5:08 AIIA Moving to the next question prevents changes to this answer.Question 21Assume that the following method header is for a method in class A.public void displayValue (int value)Assume that the following code segments appear in another method, also in class A. Which contains a legal call to the displayValue method?int x = 7;displayValue (x) ;int x = 7;O displayvalue (int x);int x = 7;void displayValue (x);int x = 7;O displayValue (x) 5:08 PQuestion 7In the following code, which line will cause a compiler error?Line 1 public class ClassALine 2Line 3Line 4Line 5public ClaasA() (}public int methodl (int a) (}public final int method2 (double b) ()Line 6Line 7Line 8Line 9Line 10Line 11public ClasaB extenda ClassApublic ClassB() (}public int methodl (int b) (}public int method2 (double c) {}Line 12 )O Line 11O Line 10O Line 4O Line 5

A Moving to the next question prevents changes to this answer. Question 21 Assume that the following method header is for a method in class A. public void displayValue (int value) Assume that the following code segments appear in another method, also in class A. Which contains a legal call to the displayValue m int x = 7; displayValue (x) ; int x = 7; O displayvalue(int x); int x = 7; void displayValue (x); int x = 7; O displayValue (x)

A Moving to the next question prevents changes to this answer. Question 21 Assume that the following method header is for a method in class A. public void displayValue (int value) Assume that the following code segments appear in another method, also in class A. Which contains a legal call to the displayValue m int x = 7; displayValue (x) ; int x = 7; O displayvalue(int x); int x = 7; void displayValue (x); int x = 7; O displayValue (x)

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

Examine the method header below, then write a call to the method as an example.a personal void ShowValue()
Instructor note: This lab is part of the assignment for this chapter. HINT: 1). The decision means how many times to flip the coin. 2). Use a random integer variable to indicate the head or tail in each toss. Java Define a method named coinFlip that takes a Random object and returns "Heads" or "Tails" according to a random value 1 or 0. Assume the value 1 represents "Heads" and 0 represents "Tails". Then, write a main program that reads the desired number of coin flips as an input, calls method coinFlip() repeatedly according to the number of coin flips, and outputs the results. Assume the input is a value greater than 0. Ex: If the random object is created with a seed value of 2 and the input is: 3 the output is: Heads Tails Heads Note: For testing purposes, a Random object is created in the main() method using a pseudo-random number generator with a fixed seed value. The program uses a seed value of 2 during development, but when submitted, a different seed value may be used…
Make C# (Sharp): console project named MyPlayList. Create an Album class with 4 fields to keep track of title, artist, genre, and copies sold. Each field should have a get/set property. Your Album class should have a constructor to initialize the title (other 3 variables should default to null or 0). In addition, create a public method in the Album class to calculate amount sold for the album (copies sold * cost_of_album). You determine the cost of each album. Also create a method in the Album class to display the information. Print out of information should look something like this: The album Tattoo You by the Rolling Stones, a Rock group, made $25,000,000. In the main method, create 3 instances of the Album class with different albums, use setters to set values of the artist, genre, and copies sold. And then use getters to display information about each on the console.
Write the following two methods: computeDiameter: This method accepts the radius (r) of a circle, and returns its diameter (2*r; radius = 7.5). Declare all variables used here & initialize radius: Show method call: Write method code here: displayData: This method accepts two arguments: radius & diameter. The output should have appropriate messages on the screen. Show method call: Write method code here:
a. Plan the logic for an insurance company program to determine policy premiums. The program continuously prompts the user for an insurance policy number. When the user enters an appropriate sentinel value, end the program. Call a method that prompts each user for the type of policy needed—health or auto. While the user’s response does not indicate health or auto, continue to prompt the user. When the value is valid, return it from the method. Pass the user’s response to a new method where the premium is set and returned—$550 for a health policy or $225 for an auto policy. Display the results for each policy. b.Modify Exercise 9a so that the premium-setting method calls one of two additional methods—one that determines the health premium or one that determines the auto premium. The health insurance method asks users whether they smoke; the premium is $550 for smokers and $345 for nonsmokers. The auto insurance method asks users to enter the number of traffic tickets they have received…
Question 1/7 (1 p.) Answer is mandatory Assume the following code, then select the code that creates toString() method? (toString). class aaa { private int aa; ...) public void toString() { return "aa = " + aa; } public String toString() { return "aa = " + aa; } public int to string() { return "aa = " + aa; } Opublic String ToString() { return "aa = " + aa; }
A method CANNOT change the values of the instance variables of a class type that is an argument to the method call. True False
Using JAVASCRIPT write an object prototype for a Person that has a name and age, has a printInfo method, and also has a method that increments the persons age by 1 each time the method is called. Create two people using the 'new' keyword, and print both of their infos and increment one persons age by 3 years. Use an arrow function for both methods */ // Create our Person Prototype // Use an arrow to create the printInfo method // Create another arrow function for the addAge method that takes a single parameter // Adding to the age
true of false: a) The first step in any programming task is to start coding. b) The only places we would ever want to put a comment in our code are above a method and above a class.
Charge Account ValidationCreate a class with a method that accepts a charge account number as its argument. The method should determine whether the number is valid by comparing it to the following list of valid charge account numbers:5658845 4520125 7895122 8777541 8451277 13028508080152 4562555 5552012 5050552 7825877 12502551005231 6545231 3852085 7576651 7881200 4581002These numbers should be stored in an array. Use a sequential search to locate the number passed as an argument. If the number is in the array, the method should return true, indicating the number is valid. If the number is not in the array, the method should return false, indicating the number is invalid.Write a program that tests the class by asking the user to enter a charge account number. The program should display a message indicating whether the number is valid or invalid.
public static class Lab2{public static void Main(){int idNum;double payRate, hours, grossPay;string firstName, lastName;// prompt the user to enter employee's first nameConsole.Write("Enter employee's first name => ");firstName = Console.ReadLine();// prompt the user to enter employee's last nameConsole.Write("Enter employee's last name => ");lastName = Console.ReadLine()// prompt the user to enter a six digit employee numberConsole.Write("Enter a six digit employee's ID => ");idNum = Convert.ToInt32(Console.ReadLine());// prompt the user to enter the number of hours employeeworkedConsole.Write("Enter the number of hours employee worked =>");// prompt the user to enter the employee's hourly pay rateconsole.Write("Enter employee's hourly pay rate: ");payRate = Convert.ToDouble(Console.ReadLine());// calculate gross paygrossPay = hours * payRate;// output resultsConsole.WriteLine("Employee {0} {1}, (ID: {2}) earned {3}",firstName, lastName, idNum,…
Design a class named CustomerRecord that holds a customer number, name, and address. Include separate methods to 'set' the value for each data field using the parameter being passed. Include separate methods to 'get' the value for each data field, i.e. "return" the field's value. Pseudocode: