public class Shape { Color fillColor; } public Shape() } fill Color = Color. RED; } public Shape(Color fillColor) { this.fill Color = fillColor; } public class Circle extends Shape { int radius; public Circle() { radius = 1; } public Circle(int radius) { this.radius = radius; } public Circle(int radius, Color fillColor) { } super (fillColor); this.radius = radius; Circle c1= new Circle(); Circle c2 = new Circle(5); Circle c3 = new Circle(10, Color.BLUE); Which of the following are correct? c2 has radius 5 c1 is red c2 is red c3 has radius 10 c3 has radius 1 c3 is red c1 is blue ✓c2 has radius 10 c3 is blue c1 has radius 5 c1 has radius 1 c2 has radius 1 c2 is blue

public class Shape { Color fillColor; } public Shape() } fill Color = Color. RED; } public Shape(Color fillColor) { this.fill Color = fillColor; } public class Circle extends Shape { int radius; public Circle() { radius = 1; } public Circle(int radius) { this.radius = radius; } public Circle(int radius, Color fillColor) { } super (fillColor); this.radius = radius; Circle c1= new Circle(); Circle c2 = new Circle(5); Circle c3 = new Circle(10, Color.BLUE); Which of the following are correct? c2 has radius 5 c1 is red c2 is red c3 has radius 10 c3 has radius 1 c3 is red c1 is blue ✓c2 has radius 10 c3 is blue c1 has radius 5 c1 has radius 1 c2 has radius 1 c2 is blue

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

Similar questions

JAVAFX: Allowed functions for drawing (Ellipse2D,CubicCurve,QuadCurve,Arc2D) [draw all of these shapes please] ID ended with 0.1 ID ended with 2.3 ID ended with 4,5 ID ended with 6.7
public class App { public static String convertToUpperCase(String str) { return result; } public static String convertToLowerCase(String str) { return result; } public static int lengthOfString(String str){ return result; } public static int indexOfWord(String str, String word){ return result; } public static String removeFirstCharOccurrence(String str, char c){ return result; } public static String replaceString(String str, String w1, String w2){ return result; } public static int compareStrings(String s1, String s2){ return result; } public static void main( String[] args ) { String str = ""; System.out.println( "Welcome to Lab 3" ); Scanner keyboard = new Scanner(System.in); System.out.println( "Enter a string then press enter:" ); str = keyboard.nextLine();…
Write single and multiline comments to clarify the code public class Image {int numberOfPhotos;double fStop;int iso;int filterNumber;String subjectMatter;String color;String location;boolean isblurry;public String looksBlurry(boolean key){if ( key == true){return "Photo is Blurry";}else{return "Photo is Clear";}}public void printPhotoDetails (){System.out.println("----------------------------------");System.out.println("Printing details of current photo:");System.out.println("----------------------------------");System.out.println("This is a/an " + subjectMatter +"roll:" + "in: " + color + "using filter: "+ filterNumber + ".");System.out.println("It has " + numberOfPhotos + "photos with " + fStop + "fStop." );System.out.println("This photo was taken near the"+ location + "with film at: " + iso + "ISO:"+ ".");if (isblurry == true){System.out.println("You can post it.");}else {System.out.println("You should post it.");}}}
1. Dummy GUI Application by Codechum Admin A GUI Application is an application that has a user interface that the user can interact with. For this program, we will be simulating this behavior. First, implement another class called Checkbox which implements the Clickable interface which has only one method: public void click(). The Checkbox will have the following properties: private boolean isChecked (defaults to false upon the creation of object) private String text Additionally, it should have the following methods: the implementation of the click() method If the isChecked is currently false, this will set the isChecked to true and will then print the message "Checkbox is checked". If it is currently true, this will set the isChecked to false and will then print the message "Checkbox is unchecked". Note that the messages to be printed should have also print a new line at the end. an override of the toString() method which returns the message: "Checkbox ({text} - Clicked…
class Player { protected: string name; double weight; double height; public: Player(string n, double w, double h) { name = n; weight = w; height = h; } string getName() const { return name; } virtual void printStats() const = 0; }; class BasketballPlayer : public Player { private: int fieldgoals; int attempts; public: BasketballPlayer(string n, double w, double h, int fg, int a) : Player(n, w, h) { fieldgoals = fg; attempts = a; } void printStats() const { cout << name << endl; cout << "Weight: " << weight; cout << " Height: " << height << endl; cout << "FG: " << fieldgoals; cout << " attempts: " << attempts; cout << " Pct: " << (double) fieldgoals / attempts << endl; } }; a. What does = 0 after function printStats() do? b. Would the following line in main() compile: Player p; -- why or why not? c. Could…
Consider the following class:1 public class Student {2 private int studentNumber;3 private Student labPartner;4 private static Student classPres = null;5 private static int nextStudentNumber = 100;67 public Student () {8 this.studentNumber = Student.nextStudentNumber;9 Student.nextStudentNumber ++;10 this.labPartner = null;11 }1213 public void setLabPartner (Student labPartner) {14 this.labPartner = labPartner;15 }1617 public static void setClassPres (Student pres) {18 Student.classPres = pres;19 }20 }(a) Write code that is able to construct an array of 1000 student objects and loads them in increasingstudent number order into that array. The lab partners of these students should all be null. TheclassPres should also be null.
Question 1 public class Flat { private int noOfRooms; private double area; private boolean seaView; public Flat() { noOfRooms = 3; area = 200; seaView = true; } %3D public void setFlat(int n, double a, boolean s) { noOfRooms = n; area = a; seaView = s; } public int getNoOfRooms( ) { return noOfRooms; } public double getArea( ) { return area; } public boolean getSeaView( ) { return seaView; } } Write a static method named findFlats that takes as a parameter an array of type Flat named list. The method should count and return the number of flats that have 3 or more rooms and with a sea view. The method prototype is: public static int findFlats (Flat[] list); Note: assume the array is already declared, populated with data in the main method and ready to be used.
public class LLNode{ private Name name; private LLNode next; public LLNode(){ name=null; next=null; } public LLNode(Name name, LLNode next){ setName(name); setNext(next); } public Name getName(){ return name; } public LLNode getNext(){ return next; } public void setName(Name name){ this.name = name; } public void setNext(LLNode next){ this.next = next; } } ******************************************************************public class Name implements Comparable<Name>{ private String firstName; private String lastName; public Name(String firstName, String lastName){ setFirstName(firstName); setLastName(lastName); } public String getFirstName(){ return firstName; } public String getLastName(){ return lastName; } public void setFirstName(String firstName){ this.firstName = firstName; } public void setLastName(String lastName){ this.lastName = lastName;…
2. Complete the application below. public class CarApp { public static void main() { string color = blue; string model = C2021;i int speed 80; %3D // declare necessary object matching to the constructor definition // display the color and model on the screen // call the calspeed) method and display the new speed after calculation. } }
I have the following code: public class Length{private int feet;private int inches;// Your code goes here Length(){feet = inches = 0;} Length(int newFeet, int newInches){feet = newFeet;inches = newInches;} public int getFeet() { return feet; }public void setFeet(int newFeet) { feet = newFeet; } public int getInches() { return inches; }public void setInches(int newInches) { inches = newInches; } public Length add(Length otherLength){int newFeet = feet + otherLength.feet;int newInches = inches + otherLength.inches; if(newInches >= 12){newFeet++;newInches -= 12;} return (new Length(newFeet,newInches));} public Length subtract(Length otherLength){if(this.feet > otherLength.feet){int newFeet = feet - otherLength.feet;int newInches = inches - otherLength.inches;if(newInches < 0){newFeet--;newInches += 12;} return (new Length(newFeet,newInches));}else{int newFeet = otherLength.feet - feet;int newInches = otherLength.inches - inches;if(newInches < 0){newFeet--;newInches += 12;}…
Class Phone{ bool wired() string ageOfInnovation() } Class CellPhone extends Phone{ bool wired(){ return false; } string ageOfInnovation(){ return "1970's" } int thickness(){ return 0; } } Class SmartPhone extends CellPhone{ bool wired(){ return false; } string ageOfInnovation(){ return "1990's" } string popularlyCalled(){ return "mobile" } string mainFeature(){ return "Internet Capability"; } }
public class Artwork { // TODO: Declare private fields - title, yearCreated // TODO: Declare private field artist of type Artist // TODO: Define default constructor // TODO: Define get methods: getTitle(), getYearCreated() // TODO: Define second constructor to initialize // private fields (title, yearCreated, artist) // TODO: Define printInfo() method // Call the printInfo() method in Artist.java to print an artist's information }} public class ArtworkLabel { public static void main(String[] args) { Scanner scnr = new Scanner(System.in); String userTitle, userArtistName; int yearCreated, userBirthYear, userDeathYear; userArtistName = scnr.nextLine(); userBirthYear = scnr.nextInt(); scnr.nextLine(); userDeathYear = scnr.nextInt(); scnr.nextLine(); userTitle = scnr.nextLine(); yearCreated =…