Identify the error in the following codes with explanation.1-class X{ //Class X Members }class Y{ //Class Y Members }class Z extends X, Y { //Class Z Members }2-class X { public X(int i){ System.out.println(1);class Y extends X {public Y() { System.out.println(2); } }3-public class A {public A(){System.out.println(1);System.out.println(2); } }super();4-public class A {public A() {super();this(10); }public A(int i) { System.out.println(i); } }

Disclaimer: “Since you have asked multiple questions, we will solve the first question for you. If…

Answered: Identify the error in the following…

Identify the error in the following codes with explanation. 1- class X { //Class X Members } class Y{ //Class Y Members } class Z extends X, Y { //Class Z Members }

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

See similar textbooks

Related questions

Q: I need help in True or False for following conditions in OOP URGENT True or False 1)…

A: Note:- You have posted multiple True/False problems, as per guideline we are required to provide…

Q: Inheritance, Polymporhism, and Dynamic Dispatch Please answer the following questions about type…

A: Inheritance---------when one object acquires all the properties and behaviours of parent object is…

Q: a) Given the following code segments: class MyClass { String name; double value; MyClass (String n,…

A: Immutable object means, an object whose state cannot be change after it's creation. To make an…

Q: C++ Implement a Rational Number class with the following specifications. Data members a)…

A: In this question we have to write a C++ program for implementing a Rational Number class in C++. The…

Q: Make the classes as mentioned above. Make appropriate constructors and functions. Choose access type…

A: The given problem is to be solved using the concept of Object-Oriented Programming where multiple…

Q: A class Student has Roll No, Branch, class Internal_exam has sub1marks, sub2 marks, class…

A: Given: A class Student has Roll No, Branch, class Internal_exam has sub1marks, sub2 marks, class…

Q: نقطة واحدة A base class is also known as class Inherited O Sub

Q: How should base-class data members be referenced and used from derived classes? The derived class…

A: In object-oriented programming, the relationship between base and derived classes is fundamental.…

Q: Suppose Chair is a class and c1 and c2 are objects of the Chair class. In order for the following…

A: new operator is used to allocate memory for an object and constructors are invoked while creating…

Q: Explain the different between class to basic type conversion and basic to clasS type conversion.

A: Type conversion means convert one data type to other data type. It can be done automatically or by…

Q: using c++

A: Note: First two parts are satisfied in the below program. Program: A C++ program for the criteria…

Q: Object Oriented Programming (Java): True or False Statements with one line reasoning: 1. The…

A: The statement is true or false with explanation is given below:

Q: 18. If a class is declared as final, the incorrect statement is (). A. Indicates that this class is…

A: as per our guidelines we are supposed to answer only one question. Kindly repost other questions as…

Q: An abstract class a. Cannot be used to declare pointers and references b. Has at least one pure…

A: EXPLANATION: An abstract class is basically the class that is declared as abstract during the time…

Q: hapter 9 defined the struct studentType to implement the basic properties of a student. Define the…

A: Terms used in the above question: struct(structure):- In C++, a structure is a type that the user…

Q: Fill-in-the-Blank A collection of abstract classes deﬁning an application in skeletal form is called…

A: Lets see the solution.

Q: T/F Example Code Ch 09-2Assume that Poodle is a derived class of Dog and that Dog d = new Dog(...)…

A: Please see the next step for solution.

Q: For this problem you are to join the following classes into a hierarchy (use the UML diagrams from…

A: Define a Person class with the following attributes: name (String), age (int), email (String) Define…

Q: For this problem you are to join the following classes into a hierarchy (use the UML diagrams from…

A: Define the Pet class with attributes name and age, and a method makeSound(). Define the Dog class…

Q: 1) Implement converter class hierarchy as follows: a. Converter class which includes:  Private…

A: Here's the solutrion The Java code is given below and Comments are used to include step-by-step…

Q: 5. Class for storing an Employee details.

A: Given: Class for storing employee details.

Q: c++ 1- Use UML notations to describe 4 or 5 related classes and their relationships. For each class,…

Q: 2) The following graphic is an example of a (an) class. a) structural b) inheritance c) polymorphism…

A: 2) The following graphic is an example of a (an) class. a) structural b) inheritance c) polymorphism…

Q: Three class definitions and a main function are given below: class X { public: }; class Y public X {…

A: In this question, it is asked to calculate the object and member variable's memory address with c++…

Q: Design simple domain in OOP using DART classes. a. Classes should have some attributes and methods…

A: In this question we have to implement a OOPs program using DART Classes with attributes and methods,…

Q: method of O self-refe subclas

A: The linked addressing method of accessing data is possible because of the class called the…

Q: T/F Example Code Ch 09-2 Assume that Poodle is a derived class of Dog and that Dog d = new Dog(...)…

A: True, even though p is not a dog it is legal.

Q: Differentiate these terms with minimum words. d) > and > e) Generalization and Specialization f)…

A: d) extend :: it adds multiple element as list to the end of list example :: a=[1,2,3],b=[4,5,6]…

Q: Overview The objective of this assignment is to demonstrate an ability to implement inheritance,…

A: #include <iostream> #include <cstdlib> #include <cctype> #include…

Q: 4) Which of the following codes is/are valid? Code 1: abstract class X { abstract void func1();…

A: Abstract class: In the Java programming language, an Abstract class is declared using the abstract…

Q: class A{ protected: int x, y; public: int z; }; class B: private A{ private: int a, b, c; public:

A: a) B have 6 data members. They are x,y,z,a,b,c b) No data members are visible in B. c) x,y,z,a,b,c…

Q: Declaring a function that is not a member of a class C as a(n) to C allows that function to access…

A: The above given question represents the Friend function so let us understand what is friend…

Q: An abstract class can only be instantiated if at least half of its methods are defined

A: The answer for the given statement is as follows:-

Q: Exercise 1. (60 pts) Implement the class Product as presented by the following UML diagram: Product…

A: Program Explanation: Import the Scanner class Define a class for product Declare the instance…

Q: Implement the following attribute: protected ChessBoard board; // the board it belongs to, default…

A: #include <iostream> #include <stdlib.h> class GamePiece { public:…

Q: Exercise L(60 pts) Implement the class Student as presented by the following UML. diagram: Student…

A: public class Student { private String name; private int id; private char gender; private String…

Q: 13) What is the purpose of polymorphism in Java? To provide encapsulation of data and methods To…

A: b) To allow objects of different classes to be treated as if they are of the same class. is the…

Q: 6) Class Circle is a subclass of Shape class; and the Circle class has one attribute for the radius…

A: public class Shape { private String color; public Shape(String color) { this.color…

Q: T/F 23) Abstract classes are typically defined at the bottom of a class hierarchy

A: Please find the answer to the above question below:

Q: Object Oriented Programming (Java): True or False Statements with one line reasoning: 1. The…

A: Inheritance is an important part of object-oriented programming. Inheritance is the mechanism in…

Q: Explain the use of super keyword in JAVA for calling constructor function of the parent class in a…

A: SUPER KEYWORD: The super keyword is basically the reference variable which is used in tha java…

Concept explainers

OOPs

In today's technology-driven world, computer programming skills are in high demand. The object-oriented programming (OOP) approach is very much useful while designing and maintaining software programs. Object-oriented programming (OOP) is a basic programming paradigm that almost every developer has used at some stage in their career.

Constructor

The easiest way to think of a constructor in object-oriented programming (OOP) languages is:

Question

Identify the error in the following codes with explanation.
1-
class X{ //Class X Members }
class Y{ //Class Y Members }
class Z extends X, Y { //Class Z Members }
2-
class X { public X(int i)
{ System.out.println(1);
class Y extends X {
public Y() { System.out.println(2); } }
3-
public class A {
public A()
{
System.out.println(1);
System.out.println(2); } }
super();
4-
public class A {
public A() {
super();
this(10); }
public A(int i) { System.out.println(i); } }

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Step by step

Solved in 2 steps

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, computer-science and related others by exploring similar questions and additional content below.

Similar questions

QUESTION 9 Explicit casting must be used when an object O is converted from sub class to super super class is converted from super class to subclass is converted from sub class to super class O is a superclass or a subclass
Need this answers urgently please. Thank you.
Implement a nested class composition relationship between any two class types from the following list: Advisor Вook Classroom Department Friend Grade School Student Teacher Tutor Write all necessary code for both classes to demonstrate a nested composition relationship including the following: a. one encapsulated data member for each class b. inline default constructor using constructor delegation for each class c. inline one-parameter constructor for each class d. inline accessors for all data members e. inline mutators for all data members
: Generalization is a type of class relationship. What do know about Generalization, and arrange followingclasses in Generalization relationship using proper UML notation? Crocodile, Reptile, Snake, Dog, Fish, SheepDog, Shark, Dolphin, Animal
3. (10) Given below is the CRC diagram for a Circle ADT. Give the class definition and function definitions for this ADT. Circle - int r // radius // Constructors + Circle( int ) // Mutator + void setR( int) II Accessors + int getR( ) + int area( )
Q2\B\ True or false ( answer three) 1- Abstract data types cannot be implemented in procedural languages such as C and Pascal. 2- Although methods and fields can be static, constructors cannot be static. 3- One problem with OOP when create a Class it can never be changed. 4- polymorphys im is extensively used in implementing inheritance.
1%V1 l 3G 50 Write the code in main to call function tostring(): package lab5; public class Lab5 { public static void main(String] args){ ) } class person{ private String name; public String getname(){ return name;} public void setname(String n){ name=n; } } class Employee extends person{ private int Employeeld; public int getEmployeeld(){return Employeeld;} public void setEmployeeld(int employeeld){ this.Employeeld=Employeeld; }} class faculty extends Employee{ private String rank; faculty(int Employeeld,String name,String rank) { super.setEmployeeld(Employeeld); super.setname(name); this.rank=rank; public String tosring({ return super.getname()+" "+super.getEmployeeld()+" "+this.rank; 88 التفاف النص أدوات لوحة المفاتيح
Object Oriented Programming OTHERS ACTIVITY 2 Answer the following questions to assess your learning for const keyword in classes Q1. If a class have a pointer as data member, then constant function of this class will make pointer as constant pointer or pointer to constant for that specific function? Answer: Reason: Q2. Can a non-constant member function of a class access constant data member of same class? Answer: Reason: Q3. Can a constant object call a non-constant member function of same class? Answer: Reason: Q4. Can a non-constant object call a constant member function of same class? Answer: Reason:
Overview Construct a hierarchy of classes representing savings and checking accounts as well as a means to ‘filter’ account objects. Account Classes Your solution will consist of 4 account classes as described below. It is your responsibility to define the exact relationship among those classes and translate that relationship into source code structure. There is a correct structure; the skeleton must be modified to reflect the correct relationships.  Account – represents a general account with basic operations such as deposit, withdraw, etc.  Savings – represents a savings account that must maintain a minimum balance.  Checking – represents a checking account that has no minimum balance (this means a zero balance).  CappedChecking – represents a checking account that disallows a balance above a particular maximum value. Linking Accounts A bank or credit typically allows a user the ability to link accounts together. That is, I might wish to link my checking account with my savings…
write the definition of a class statistics containing: three data members x, y, and z of type integer. a member function called setValues that accepts three parameters and assigns them to x, y, and z the function returns no value. a member function called getSum that accepts no parameters and returns the sum of the member variables x, y, and z. a member function called getAvg that accepts no parameters and returns the average of the member variables x, y, and z (the average should be returnsed as a double value. to do this you can use a convert function or just divide by 3.0) a member function called getMin that accepts no parameters and returns the smallest member variable. a member function called getMax that accepts no parameters and returns the largest member variable.
define a class person which has two data members. they are 1.pointer to character to store address of memory block to store name of person . 2. CNIC data member to store ID card number class person has also a constructor and distructor use class person as parent class and define child class student child class student has two data members. They are pointer to character and Roll no. NOTE that chaild class also has a constructor and distructor. In addition child class has two data member more member function to get data and display data. In main function , creat an object of class student and display information of student.
6 Java