I want the class, BasePlusCommissionEmployee, to contain a reference to a CommisionEmployee object. Instead of the inheritance. *Code in Question below* public class CommissionEmployee { private final String firstName; private final String lastName; private final String socialSecurityNumber; private double grossSales; // gross weekly sales private double commissionRate; // commission percentage // five-argument constructor public CommissionEmployee(String firstName, String lastName, String socialSecurityNumber, double grossSales, double commissionRate) { // implicit call to Object constructor occurs here // if grossSales is invalid throw exception if (grossSales < 0.0) { throw new IllegalArgumentException("Gross sales must be >= 0.0"); } // if commissionRate is invalid throw exception if (commissionRate <= 0.0 || commissionRate >= 1.0) { throw new IllegalArgumentException( "Commission rate must be > 0.0 and < 1.0"); } this.firstName = firstName; this.lastName = lastName; this.socialSecurityNumber = socialSecurityNumber; this.grossSales = grossSales; this.commissionRate = commissionRate; } // return first name public String getFirstName() {return firstName;} // return last name public String getLastName() {return lastName;} // return social security number public String getSocialSecurityNumber() {return socialSecurityNumber;} // set gross sales amount public void setGrossSales(double grossSales) { if (grossSales < 0.0) { throw new IllegalArgumentException("Gross sales must be >= 0.0"); } this.grossSales = grossSales; } // return gross sales amount public double getGrossSales() {return grossSales;} // set commission rate public void setCommissionRate(double commissionRate) { if (commissionRate <= 0.0 || commissionRate >= 1.0) { throw new IllegalArgumentException( "Commission rate must be > 0.0 and < 1.0"); } this.commissionRate = commissionRate; } // return commission rate public double getCommissionRate() {return commissionRate;} // calculate earnings public double earnings() { return getCommissionRate() * getGrossSales(); } // return String representation of CommissionEmployee object @Override public String toString() { return String.format("%s: %s %s%n%s: %s%n%s: %.2f%n%s: %.2f", "commission employee", getFirstName(),getLastName(), "social security number", getSocialSecurityNumber(), "gross sales",getGrossSales() , "commission rate", getCommissionRate() ); } } -------------------------------------------------------------------------------------------------------------------------------------------------- public class BasePlusCommissionEmployee extends CommissionEmployee { private double baseSalary; // base salary per week // six-argument constructor public BasePlusCommissionEmployee(String firstName, String lastName, String socialSecurityNumber, double grossSales, double commissionRate, double baseSalary) { super(firstName, lastName, socialSecurityNumber, grossSales, commissionRate); // if baseSalary is invalid throw exception if (baseSalary < 0.0) { throw new IllegalArgumentException("Base salary must be >= 0.0"); } this.baseSalary = baseSalary; } // set base salary public void setBaseSalary(double baseSalary) { if (baseSalary < 0.0) { throw new IllegalArgumentException("Base salary must be >= 0.0"); } this.baseSalary = baseSalary; } // return base salary public double getBaseSalary() {return baseSalary;} // calculate earnings @Override public double earnings() { } // return String representation of BasePlusCommissionEmployee40 @Override public String toString() { } }

I want the class, BasePlusCommissionEmployee, to contain a reference to a CommisionEmployee object. Instead of the inheritance. Code in Question below public class CommissionEmployee { private final String firstName; private final String lastName; private final String socialSecurityNumber; private double grossSales; // gross weekly sales private double commissionRate; // commission percentage // five-argument constructor public CommissionEmployee(String firstName, String lastName, String socialSecurityNumber, double grossSales, double commissionRate) { // implicit call to Object constructor occurs here // if grossSales is invalid throw exception if (grossSales < 0.0) { throw new IllegalArgumentException("Gross sales must be >= 0.0"); } // if commissionRate is invalid throw exception if (commissionRate <= 0.0 || commissionRate >= 1.0) { throw new IllegalArgumentException( "Commission rate must be > 0.0 and < 1.0"); } this.firstName = firstName; this.lastName = lastName; this.socialSecurityNumber = socialSecurityNumber; this.grossSales = grossSales; this.commissionRate = commissionRate; } // return first name public String getFirstName() {return firstName;} // return last name public String getLastName() {return lastName;} // return social security number public String getSocialSecurityNumber() {return socialSecurityNumber;} // set gross sales amount public void setGrossSales(double grossSales) { if (grossSales < 0.0) { throw new IllegalArgumentException("Gross sales must be >= 0.0"); } this.grossSales = grossSales; } // return gross sales amount public double getGrossSales() {return grossSales;} // set commission rate public void setCommissionRate(double commissionRate) { if (commissionRate <= 0.0 || commissionRate >= 1.0) { throw new IllegalArgumentException( "Commission rate must be > 0.0 and < 1.0"); } this.commissionRate = commissionRate; } // return commission rate public double getCommissionRate() {return commissionRate;} // calculate earnings public double earnings() { return getCommissionRate() * getGrossSales(); } // return String representation of CommissionEmployee object @Override public String toString() { return String.format("%s: %s %s%n%s: %s%n%s: %.2f%n%s: %.2f", "commission employee", getFirstName(),getLastName(), "social security number", getSocialSecurityNumber(), "gross sales",getGrossSales() , "commission rate", getCommissionRate() ); } } -------------------------------------------------------------------------------------------------------------------------------------------------- public class BasePlusCommissionEmployee extends CommissionEmployee { private double baseSalary; // base salary per week // six-argument constructor public BasePlusCommissionEmployee(String firstName, String lastName, String socialSecurityNumber, double grossSales, double commissionRate, double baseSalary) { super(firstName, lastName, socialSecurityNumber, grossSales, commissionRate); // if baseSalary is invalid throw exception if (baseSalary < 0.0) { throw new IllegalArgumentException("Base salary must be >= 0.0"); } this.baseSalary = baseSalary; } // set base salary public void setBaseSalary(double baseSalary) { if (baseSalary < 0.0) { throw new IllegalArgumentException("Base salary must be >= 0.0"); } this.baseSalary = baseSalary; } // return base salary public double getBaseSalary() {return baseSalary;} // calculate earnings @Override public double earnings() { } // return String representation of BasePlusCommissionEmployee40 @Override public String toString() { } }

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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Related questions

Question

I want the class, BasePlusCommissionEmployee, to contain a reference to a CommisionEmployee object. Instead of the inheritance.

*Code in Question below*

public class CommissionEmployee {

private final String firstName;

private final String lastName;

private final String socialSecurityNumber;

private double grossSales; // gross weekly sales

private double commissionRate; // commission percentage

// five-argument constructor

public CommissionEmployee(String firstName, String lastName,

String socialSecurityNumber, double grossSales,

double commissionRate) {

// implicit call to Object constructor occurs here

// if grossSales is invalid throw exception

if (grossSales < 0.0) {

throw new IllegalArgumentException("Gross sales must be >= 0.0");

}

// if commissionRate is invalid throw exception

if (commissionRate <= 0.0 || commissionRate >= 1.0) {

throw new IllegalArgumentException(

"Commission rate must be > 0.0 and < 1.0");

}

this.firstName = firstName;

this.lastName = lastName;

this.socialSecurityNumber = socialSecurityNumber;

this.grossSales = grossSales;

this.commissionRate = commissionRate;

}

// return first name

public String getFirstName() {return firstName;}

// return last name

public String getLastName() {return lastName;}

// return social security number

public String getSocialSecurityNumber() {return socialSecurityNumber;}

// set gross sales amount

public void setGrossSales(double grossSales) {

if (grossSales < 0.0) {

throw new IllegalArgumentException("Gross sales must be >= 0.0");

}

this.grossSales = grossSales;

}

// return gross sales amount

public double getGrossSales() {return grossSales;}

// set commission rate

public void setCommissionRate(double commissionRate) {

if (commissionRate <= 0.0 || commissionRate >= 1.0) {

throw new IllegalArgumentException(

"Commission rate must be > 0.0 and < 1.0");

}

this.commissionRate = commissionRate;

}

// return commission rate

public double getCommissionRate() {return commissionRate;}

// calculate earnings

public double earnings()

{ return getCommissionRate() * getGrossSales(); }

// return String representation of CommissionEmployee object

@Override

public String toString() {

return String.format("%s: %s %s%n%s: %s%n%s: %.2f%n%s: %.2f",

"commission employee", getFirstName(),getLastName(),

"social security number", getSocialSecurityNumber(),

"gross sales",getGrossSales() ,

"commission rate", getCommissionRate() );

}

--------------------------------------------------------------------------------------------------------------------------------------------------

public class BasePlusCommissionEmployee extends CommissionEmployee {

private double baseSalary; // base salary per week

// six-argument constructor

public BasePlusCommissionEmployee(String firstName, String lastName,

String socialSecurityNumber, double grossSales,

double commissionRate, double baseSalary) {

super(firstName, lastName, socialSecurityNumber,

grossSales, commissionRate);

// if baseSalary is invalid throw exception

if (baseSalary < 0.0) { throw new IllegalArgumentException("Base salary must be >= 0.0");

}

this.baseSalary = baseSalary;

}

// set base salary

public void setBaseSalary(double baseSalary) {

if (baseSalary < 0.0) {

throw new IllegalArgumentException("Base salary must be >= 0.0");

}

this.baseSalary = baseSalary;

}

// return base salary

public double getBaseSalary() {return baseSalary;}

// calculate earnings

@Override

public double earnings() { }

// return String representation of BasePlusCommissionEmployee40 @Override

public String toString() {

}

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