import java.text.DecimalFormat; public class Ex0606 { public static void main (String args[]) DecimalFormat money = new DecimalFormat("$0.00 double hoursWorked = 50; double hourlyRate = 25; double grossPay = hoursWorked * hourlyRate; double deductions = grossPay * 0.2%3; double netPay = grossPay - deductions; System.out.printIn(money.format(grossPay)); System.out.printin(money.format(deductions)3; System.out.printin(money.format(netPay); %3D %3D %3D %3

import java.text.DecimalFormat; public class Ex0606 { public static void main (String args[]) DecimalFormat money = new DecimalFormat("$0.00 double hoursWorked = 50; double hourlyRate = 25; double grossPay = hoursWorked * hourlyRate; double deductions = grossPay * 0.2%3; double netPay = grossPay - deductions; System.out.printIn(money.format(grossPay)); System.out.printin(money.format(deductions)3; System.out.printin(money.format(netPay); %3D %3D %3D %3

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 2.16 LAB: Driving cost - methods Write a method drivingCost() with input parameters drivenMiles, milesPerGallon, and dollarsPerGallon, that returns the dollar cost to drive those miles. All items are of type double. If the method is called with 50 20.0 3.1599, the method returns 7.89975. Define that method in a program whose inputs are the car's miles/gallon and the gas dollars/gallon (both doubles). Output the gas cost for 10 miles, 50 miles, and 400 miles, by calling your drivingCost() method three times. Output each floating-point value with two digits after the decimal point, which can be achieved as follows:System.out.printf("%.2f", yourValue); The output ends with a newline. Ex: If the input is: 20.0 3.1599 the output is: 1.58 7.90 63.20 Your program must define and call a method:public static double drivingCost(double drivenMiles, double milesPerGallon, double dollarsPerGallon) Note: This is a lab from a previous chapter that now requires the use of a method.
Use Java Programming Language Loan Account Class: Create class LoanAccount. Use a static variable annualInterestRate to store the annual interest rate for all account holders. Each object of the class contains a private instance variable principal indicating the amount the person is borrowing. Provide method: public double calculateMonthlyPayment(int numberOfPayments) to calculate the monthly payment by using the following formula: double monthlyPayment = principal * ( monthlyInterest / (1 - Math.pow(1 + monthlyInterest, -numberOfPayments))); where monthly interest = annualInterestRate/12. Provide a static method setAnnualInterestRate that sets the annualInterestRate to a new value. Set the initial loan amount (Principal) for a new loan through the constructor. Write a program to test class LoanAccount. Instantiate two LoanAccount objects, loan1 and loan2, with principal loan amounts of $5000.00 and $31000.00, respectively. Set annualInterestRate to 1%, then calculate the monthly…
(Java) Question 3 Explain the answer step-by-step and include verbal explanation. Thank you! What will the following display to the console (don't run the code until you work it out by hand!) public class Person { String name; public Person(String name) { this.name = name; } public void printGreeting() { System.out.println("Hi, my name is, " + name + "!"); }}public class Student extends Person { double gpa; public Student(String name, double gpa) super(name); this.gpa = gpa; } public void printGreeting() { super.printGreeting(); System.out.println("My GPA of " + gpa + " is higher than yours!"); }}public class Test { public static void main(String[] args) { Person yan = new Person("Yan"); Person leann = new Student("Leann", 4.0); Student anh = new Student("Anh", 3.95); yan.printGreeting(); leann.printGreeting(); anh.printGreeting(); }}
In JAVA please help with the following: You are asked to write a discount system for a beauty salon, which provides services and sells beauty products. It offers 3 types of memberships: Premium, Gold and Silver. Premium, gold and silver members receive a discount of 20%, 15%, and 10%, respectively, for all services provided. Customers without membership receive no discount. All members receive a flat 10% discount on products purchased (this might change in future). Your system shall consist of three classes: Customer, Discount and Visit, as shown in the class diagram. It shall compute the total bill if a customer purchases $x of products and $y of services, for a visit. Also write a test program to exercise all the classes. The class DiscountRate contains only static variables and methods (underlined in the class diagram). You should write JUnit tests for all your methods except constructors, getters and setters.
package payroll2; // This program calculates an employee's take home pay. import javax.swing.JOptionPane; public class Payroll { private static double sum; private static double salary; private static double dependentDeduction; public static void main(String args[]) { { double salary; double numDependents; double dependentDeduction = salary * 0.025 * numDependents; double stateTax = salary * 0.065; double federalTax = salary * 0.28; double totalWithholding= stateTax + federalTax; double takeHomePay = salary - stateTax - federalTax + dependentDeduction; // Calculate state tax here. JOptionPane.showInputDialog("Enter Employee name: "); JOptionPane.showInputDialog("Enter Salary: ");//prompt…
In C++ class rectangleType { public: void setLengthWidth(double x, double y); //Sets the length = x; width = y; void print() const; //Output length and width double area(); //Calculate and return the area of the rectangle (length*width) double perimeter(); //Calculate and return the perimeter (length of outside boundary of the rectangle) private: double length; double width; }; Print out the area of the rectangle.
JAVA PROGRAM Chapter 7. PC #1. Rainfall Class Write a RainFall class that stores the total rainfall for each of 12 months into an array of doubles. The program should have methods that return the following: • the total rainfall for the year • the average monthly rainfall • the month with the most rain • the month with the least rain Demonstrate the class in a complete program. Main class name: RainFall (no package name) est Case 1 Enter the rainfall amount for month 1:\n1.2ENTEREnter the rainfall amount for month 2:\n2.3ENTEREnter the rainfall amount for month 3:\n3.4ENTEREnter the rainfall amount for month 4:\n5.1ENTEREnter the rainfall amount for month 5:\n1.7ENTEREnter the rainfall amount for month 6:\n6.5ENTEREnter the rainfall amount for month 7:\n2.5ENTEREnter the rainfall amount for month 8:\n3.3ENTEREnter the rainfall amount for month 9:\n1.1ENTEREnter the rainfall amount for month 10:\n5.5ENTEREnter the rainfall amount for month 11:\n6.6ENTEREnter…
A rational number is the quotient of two integers - the numerator and denominator. The denominator cannot be zero. Two rational numbers can be added, subtracted, multiplied and divided. Write a java classRational for a rational number with the following specs: • A constructor that gets two integers (make sure the denominator is not 0).• The numerator and denominator should be private.• Getters: public int getNumerator() and public int getDenominator()• Setters: public void setNumerator(int n) and public void setDenominator(int d)• Public methods public Rational add(Rational r1), public Rational subtract(Rationalr1), public Rational multiply(Rational r1) and public Rational divide(Rational r1).• Printer function: public void print(). The number should be printed in the format n/d (numerator, forward-slash, denominator).
JAVAclass: Main.java, Quadratic.java, TestQuadratic.java Create a class called Quadratic for representing a one-variable quadratic expression of the form: ax2 + bx + c a,b and c here are the coefficients. The class should contain the following methods: * A constructor that accepts values for a, b, and c. * public double getA() * public double getB() * public double getC() * public double evaluate (int x) * will return the value of the expression at point x * public double discriminant() - that will return (b2 - 4ac) * public boolean isImaginaryRoots() - roots are imaginary if (b2 - 4ac) < 0 * public boolean isRealRoots() - roots are real if (b2 - 4ac) >= 0 // these methods can only be invoked if the roots are not imaginary * public float firstRoot() * public float secondRoot() * public boolean isPerfectSquare(); // If the first and second roots are equal * Try to override the toString methods * Write a sample main program that will work as shown below. Example output:…
Java 2 billBook -invoiceNumber: String-visitDate: String-patientName: String-paid: boolean -bills: bill[]-doctor: String +bill(all parameters)+Setters/getters methods(ifneeded)+printInvoice(): void +billBook(doctor:String,capacity:int)+Setters/getters methods (if needed)+addBills(): void+payBill(invoiceNumber: String): int Implement the class bill:a. Write the constructor that takes as parameters all data fields except the paid value. Abill object is by defauld not paid.b. The printInvoice() method should output the following information: The invoiceNumber, the visitDate, the name of the patient name A message “The bill is paid” or “The bill is not paid” according to the value of the field paid.2. Implement the class billBook using the above UML:a. Write the constructor that takes as parameters the name of the doctor who hasexamined the patient and the capacity which represents the size of the array bills.b. Write the method addBills that reads the information of bill objects from…
JAVA PROGRAM Chapter 7. PC #1. Rainfall Class Write a RainFall class that stores the total rainfall for each of 12 months into an array of doubles. The program should have methods that return the following: • the total rainfall for the year • the average monthly rainfall • the month with the most rain • the month with the least rain Demonstrate the class in a complete program. Main class name: RainFall (no package name) HERE IS A WORKING CODE, PLEASE MODIFY THIS CODE SO THE PUBLIC CLASS IS MAIN AND WERE EVER THERE IS MAIN IN THE CHANGE IT SO IT RUNS. ALSO, MAKE SURE WHEN I UPLOAD THE CODE TO HYPERGRADE IT PASSES ALL THE TEST CASES. THANK YOU import java.util.Scanner;public class Main { private double[] rainfall = new double[12]; public Main(double[] rainfall) { this.rainfall = rainfall; } public double getTotalRainfall() { double total = 0.0; for(double rain : rainfall) { total += rain; }…
in java create a class shopping mall. It has Items with name, manufacturer and price. Provide constructors. Getters, setters, toString methods. We add several items to Store. For that create a store class having name and array of items, Provide Constructors, getters/setters and toString(), in addition you have to provide a method add which add new item to the array. The main function that does these things looks as follows: Public static void main(Strings[] args) { Item shampoo2(“pantene”, “Procter & Gamble”,100), noodles(“Noodles”, “knorr”, 50); // add further items. Store abcSuperStore; abcSuperStore.add(shampoo2); abcSuperStore.add(noodles); … abcSuperStore.sale(shampoo2); a bcSuperStore.sale(noodles);