QUESTION 3What is the output of the following code?public class printMe {public static void main(String[] args) {int[][] 2DArray ={{6, 7, 8, 9},{9, 10, 11, 12},{13, 14, 15, 16},{17, 18, 19, 20}};for (int i = 0; i < 4; i++){}System.out.print(2DArray[1][i] + " ");67899 12 16 209 10 11 12O 6 9 13 17QUESTION 4InheritanceDefine a superclass and a subclass? Provide an example for a superclass and its subclass.PFor the toolbar, press ALT+F10 (PC) or ALT+FN+F10 (Mac).BIUSParagraphArial10pt!!!Al

Your answer is given below as you required with an explanation.

QUESTION 3 What is the output of the following code? public class printMe { } public static void main(String[] args) { int[][] 2DArray = {{6, 7, 8, 9), {9, 10, 11, 12), (13, 14, 15, 16), {17, 18, 19, 20}}; for (int i = 0; i < 4; i++){ مر مر System.out.print(2DArray[1][i] + " "); O 6789 O 9 12 16 20 O 9 10 11 12 O 69 13 17 QUESTION 4 Inheritance Define a superclass and a subclass? Provide an example for a superclass and its subclass.

QUESTION 3 What is the output of the following code? public class printMe { } public static void main(String[] args) { int[][] 2DArray = {{6, 7, 8, 9), {9, 10, 11, 12), (13, 14, 15, 16), {17, 18, 19, 20}}; for (int i = 0; i < 4; i++){ مر مر System.out.print(2DArray[1][i] + " "); O 6789 O 9 12 16 20 O 9 10 11 12 O 69 13 17 QUESTION 4 Inheritance Define a superclass and a subclass? Provide an example for a superclass and its subclass.

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

In Java, Test file(Test.java) package for_vehicles; public class Test { public static void main(String[] args) { Automobile a1 = new Sedan("Honda", 4, 25, 5, "Civic", SedanType.SMALL, 4, 150.0); Automobile a2 = new Truck("Chevy", 4, 20, 3, "Silverado", 4, 13000, TruckTypes.PICKUP); TwoWheeler t1 = new Bicycle("Trek", 2, "Skye SLX", 10, 110, true, true); TwoWheeler t2 = new MotorCycle("BMW", 2, "R18", 761, 50, 91); Vehicle[] veharr = {a1, a2, t1, t2}; for(Vehicle v : veharr) { System.out.println(v.toString()); } System.out.println("The total number of Vehicles should be 4: "); System.out.println(Vehicle.numVehicles); } } The link for "here":…
Please help debug this: Debugging Exercise 4-3, Farrell, Joyce, Java Programming, 9th edition, Cengage Learning public class DebugBox { private int width; private int length; private int height; private FixDebugBox() { length = 1; width = 1; height = 1; } public DebugBox(int width, int length, int height) { width = width; length = length; height = height; } public void showData() { System.out.println("Width: " + width + " Length: " + length + " Height: " + height); } public double getVolume() { double vol = length - width - height; return vol; } }
Use the java code below and integrate additional method to: Print the minimum values of each row and of each column. public class ArrayOperations2D {public static int[] findRowMax(int[][] anArray) {int[] max = new int[anArray.length];for (int i = 0; i < anArray.length; i++) {int largest = anArray[i][0];for (int j = 0; j < anArray[i].length; j++) {if (anArray[i][j] > largest) {largest = anArray[i][j];}}max[i] = largest;}return max;}public static int[] findRowSums(int[][] anArray) {int[] rowSums = new int[anArray.length];for (int i = 0; i < anArray.length; i++) {int sum = 0;for (int j = 0; j < anArray[i].length; j++) {sum += anArray[i][j];}rowSums[i] = sum;}return rowSums;}public static int[] findColumnMax(int[][] anArray) {int[] max = new int[anArray[0].length];for (int j = 0; j < anArray[0].length; j++) {int largest = anArray[0][j];for (int i = 0; i < anArray.length; i++) {if (anArray[i][j] > largest) {largest = anArray[i][j];}}max[j] = largest;}return…
Complete the following piece of java code, so that it could convert date to Julian number and Julian number to date. public class JulianNumber {      public static int toJulianNumber( int day, int month, int year ); // returns an array of integers for day, month, and year      public static int[] fromJulianNumber( int julianNumber ); }
FOR JAVA Write a Java class named Book, which has a name, an author and a pub- lisher. This class must also have a static field (an array with length 100) which holds names of all constructed books, and a static method which returns the number of constructed books.
In the main method add the following declarations: int[ ] arr1 = {1,2,3,4,5,6,7,8,9,10}; int[ ] arr2 = {10,9,8,7,6,5,4,3,2,1}; int[ ][ ] arr3 ={{1,2,3},{4,5,6},{7,8,9},{10}}; for(int x = 0; x<10; x++) { arr1[x]=arr2[x]; arr2[x]=x; } System.out.print(arr2[0]); 1-a: What is the output when you run the program? A: 0 B: 1 C: 2 D: None of the above 1-b: What is the value of: arr3[arr1[0]][arr2[arr1[8]]] A: 5 B: 6 C: 7 D: None of the above 1-c: What is the value of: arr3[2][arr1[1]] A: 7 B: 8 C: 9 D: None of the above
What is the output of the following code? Explain each line of the console output in yourown words. (HINT: if there are errors, please explain why the errors occur)import java.util.ArrayList;public class Pet {public void goToVet(){System.out.println("My Pet needs to go to Vet ...");}public static void main(String args[]){Hamster pug = new Hamster();Pet sally = new Pet();Pet loki = new Hamster();Object sunny = new Object();Object joy = new Pet();Object mini = new Hamster();ArrayList<Object> myList = new ArrayList<>(); myList.add(pug); myList.add(sally);myList.add(loki);myList.add(sunny);myList.add(joy);myList.add(mini);myList.forEach(i -> {if (i instanceof Hamster) {System.out.println("My Pet is cute: so " + (((Hamster) i).cute())+ "! ");((Hamster) i).goToVet();}else if (i instanceof Pet)((Pet) i).goToVet();elseSystem.out.println("This is not a Pet");});}}class Hamster extends Pet {public void goToVet(){System.out.println("My Hamster needs to go to Vet…
What is the output of the following code? Explain each line of the console output in yourown words. (HINT: if there are errors, please explain why the errors occur) import java.util.ArrayList;public class Pet {public void goToVet(){System.out.println("My Pet needs to go to Vet ...");}public static void main(String args[]){Hamster pug = new Hamster();Pet sally = new Pet();Pet loki = new Hamster();Object sunny = new Object();Object joy = new Pet();Object mini = new Hamster();ArrayList<Object> myList = new ArrayList<>(); myList.add(pug); myList.add(sally);myList.add(loki);myList.add(sunny);myList.add(joy);myList.add(mini);myList.forEach(i -> {if (i instanceof Hamster) {System.out.println("My Pet is cute: so " + (((Hamster) i).cute())+ "! ");((Hamster) i).goToVet();}else if (i instanceof Pet)((Pet) i).goToVet();elseSystem.out.println("This is not a Pet");});}}class Hamster extends Pet {public void goToVet(){System.out.println("My Hamster needs to go to Vet…
How do I code: public static int sum(int[] arr) public static int sum(int[] arr, int firstIndex, int lastIndex) public static double average(int[] arr) in java?
Solve below java problem please. You are given a list of Employee objects and you need to implement a method that returns the top n highest-paid employees. class Employee { private String name; private double salary; public Employee(String name, double salary) { this.name = name; this.salary = salary; } public String getName() { return name; } public double getSalary() { return salary; } }
Write the Java program: Make sure to have proper code indentation. Code: class Main { public static void main(String[] args) { Tile t1, t2, t3, t4, t5; int totalValue; t1 = new Tile('H', 4); t2 = new Tile('E', 1); t3 = new Tile('L', 1); t4 = new Tile('L', 1); t5 = new Tile('O', 1); totalValue = t1.getValue() + t2.getValue() + t3.getValue() + t4.getValue() + t5.getValue(); System.out.print("The word "); System.out.print(t1.getLetter()); System.out.print(t2.getLetter()); System.out.print(t3.getLetter()); System.out.print(t4.getLetter()); System.out.print(t5.getLetter()); System.out.println(" is worth " + totalValue + " points"); if(t4.equals(t3)) { System.out.print("It has two of these: "); System.out.println(t4); } else { System.out.print("Error: " + t3.toString() + " and ");System.out.println(t4.toString() + " aren't equal."); } }} /* SAMPLE OUTPUT The word HELLO is worth 8 pointsIt…
Q3)What is the o/p of following program? public class MyClass { public static void main(String[] args) { int[] dest= new int[]{0, 1,2,3,4,5}; System.out.println(dest [0]+ dest [5]+dest [2]); } } Answers a) 052 b) Compilation Error c) 7 d)152