New Java Tutorial [CommissionEmployee.java] – Part I

// Fig. 9.4: CommissionEmployee.java
// CommissionEmployee class represents a commission employee.

public class CommissionEmployee extends Object
{
private String firstName;
private String lastName;
private String socialSecurityNumber;
private double grossSales; // gross weekly sales
private double commissionRate; // commission percentage
// five-argument constructor

public CommissionEmployee( String first, String last, String ssn,
double sales, double rate )
{
// implicit call to Object constructor occurs here
firstName = first;
lastName = last;
socialSecurityNumber = ssn;
setGrossSales( sales ); // validate and store gross sales
setCommissionRate( rate ); // validate and store commission rate
} // end five-argument CommissionEmployee constructor

// set first name
public void setFirstName( String first )
{
firstName = first;
} // end method setFirstName

// return first name
public String getFirstName()
{
return firstName;
} // end method getFirstName

// set last name
public void setLastName( String last )
{
lastName = last;
} // end method setLastName

// return last name
public String getLastName()
{
return lastName;
} // end method getLastName

// set social security number
public void setSocialSecurityNumber( String ssn )
{
socialSecurityNumber = ssn; // should validate
} // end method setSocialSecurityNumber

// return social security number
public String getSocialSecurityNumber()
{
return socialSecurityNumber;
} // end method getSocialSecurityNumber

// set gross sales amount
public void setGrossSales( double sales )
{
grossSales = ( sales < 0.0 ) ? 0.0 : sales;
} // end method setGrossSales

// return gross sales amount
public double getGrossSales()
{
return grossSales;
} // end method getGrossSales

// set commission rate
public void setCommissionRate( double rate )
{
commissionRate = ( rate > 0.0 && rate < 1.0 ) ? rate : 0.0;
} // end method setCommissionRate

// return commission rate
public double getCommissionRate()
{
return commissionRate;
} // end method getCommissionRate

// calculate earnings
public double earnings()
{
return commissionRate * grossSales;
} // end method earnings

// return String representation of CommissionEmployee object
public String toString()
{
return String.format( “%s: %s %s\n%s: %s\n%s: %.2f\n%s: %.2f”,
“commission employee”, firstName, lastName,
“social security number”, socialSecurityNumber,
“gross sales”, grossSales,
“commission rate”, commissionRate );
} // end method toString
} // end class CommissionEmployee

1 Comment »

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