addcharge have already been implemented, we just need an additional getPermitIds(Customer) method as mentioned above Explain your code in a few words Important- We have a method to return a collection of permit ids (getPermitIds), what we need is a method to return the collection of permit ids for a specific customer (getPermitIds(Customer))Python: implement a class called point, the class contains two values of a type of integer (x and y). Define both as private. Add the following to the class: 1. Default initializer, used to create objects of type Point, by default x and y are set to 1. 2. Initializer with two parameters for x and y. 3. Set and get methods for x 4. Set and get methods for y 5. Method __str__, which returns a string that represent the Point(e.g., p = [4,5])