8. The first few lines of the Batter class are shown below. public class Batter private String name; private boolean leftHanded; private double battingAvg; Derectly accessible éa the oequeals () netha) // more code not shown, including constructor(s) and // including "getter" methods for all instance variables S// (i.e. getName, isLeftHanded, getBattingAvg) For example: public boolean isleftHanded() { return leftHanded;

8. The first few lines of the Batter class are shown below. public class Batter private String name; private boolean leftHanded; private double battingAvg; Derectly accessible éa the oequeals () netha) // more code not shown, including constructor(s) and // including "getter" methods for all instance variables S// (i.e. getName, isLeftHanded, getBattingAvg) For example: public boolean isleftHanded() { return leftHanded;

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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The following class declaration has errors. Locate as many as you can. class Box {private:double width;double length;double height; public:Box(double w, l, h){ width = w; length = l; height = h; } // Overloaded prefix ++ operator void operator++(){ ++width; ++length; } // Overloaded postfix ++ operator void operator++(){width++; length++; }... Other member functions follow ...};
In a class with overloaded constructors, each version of the constructor must have a different
Subclass toString should call include super.toString(); re-submit these codes. public class Vehicle { private String registrationNumber; private String ownerName; private double price; private int yearManufactured; Vehicle [] myVehicles = new Vehicle[100]; public Vehicle() { registrationNumber=""; ownerName=""; price=0.0; yearManufactured=0; } public Vehicle(String registrationNumber, String ownerName, double price, int yearManufactured) { this.registrationNumber=registrationNumber; this.ownerName=ownerName; this.price=price; this.yearManufactured=yearManufactured; } public String getRegistrationNumber() { return registrationNumber; } public String getOwnerName() { return ownerName; } public double getPrice() { return price; } public int getYearManufactured() { return yearManufactured; }…
The following class declaration has errors. Locate as many as you can. class Box { private: double width; double length; double height; public: Box(double w, l, h){ width = w; length = l; height = h; } Box(Box b) // Copy constructor {width = b.width; length = b.length; height = b.height; } ... Other member functions follow ...};
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True or False Constructors can accept arguments in the same way as other methods.
Object-oriented programmingProgram the employee class as indicated in the diagramTo calculate the salary, just multiply the number of hours by the payment per hour.The capture method asks the user for the data for the three attributes, asks for the hours worked and the payment per hour and with these data calculates the salary.The show method displays all of the employee's data.Do not forget the getter and setter methods only for attributes of type privateYour company has 7 employees and you would like1. Capture the data of each employee2. Show the data of each employee3. Show the data of a particular employee4. Calculate and display the average salary5. Calculate and display the name of the employee with the highest salary6. Calculate and display the name of the employee with the lowest salary7. Calculate and show the total payment you will make for all your employees
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9. A university XYZ would like to have a system that will calculate grade for their students. Thus, you have been assigned to develop the system that requires student name and mark as an input to the system. The system will calculate the grade based on the following table. Grade Mark 0-39.9 40 - 59 60 - 70 71 - 80 81 - 100 F C A The example of the output as follows: : Jung Lee : 75 : Jeongmoon : 85.5 Enter a student name Enter a mark Enter a student name Enter a mark =====- ======= =====-== : Jung Lee : 75.0 Student name Mark Grade : B ===== =======-- ======== : Jeongmoon : 85.5 : A Student name Mark Grade ====
"CommissionEmployee" class: package commissions; import employees.Employee; public class CommissionEmployee extends Employee { private double gross_sales; private double rate; public CommissionEmployee(String fname, String lname, String SSN, double gross_sales, double rate) { super(fname, lname, SSN); this.gross_sales = gross_sales; this.rate = rate; } public double getGross_sales() { return gross_sales; } public void setGross_sales(double gross_sales) { this.gross_sales = gross_sales; } public double getRate() { return rate; } public void setRate(double rate) { this.rate = rate; } public double earnings() { return gross_sales*rate; } @Override public String toString() { return super.toString()+"[gross_sales=" + gross_sales + ", rate=" + rate + "]"; } } Update the code in JAVA to include the following: "BasePlusCommissionEmployee" class that inherits from "CommissionEmployee" class. A BasePlusCommissionEmployee has a…