1 import java.util.Scanner; 2 4 3 public class AssigningNumberToVariable { public static void main(String[] args) { Scanner scnr = new Scanner(System.in); int numPeople; 567 8 9 10 11 12 13 14 15 16} } numPeople = scnr.nextInt (); /* Your solution goes here */ System.out.print("There are "); System.out.print (numPeople); System.out.println(" people.");

1 import java.util.Scanner; 2 4 3 public class AssigningNumberToVariable { public static void main(String[] args) { Scanner scnr = new Scanner(System.in); int numPeople; 567 8 9 10 11 12 13 14 15 16} } numPeople = scnr.nextInt (); /* Your solution goes here */ System.out.print("There are "); System.out.print (numPeople); System.out.println(" people.");

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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class Param3 { public int x; private void increase(int p) { x = x*p; } public void calculateX(int y) { increase(y); } public int getX() { return x; } } // in another class Param3 q3 = new Param3(); q3.x = 5; q3.calculateX(7); System.out.println(q3.getX()); what would be the answer for the last two lines ? also above were x = x*p do both x in here are the fields? wouldn't that be cnofusing?
import java.util.Scanner; public class WinningTeam { public static void main(String[] args) { Scanner scnr = new Scanner(System.in); Team team = new Team(); String name = scnr.next(); int wins = scnr.nextInt(); int losses = scnr.nextInt(); team.setName(name); team.setWins(wins); team.setLosses(losses); team.printStanding(); }}
public class Geometry{public static void main(String[] args){//asks for user's choice Scanner in = new Scanner(System.in);displayMenu();selectOption(choice);System.out.println("Enter your choice (1-3): ");int choice1 = in.nextInt();System.out.println("Thanks for using the Geometry Calculator - Goodbye!");//Prints if input is a number that is not one of the choiceswhile(choice1 < 1 || choice1 > 3 ){System.out.println("Invalid choice. Please enter 1 - 3: ");choice1 = in.nextInt();}}/**Displays the menu*/public static void displayMenu(){System.out.println("Welcome to the Geometry Calculator Application");System.out.println("1. Calculate the Area of a Circle");System.out.println("2. Calculate the Area of a Rectangle");System.out.println("3. Calculate the Area of a Triangle");}/** This method calculates the area of the circle@return the area of the circle*/public static double circle()// calculates the area of the circle{Scanner in = new Scanner(System.in);System.out.println("What is…
import java.util.Scanner; public class WinningTeam { public static void main(String[] args) { Scanner scnr = new Scanner(System.in); Team team = new Team(); String name = scnr.next(); int wins = scnr.nextInt(); int losses = scnr.nextInt(); team.setName(name); team.setWins(wins); team.setLosses(losses); team.printStanding(); }} This is the second part of the program and not geting it to run public class Team { // TODO: Declare private fields - name, wins, losses private String name; private int wins; private int losses; public int getlosses(){ return losses; } // TODO: Define mutator methods - // setName(), setWins(), setLosses() public String setName(){//String name int wins int losses return name; } public int setWins(){ return wins; } public int setLosses(){ return losses; } // TODO: Define accessor methods - //…
Code example 2-1import java.util.Scanner;public class InvoiceApp {public static void main(String[] args) {Scanner sc = new Scanner(System.in);String choice = “y”;While (choice.equals(“y”)) {System.out.print("Enter subtotal: ");double subtotal = sc.nextDouble();double salesTax = subtotal * .0875;double invoiceTotal = subtotal + salesTax;String message = “Subtotal = ” + subtotal + “\n”+ “ Sales tax = ” + salesTax + “\n”+ “Invoice total = ” + invoiceTotal + “\n\n”System.out.println(message);System.out.print(“Continue? Enter y or n: ”);Choice = sc.next();}}}38. (Refer to code example 2-1.) If the user enters “Y” when asked if he/she wants to continue, the application will a. repeat the while loop b. display a blank line, then repeat the while loop c. End
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import java.util.Scanner; public class PetInformation {public static void main(String[] args) {Scanner scnr = new Scanner(System.in); Pet myPet = new Pet(); Cat myCat = new Cat(); String petName, catName, catBreed; int petAge, catAge; petName = scnr.nextLine(); petAge = scnr.nextInt(); scnr.nextLine(); catName = scnr.nextLine(); catAge = scnr.nextInt(); scnr.nextLine(); catBreed = scnr.nextLine(); // Create generic pet (using petName, petAge) and then call printInfo myPet.setName(petName); myPet.setAge(petAge); myPet.printInfo(); // Create cat pet (using catName, catAge, catBreed) and then call printInfo myCat.setName(catName); myCat.setAge(catAge); myCat.setBreed(catBreed); myCat.printInfo(); // Use getBreed(), to output the breed of the cat System.out.println(" Breed: " + myCat.getBreed());}}
public class TestAverage {public static void main(String[] args) {int test1, test2, test3, sum;Scanner reader = new Scanner(System.in);System.out.println("Enter test 1");test1 = reader.nextInt();System.out.println("Enter test 2");test2 = reader.nextInt();System.out.println("Enter test 3");test3 = reader.nextInt();sum = test1 + test2 + test3;System.out.println("The sum is " + sum);System.out.println("The average is " + sum / 3);}}There is one logic error in this code explain what is wrong and how to fix it.
public class LabProgram { public static void main(String args[]) { Course cis162 = new Course(); int beforeCount; String toDrop; // Example students for testing cis162.addStudent(new Student("Henry", "Nguyen", 3.5)); cis162.addStudent(new Student("Brenda", "Stern", 2.0)); cis162.addStudent(new Student("Lynda", "Robison", 3.2)); cis162.addStudent(new Student("Sonya", "King", 3.9)); toDrop = "Stern"; beforeCount = cis162.countStudents(); cis162.dropStudent(toDrop); System.out.println("Course size: " + beforeCount + " students"); System.out.println("Course size after drop: " + cis162.countStudents() + " students"); } } import java.text.DecimalFormat; // Class representing a student public class Student { private String first; // first name private String last; // last name private double gpa; // grade point average // Student class constructor public Student(String f, String l, double g) {…
import java.util.Scanner; public class MealEstablishmentDirectory { public static void main (String[] args) { Scanner scnr = new Scanner(System.in); int newRating; String newState; MealEstablishment mealEstablishment1 = new MealEstablishment(); System.out.println("Default values: "); mealEstablishment1.print(); newRating = scnr.nextInt(); newState = scnr.next(); mealEstablishment1.setRating(newRating); mealEstablishment1.setState(newState); System.out.println("After mutator methods: "); mealEstablishment1.print(); } }