Which of the following code samples can be compiled successfully? Assume that all the classes are defined in separate files.Sample 1package p1;public class AA {public void aMethod () {System.out.println("AA");package p1;public class BB {AA aa;public BB(int i) {aa = new AA();System.out.println("BB");Sample 2package p1;public class cC {public cC(int i) {System.out.printin("CC");package p1;public class DD {CC c;public DD() {cc = new CC();System.out.println("DD");Sample 31package p1;public class EE {public EE(int i) {System.out.println("EE");package p2;import p1.EE;public class FF {EE ee;public FF() {ee - new EE(20);System.out.println("FF"); O a. Samples 1 and 2 onlyO b. Samples 1 and 3 only.Oc. Samples 2 and 3 only.O d. Sample 2 onlyO e. Sample 3 onlyO f. Samples 1, 2 and 3.O g. None of the above.2.

In this we will be evaluating the code.

Which of the following code samples can be compiled successfully? Assume that all the classes are defined in separate files. Sample 1 package p1; public class AA { public void aMethod () { System.out.println("AA"); package p1; public class BB { AA aa; public BB(int i) { aa - new AA(); System.out.println("BB"); Sample 2 package p1; public class cC { public cc(int i) { System.out.println("CC"); package p1; public class DD { CC c; public DD() { cc = new CC(); System.out.println("DD"); Sample 3 1 package p1; public class EE { public EE(int i) { System.out.println("EE"); package p2; import pl.EE; public class FF ( EE ee; public FF() { ee - new EE(20); System.out.println("FF");

Which of the following code samples can be compiled successfully? Assume that all the classes are defined in separate files. Sample 1 package p1; public class AA { public void aMethod () { System.out.println("AA"); package p1; public class BB { AA aa; public BB(int i) { aa - new AA(); System.out.println("BB"); Sample 2 package p1; public class cC { public cc(int i) { System.out.println("CC"); package p1; public class DD { CC c; public DD() { cc = new CC(); System.out.println("DD"); Sample 3 1 package p1; public class EE { public EE(int i) { System.out.println("EE"); package p2; import pl.EE; public class FF ( EE ee; public FF() { ee - new EE(20); System.out.println("FF");

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

Write one word answers for the following: a.On compiling a file with the name “Demo.java” having a single class named Test, what is the name of the bytecode file that is created? b.When a method in asubclass has exactly the same signature as a method in the superclass, what is it known as?
In JAVA please Write a Bucket class that has the following private members: capacity (integer): capacity of the bucket in liters current(integer): the current amount of water in the bucket in liters Write the following public methods in the class: Bucket(int capacity): Constructor that creates empty bucket with given capacity. fill() : Makes the bucket full of water. empty(): Makes the bucket empty. pourDown(Bucket target): Pours down the water into the given bucket(target) until the target bucket gets full. Updates the amount of waters in both buckets accordingly.Example: Let’s B[c,w] denotes a bucket with capacity c that currently has w liters of waterif the source bucket B[7,5]’s pourDown method is called with target B[3,1] then the source becomes B[7,3] and target becomes B[3,3]if the source bucket B[9,2]’s pourDown method is called with target B[5,0] then the source becomes B[9,0] and the target becomes B[5,2] Write a BucketDemo…
Now that I understand the classes, I must implement them within a backend file. How would I do this in the following? class FoodWastageTrackerBackend { public: FoodWastageTrackerBackend(const std::string &food_wastage_records_filepath) : food_wastage_records_filepath_{food_wastage_records_filepath} {} // Reads the food wastage records from the file at // food_wastage_records_filepath_, and loads those in memory. If the file is // empty, it is a no-op. Returns true if the file was read successfully, else // returns false. NOTE: This function should be called right after the object // instantiation. // // Example: // FoodWastageTrackerBackend backend{"path/to/some_file_name.JSON"}; // backend.LoadRecordsFromJsonFile(); bool LoadRecordsFromJSONFile(); // Writes the food wastage records from the memory to a JSON file at path // food_wastage_records_filepath_. Returns true if the file was written // successfully, else returns false. bool…
Change the Fraction class so that its instance variables (numerator and denominator) are hidden (i.e. private). Check that the client class (after this change) will now not compile. Why does it not compile? Provide the changes to the Fraction class and the TestFraction class such that the program can work with the private instance variables by implementing appropriate accessor and mutator methods. import java.util.Scanner;//test programpublic class testfraction{public static void main(String[] args) {//create a Scanner objectScanner in = new Scanner(System.in);//create new fractionFraction frac = new Fraction();//declare numerator and denominatorint n=1,d;System.out.print("Enter Fraction's Numerator: ");//input numeratorn = in.nextInt();System.out.print("Enter Fraction's Denominator: ");//input denominatord = in.nextInt();//loop execute until the numerator is negativewhile(n>=0){//call input with n and dfrac.input(n, d);//call displayfrac.display();System.out.print("Enter…
We have a main class that implements a parking charge class of a parking management system. We wanted to generate a junit test class for our main class. Generate a junit test class for our main class ParkingCharge class class Instant{public int hours;public int minutes;} public class ParkingCharge{public String permitID;public String lotID;public double amount;public Instant incurredTime = new Instant(); // toString class definition@Overridepublic String toString(){String permitDetails = "\nPermit ID: "+permitID;String lotDetails = "\nLot ID: "+lotID;String incurredDetails="\nDuration: "+incurredTime.hours+" HH "+incurredTime.minutes+" MM"; // lets say 1 minutes of parking charge is 1 dollaramount = incurredTime.hours*60 + incurredTime.minutes; String amountDetails = "\nParking Charge: "+amount; return permitDetails+lotDetails+incurredDetails+amountDetails;}} Main Class import java.util.Scanner;public class main {public static void main(String [] args){Scanner sc = new…
WRITE JAVA CODE TO THE GIVEN CODE BELOW JUST FOR THE "FILL HERE " PARTS!!! USE THE PHOTO FOR THE MAIN CLASS, JUST RESULTS ARE WRITTEN THERE public class Queue<T> { private T[] a = /* fill here */; private int N = 0; public /* fill here */ isEmpty() { // ... fille here ... } public /* fill here */ size() { // ... fille here ... } private /* fill here */ resize(/* fill here if needed*/) { // ... fille here ... } public /* fill here */ enqueue(/* fill here if needed*/) { // ... fille here ... } public /* fill here */ dequeue(/* fill here if needed*/) { // ... fille here ... } // this method is for unit testing; don't touch public int getArraySize(){ return a.length; } }
Write a program in the Java language requires the management of university students, where student data (name, student number, and specialization) are saved, and then he can add and delete study materials for the current semester, and you can also add the grade for each subject (with the addition of the final code for the degree automatically).Note: The class principle is used to solve this assignment.
write a python code and finish it within 20 minutes please ????????:Design Australia class and England class which inherit from Cricket class so that the following code provides the expected output.Note:Wicket Bonus = #of wicket * 1000Century Bonus = #of century * 1000addPlayerWithWickets and addPlayerWithCenturies methods should work any number of parameters assuming that the parameter number will be an even number and greater than 1.class Cricket: total_player = 0 def __init__(self, name, number): self.name = name self.number = number def __str__(self): s = "Name: "+self.name+", World Cup: "+self.number return s# Write your codes here.# Do not change the following lines of code.s1 = Australia("Australia", "5")print("==============================")s1.addPlayerWithWickets("Starc", 4, "Hazlewood", 3)print("==============================")print(s1)print("==============================")s2 = England("England",…
Given a class Square with an instance variable width, provide a recursive getArea method. Construct a square whose width is one less than the original and call its getArea method. Make a resource class that contains all of the methods and make a driver class in a separate file, and the driver class only needs to call those methods. The driver class needs to have only 5 lines of code. The code will need to be written in Java. Please help me with exactly what I asked for help
For this exercise, you will be given a project file digital_pet containing two (2) classes, the DigiPet class andthe DigiPetTester class.Every DigiPet has five fields:- name- lifespan (in cycles) – max age- age (in cycles) – current age- mood (2 = joyful, 1 = happy, 0 = neutral, -1 = sad, -2 = angry)- size – current size of pet (size ≥ 1)A DigiPet has a default constructor, overloaded constructor, and some various methods which allow one tointeract with it or modify its state.Poke or pet increases or decreases its mood.Feed or exercise increases or decreases its size by a specified amount.Every time you interact with the digipet (poke, pet, feed, exercise), its age increases. When the age reaches thelifespan, it dies (or becomes a zombie).You need to modify and customize the DigiPet class as follows:- Implement the overloaded constructor: Initialize all five fields. Use the values passed as parameters toinitialize name and lifespan. Use the same default values that the default…
Language - Java Create a utility class called DuplicateCounter. Create an instance method called count that takes a single parameter called dataFile (representing the path to a text file) and uses a Map of Strings to count how many times each word occurs in dataFile. The counts should be stored in an instance variable called wordCounter. Create an instance method called write that takes a single parameter called outputFile (representing the path to a text file) and writes the contents of wordCounter to the file pointed to by outputFile. The output file should be overwritten if it already exists, and created if it does not exist. Create a separate class called Application that contains a main method which illustrates the use of DuplicateCounter by calling both the remove and write methods. Your input file must be called problem2.txt and your output file must be called unique_word_counts.tx
????????:Suppose you are an owner of a car wash & service center. Now, implement the design of the Car class so that the following output is produced:[Your code should work for any number of services added in the add_Services method]# Write your code hereprint(“No.of Car=”, Car.count)c1 = Car('Lamborghini', 2002)c1.add_Services('Battery Replacement', 'A/C Recharge')c2 = Car('Toyota Corolla', 2016)c2.add_Services('Radiator Flush', 'Fill Service')c3 = Car('Mitsubishi Pajero', 2018)c3.add_Services('Filter change', 'Timing Belt Replacement')print("=========================")c1.printCarDetail()print("=========================")c2.printCarDetail()print("=========================")c3.printCarDetail()print("=========================")print(“No.of Car =”, Car.count)Output:No.of Car = 0=========================Name: LamborghiniYear of manufacture: 2002List of Services: Battery Replacement , A/C Recharge=========================Name: Toyota CorollaYear of manufacture: 2016List of Services:…