public class Car {public void m1() {System.out.printla("car 1");}Create a client class and add the following statements.What is the output? Is it the same as you expected?Car mycar = new Car();Truck mytruck = new Truck();public void m2() {System.out.printia("car 2");}System.Qut.printlnlaxsarli // Output:mycar.m1();mycar.m2();System.out.printinlmxtruck); // Output:mytruck.m1();mytruck.m2();// Output:// Output:public String toString() {return "vroom";// Output:// Output:}}public class Truck extends Car {public void m1() {System.out.rrintl("truck 1");}}

PROGRAM CODE: class Car { public void m1() { System.out.println("car 1"); }…

public class Car { public void m1() { System.out.printin("car 1"); } Create a client class and add the following statements. What is the output? Is it the same as you expected? Car mycar = new Car(); Truck mytruck = new Truck(); %3D public void m2() { Svstem.out.println("car 2"); } System.out.printinlmucarl: // Output: mycar.m1(); mycar.m2(); Sustem.Qut.printlnlmxtruck); // Output: mytruck.m1(); mytruck.m2(); // Output: // Output: public String toString() { return "vroom"; // Output: // Output: } } public class Truck extends Car { public void m1() { Svstem.out.printia("truck 1"); } }

public class Car { public void m1() { System.out.printin("car 1"); } Create a client class and add the following statements. What is the output? Is it the same as you expected? Car mycar = new Car(); Truck mytruck = new Truck(); %3D public void m2() { Svstem.out.println("car 2"); } System.out.printinlmucarl: // Output: mycar.m1(); mycar.m2(); Sustem.Qut.printlnlmxtruck); // Output: mytruck.m1(); mytruck.m2(); // Output: // Output: public String toString() { return "vroom"; // Output: // Output: } } public class Truck extends Car { public void m1() { Svstem.out.printia("truck 1"); } }

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

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8
What is the output of the following code? Convert the abstract class into an interface and modify the codes in all classes that will maintain the same output. (Rewrite the code)
class smart { public: void print() const; void set(int, int); int sum(); smart(); smart(int, int); private: int x; int y; int secret(); }; class superSmart: public smart { public: void print() const; void set(int, int, int); int manipulate(); superSmart(); superSmart(int, int, int); private: int z; }; Now answer the following questions: a. Which private members, if any, of smart are public members of superSmart? b. Which members, functions, and/or data of the class smart are directly accessible in class superSmart?
How to expplain this pseudo code? START Public Class BankingSystem Declarations string accname double balance = 0 int pin, userpin, newpin void create() void dispbalance() void withdraw() void pinchange() void deposit()EndClass void BankingSystem::create print “Enter Your Name: ” Cin.ignore Getline(cin, accname) print “Enter Your Pin: “ Input user pin Void BankingSystem::pinchange print “Input old Pin: “ Input userpin If (pin == userpin) print “Enter new pin: “ Input newpin pin = newpin print “Your pin was successfully changed” Else print “Please re-enter old pin” void BankingSystem::dispbalance print “Enter your pin: “ Input userpin If (pin == userpin) print “This…
Given the following class: class bookType { public: void setBookTitle(string s); //sets the bookTitle to s void setBookISBN(string ISBN); //sets the private member bookISBN to the parameter void setBookPrice(double cost); //sets the private member bookPrice to cost void setCopiesInStock(int noOfCopies); //sets the private member copiesInStock to noOfCopies void printInfo() const; //prints the bookTitle, bookISBN, the bookPrice and the copiesInStock string getBookISBN() const; //returns the bookISBN double getBookPrice() const; //returns the bookPrice int showQuantityInStock() const; //returns the quantity in stock void updateQuantity(int addBooks); // adds addBooks to the quantityInStock, so that the quantity // in stock now has it original value plus the parameter sent to this function private: string bookName; string…
java code Problem : Bank Account Details Super Class : Account Attributes : customerid , customerame , balance , account Methods : 1-Read the account details 2-Display the Account details Sub class : Bank Attributes : deposit amount , withdraw the amount Methods : 1-Set the deposit amount and return the deposit amount 2-Set the withdraw amount and return the withdraw the amount 4- Display the Bank details
package population.java; /**** @author HP Laptop*/public class PopulationJava { private static double Mexico = 128.0;//initial population of Mexico in millionprivate static final double Mexico_growth_rate=1.01;//population increase by this rate every yearprivate static final double UnitedStates=323.0;//initial population of United States in millionprivate static final double US_growth_rate=-0.15;//negative growth rate each yearprivate static int count=0;//variable to hold number of years taken//main method to run the program public static void main(Stringargs[]){//print header for outputStrings = String.format("%s%12s%22s","Year","Mexico","United States");//formating string for outputSystem.out.printIn(s); while(true){//print out the population for current year print(count,Mexico,UnitedStates);//check if population of Mexico exceeds that of the United Statesif(Mexico>UnitedStates){//break the loop as condition for program ending are metbreak;}else{//calculate Mexico's…
public class DesertEvent { private static int eventCount = 0; private String barCode; private String location; private String eventName; private String eventType; private int quantity; private int capacity; private int seatsTaken; public DesertEvent(String eventName, String eventType) { this(eventName, eventType, 0); calcMaximumSeats(eventType); generateBarCode(); } public DesertEvent(String eventName, String eventType, int capacity) { this.eventName = eventName; this.eventType = eventType; this.capacity = capacity; generateBarCode(); eventCount++; } public String getBarCode() { return barCode; } public String getLocation() { return location; } public String getEventName() { return eventName; } public String getEventType() { return eventType; } public int getQuantity() { return quantity; } public void setQuantity(int quantity) { this.quantity = quantity; } public int getCapacity() { return capacity; } public void setCapacity(int capacity) { this.capacity = capacity;…
InheritanceDemo.java: // StudentName Today's Date public class InheritanceDemo { public static void main(String[] args) { KleenexBox kb1 = new KleenexBox(); KleenexBox kb2 = new KleenexBox(100); Box justABox = new Box(); System.out.println("justABox has area " + BoxArea(justABox)); System.out.println("kb1 has area " + BoxArea(kb1)); System.out.println("kb2 has this many square inches of tissue: " + KleenexArea(kb2)); } public static double BoxArea (Box b) { return b.width * b.length; } public static double KleenexArea (KleenexBox a) { return a.width * a.length * a.numTissues; } } Box.java: // Student Name Today's Date public class Box { public double width; public double length; public String label; } KleenexBox.java: // Student's Name Today's Date public class KleenexBox extends Box { public int numTissues; // A new Kleenex box public KleenexBox() { numTissues = 50; length = 8.0; width = 5.0; } // A new Kleenex box with a specific number of tissues public…
class IndexItem { public: virtual int count() = 0; virtual void display()= 0; };class Book : public IndexItem { private: string title; string author; public: Book(string title, string author): title(title), author(author){} virtual int count(){ return 1; } virtual void display(){ /* YOU DO NOT NEED TO IMPLEMENT THIS FUNCTION */ } };class Category: public IndexItem { private: /* fill in the private member variables for the Category class below */ ? int count; public: Category(string name, string code): name(name), code(code){} /* Implement the count function below. Consider the use of the function as depicted in main() */ ? /* Implement the add function which fills the category with contents below. Consider the use of the function as depicted in main() */ ? virtualvoiddisplay(){ /* YOU DO NOT NEED TO IMPLEMENT THIS FUNCTION */ } };
class Param5 { private int a, b; public Param5() { b = 2; } public void method1(int b) { a = this.b + 5; System.out.println(a); // what is the output here? a = method2(b); System.out.println(a); // what is the output here? System.out.println(this.b); // what is the output here ? } public int method2(int a) { b = 2 + a; return this.a + b; } Param5 q5 = new Param5(); } q5.method1(3); I want to know each output please with explanation .. the code has no errors
package go; package demo; public class Pokemon { import ; // import Pokemon class (#1) private int hitPoints; static int population; public class Main { public static void main(String[] args) { void attack() { // implementation this.evolve(); } public void evolve() { // implementation } } Pokemon pika = new Pokemon(); pika.hitPoints = 30; (#2) System.out.print(Pokemon.population);(#3) pika.attack(); (#4) pika.evolve(); (#5) } 1. How can we retrieve the value of hitPoints without allowing any other class to change its value? a) Change the access modifier of bitPoints to public b) Change the access modifier of hitPoints to default c) Make the hitPoints a static attribute d) Declare a new public method, say şetHitPoints(int value), that sets the value of hitPoints e) None of the above