Help with Output.

[Ann Frank]

Hello~

I feel like I'm overlooking something very simple.
But I've been working on this assignment for hours already and I still don't get how I'm able to do it.
Anyways, the whole assignment is to revise a code. To add make the user add data. And that I' am required to write a GUI program instead of a console program.
I think I've done most of it right...
But I'm just blocked as to how I'm going to finish it. I've already searched so many forums but they've been only giving me simple solutions that is all under one class.

So the assignment tells me that:
After all data are entered, loop through the array again and output the payroll by calling employee.toString() and employee.earnings().

Ok, so that means I have to create the same for statement as I used for the code below right?

 for (i = 0; i < employees.length; i++)
	    {
	    	employees[i].enterData();
	    }

But I'm just stumped on how I'm going to do that.

Also he wants me to Append the output into a String.
JOptionPane.showInputDialog
Which means (firstName+ " " + lastName) So adding a space in between it.

And call JoptionPane.showMessageDialog() after the loop.
I was able to call the output, but how 'am I able to Append the String firstName, String lastName is in a different class.

To be honest, I'm just so lost in my Java online class... Its not really a class when I don't get to learn anything and its disappointing when I really wanted to learn, and be proficient at it. He just makes us read the book and do the assignments, and if we do ask questions he makes us read the book again.

Here are the codes:

package assign9;

import javax.swing.JOptionPane;

public class assign9 
{
	//Main
	public static void main (String[]args)
	{	
		//4 Subclass
		SalariedEmployee salariedEmployee = 
				new SalariedEmployee ("John","Smith","111-11-1111", 800.00);
	
		HourlyEmployee hourlyEmployee =
				new HourlyEmployee("Karen","Price", "222-22-2222",16.75, 0);
		
		CommissionEmployee commissionEmployee = 
		         new CommissionEmployee( "Sue", "Jones", "333-33-3333", 0, .06);
		
		BasePlusCommissionEmployee basePlusCommissionEmployee = 
		         new BasePlusCommissionEmployee("Bob", "Lewis", "444-44-4444", 0, .04, 300);
		
		//Array
	    Employee[] employees = new Employee[4];
	    
	    int i;
	    employees[0] = salariedEmployee;
	    employees[1] = hourlyEmployee;
	    employees[2] = commissionEmployee;
	    employees[3] = basePlusCommissionEmployee;
	   
	  
	    //To Enter Data
	    for (i = 0; i < employees.length; i++)
	    {
	    	employees[i].enterData();
	    }
	   
	   
	    
	    //Show Message
	    JOptionPane.showMessageDialog
	    	(null, employees);
}//End Main
}//End Assign 9

package assign9;
// Fig. 10.4: Employee.java
// Employee abstract superclass.

public abstract class Employee 
{
   public static boolean enterData;
private final String firstName;
   private final String lastName;
   private final String socialSecurityNumber;

   // constructor
   public Employee(String firstName, String lastName, 
      String socialSecurityNumber)
   {
      this.firstName = firstName;                                    
      this.lastName = lastName;                                    
      this.socialSecurityNumber = socialSecurityNumber;         
   } 

   // 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;
   } 

   // return String representation of Employee object
   @Override
   public String toString()
   {
      return String.format("%s %s%nSocial Security Number: %s", 
         getFirstName(), getLastName(), getSocialSecurityNumber());
   } 

   // abstract method must be overridden by concrete subclasses
   public abstract double earnings(); // no implementation here

public void enterData() 
{
	
	
}
} // end abstract class Employee

package assign9;
// Fig. 10.5: SalariedEmployee.java
// SalariedEmployee concrete class extends abstract class Employee.

public class SalariedEmployee extends Employee 
{
   private double weeklySalary;

   // constructor
   public SalariedEmployee(String firstName, String lastName, 
      String socialSecurityNumber, double weeklySalary)
   {
      super(firstName, lastName, socialSecurityNumber); 

      if (weeklySalary < 0.0)
         throw new IllegalArgumentException(
            "Weekly salary must be >= 0.0");

      this.weeklySalary = weeklySalary;
   } 

   // set salary
   public void setWeeklySalary(double weeklySalary)
   {
      if (weeklySalary < 0.0)
         throw new IllegalArgumentException(
            "Weekly salary must be >= 0.0");

      this.weeklySalary = weeklySalary;
   } 

   // return salary
   public double getWeeklySalary()
   {
      return weeklySalary;
   } 

   // calculate earnings; override abstract method earnings in Employee
   @Override                                                           
   public double earnings()                                            
   {                                                                   
      return getWeeklySalary();                                        
   }                                             

   // return String representation of SalariedEmployee object   
   @Override                                                    
   public String toString()                                     
   {                                                            
      return String.format("Salaried employee: %s%n%s: $%,.2f",
         super.toString(), "Weekly salary", getWeeklySalary());
   } 
} // end class SalariedEmployee

package assign9;
// Fig. 10.6: HourlyEmployee.java
// HourlyEmployee class extends Employee.

import javax.swing.JOptionPane;

public class HourlyEmployee extends Employee 
{
   private double wage; // wage per hour
   private double hours; // hours worked for week

   // constructor
   public HourlyEmployee(String firstName, String lastName,
      String socialSecurityNumber, double wage, double hours)
   {
      super(firstName, lastName, socialSecurityNumber);

      if (wage < 0.0) // validate wage
         throw new IllegalArgumentException(
            "Hourly wage must be >= 0.0");

      if ((hours < 0.0) || (hours > 168.0)) // validate hours
         throw new IllegalArgumentException(
            "Hours worked must be >= 0.0 and <= 168.0");

      this.wage = wage;
      this.hours = hours;
   } 

   // set wage
   public void setWage(double wage)
   {
      if (wage < 0.0) // validate wage
         throw new IllegalArgumentException(
            "Hourly wage must be >= 0.0");

      this.wage = wage;
   } 

   // return wage
   public double getWage()
   {
      return wage;
   } 

   // set hours worked
   public void setHours(double hours)
   {
      if ((hours < 0.0) || (hours > 168.0)) // validate hours
         throw new IllegalArgumentException(
            "Hours worked must be >= 0.0 and <= 168.0");

      this.hours = hours;
   } 

   // return hours worked
   public double getHours()
   {
      return hours;
   } 

   // calculate earnings; override abstract method earnings in Employee
   @Override                                                           
   public double earnings()                                            
   {                                                                   
      if (getHours() <= 40) // no overtime                           
         return getWage() * getHours();                                
      else                                                             
         return 40 * getWage() + (getHours() - 40) * getWage() * 1.5;
   }                                          

   // return String representation of HourlyEmployee object              
   @Override                                                             
   public String toString()                                              
   {                                                                     
      return String.format("Hourly employee: %s%n%s: $%,.2f; %s: %,.2f",
         super.toString(), "Hourly wage", getWage(),                     
         "Hours worked", getHours());                                   
   }
@Override
   public void enterData() 
   {
   	String add;
   	add = JOptionPane.showInputDialog
   			("Please Enter the Hours Worked by " 
   					+"Hourly Employee: " + getFirstName() + getLastName() +
   					"\nSocial Security Number: " +getSocialSecurityNumber() +
   					"\nHourly Wage: " + getWage() + 
   					"\nHours Worked: " +getHours());
   		
   		//Place Entered Hours in setHours()
   		setHours(Integer.parseInt(add));
   }           
} // end class HourlyEmployee

package assign9;
// Fig. 10.7: CommissionEmployee.java
// CommissionEmployee class extends Employee.

import javax.swing.JOptionPane;

public class CommissionEmployee extends Employee 
{
   private double grossSales; // gross weekly sales
   private double commissionRate; // commission percentage

   // constructor
   public CommissionEmployee(String firstName, String lastName, 
      String socialSecurityNumber, double grossSales, 
      double commissionRate)
   {
      super(firstName, lastName, socialSecurityNumber);

      if (commissionRate <= 0.0 || commissionRate >= 1.0) // validate 
         throw new IllegalArgumentException(
            "Commission rate must be > 0.0 and < 1.0");

      if (grossSales < 0.0) // validate
         throw new IllegalArgumentException("Gross sales must be >= 0.0");

      this.grossSales = grossSales;
      this.commissionRate = commissionRate;
   } 

   // set gross sales amount
   public void setGrossSales(double grossSales)
   {
      if (grossSales < 0.0) // validate
         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) // validate
         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; override abstract method earnings in Employee
   @Override                                                           
   public double earnings()                                            
   {                                                                   
      return getCommissionRate() * getGrossSales();                    
   }                                             

   // return String representation of CommissionEmployee object
   @Override                                                   
   public String toString()                                    
   {                                                           
      return String.format("%s: %s%n%s: $%,.2f; %s: %.2f",    
         "Commission employee", super.toString(),              
         "Gross Sales", getGrossSales(),                       
         "Commission Rate", getCommissionRate());             
   }

public void enterData() 
{

	String add;
		add =JOptionPane.showInputDialog
			("Please Enter the Gross Sales by " 
					+"Commission Employee: " +getFirstName() + getLastName() + 
					"\nSocial Security Number: " +getSocialSecurityNumber() +
					"\nGross Sales: " + getGrossSales()+
					"\nCommission Rate: " + getCommissionRate());
		
		//Place Entered Gross Sales to setGrossSales()
		setGrossSales(Double.parseDouble(add));
} 
} // end class CommissionEmployee

package assign9;
// Fig. 10.8: BasePlusCommissionEmployee.java
// BasePlusCommissionEmployee class extends CommissionEmployee.

import javax.swing.JOptionPane;

public class BasePlusCommissionEmployee extends CommissionEmployee 
{
   private double baseSalary; // base salary per week

   // constructor
   public BasePlusCommissionEmployee(String firstName, String lastName, 
      String socialSecurityNumber, double grossSales,
      double commissionRate, double baseSalary)
   {
      super(firstName, lastName, socialSecurityNumber, 
         grossSales, commissionRate);

      if (baseSalary < 0.0) // validate baseSalary                  
         throw new IllegalArgumentException("Base salary must be >= 0.0");
            
      this.baseSalary = baseSalary;                
   }

   // set base salary
   public void setBaseSalary(double baseSalary)
   {
      if (baseSalary < 0.0) // validate baseSalary                  
         throw new IllegalArgumentException("Base salary must be >= 0.0");
            
      this.baseSalary = baseSalary;                
   } 

   // return base salary
   public double getBaseSalary()
   {
      return baseSalary;
   }

   // calculate earnings; override method earnings in CommissionEmployee
   @Override                                                            
   public double earnings()                                             
   {                                                                    
      return getBaseSalary() + super.earnings();                        
   } 

   // return String representation of BasePlusCommissionEmployee object
   @Override                                                           
   public String toString()                                            
   {                                                                   
      return String.format("%s %s; %s: $%,.2f",                       
         "Base-salaried", super.toString(),                            
         "Base salary", getBaseSalary());                             
   } 
   
   @Override
   public void enterData() 
   {
   	//Add #4
   	String add;
   		add = JOptionPane.showInputDialog
   			("Please Enter the gross sales by" +
   					"\nBase-Salaried Commission Employee: " +getFirstName() + getLastName() +
   					"\nSocial Security Number: " +getSocialSecurityNumber() +
   					"\nGross Sales: " +getGrossSales() +
   					"\nCommission Rate: " +getCommissionRate() +
   					"\nBase Salary: " +getBaseSalary());
   		
   		//Place Entered Gross Sales into setGrossSales()
   		setGrossSales(Double.parseDouble(add));
   } 
} // end class BasePlusCommissionEmployee

[Liutauras Vilda]

Welcome to the Ranch.

Ann Frank wrote:the whole assignment is to revise a code...
I think I've done most of it right...

Revised it rightly? Misunderstood if you wrote it or you have been given all this. Nevermind.

Ann Frank wrote:So the assignment tells me that:

Instructions wrote:
After all data are entered, loop through the array again and output the payroll by calling employee.toString() and employee.earnings()

What exactly you don't understand from the sentence above?

Please show us your attempt and the outcome:
1. Inputs
2. Expected outputs
3. Actual outputs
4. Errors if any (copy/paste)

[Paul Clements]

Ann Frank wrote:After all data are entered, loop through the array again and output the payroll by calling employee.toString() and employee.earnings().

Ok, so that means I have to create the same for statement as I used for the code below right?

 for (i = 0; i < employees.length; i++)
	    {
	    	employees[i].enterData();
	    }

If I get time I'll take a look at all of your code. For now though I'll say just this...use an enhanced for loop when processing an array, especially if you're just reading and not manipulating array content i.e.

for (Employee emp : employees) {
    emp.enterData();
}

[Ann Frank]

Liutauras Vilda wrote:Welcome to the Ranch.

Ann Frank wrote:the whole assignment is to revise a code...
I think I've done most of it right...

Revised it rightly? Misunderstood if you wrote it or you have been given all this. Nevermind.

Ann Frank wrote:So the assignment tells me that:

Instructions wrote:
After all data are entered, loop through the array again and output the payroll by calling employee.toString() and employee.earnings()

What exactly you don't understand from the sentence above?

Please show us your attempt and the outcome:
1. Inputs
2. Expected outputs
3. Actual outputs
4. Errors if any (copy/paste)

Thank You, and I'm sorry for the confusion. What I meant is that the Assignment wants to Modify it.

These are the codes that I added to it and the rest was given.

 public void enterData() 
   {
   	String add;
   	add = JOptionPane.showInputDialog
   			("Please Enter the Hours Worked by " 
   					+"Hourly Employee: " + getFirstName() + getLastName() +
   					"\nSocial Security Number: " +getSocialSecurityNumber() +
   					"\nHourly Wage: " + getWage() + 
   					"\nHours Worked: " +getHours());
   		
   		//Place Entered Hours in setHours()
   		setHours(Integer.parseInt(add));
   }     

public void enterData() 
{

	String add;
		add =JOptionPane.showInputDialog
			("Please Enter the Gross Sales by " 
					+"Commission Employee: " +getFirstName() + getLastName() + 
					"\nSocial Security Number: " +getSocialSecurityNumber() +
					"\nGross Sales: " + getGrossSales()+
					"\nCommission Rate: " + getCommissionRate());
		
		//Place Entered Gross Sales to setGrossSales()
		setGrossSales(Double.parseDouble(add));
} 

   public void enterData() 
   {
   	//Add #4
   	String add;
   		add = JOptionPane.showInputDialog
   			("Please Enter the gross sales by" +
   					"\nBase-Salaried Commission Employee: " +getFirstName() + getLastName() +
   					"\nSocial Security Number: " +getSocialSecurityNumber() +
   					"\nGross Sales: " +getGrossSales() +
   					"\nCommission Rate: " +getCommissionRate() +
   					"\nBase Salary: " +getBaseSalary());
   		
   		//Place Entered Gross Sales into setGrossSales()
   		setGrossSales(Double.parseDouble(add));
   } 

  //To Enter Data
	    for (i = 0; i < employees.length; i++)
	    {
	    	employees[i].enterData();
	    }

  //Show Message
	    JOptionPane.showMessageDialog
	    	(null, employees);

What exactly you don't understand from the sentence above?

After all data are entered,
The data that was inputted because of employees[i]enterData(); right?
loop through the Array again, then output the payroll calling employee.toString() and employee.earnings().
So, Use a loop with the same array as employees[i].enterData(); then call employee.toString() and employee.earnings()?
How do I call employee.toString() and employee.earnings()?
So something like

System.out.println(employee.toString());

or

Employee.toString();

? It don't think this is right, plus it shows it as a console instead and in the GUI it doesn't do anything.

I'm sorry if I can't even understand this, I'm really annoyed at myself being able to grasp this.

[Ann Frank]

Paul Clements wrote:

Ann Frank wrote:After all data are entered, loop through the array again and output the payroll by calling employee.toString() and employee.earnings().

Ok, so that means I have to create the same for statement as I used for the code below right?

 for (i = 0; i < employees.length; i++)
	    {
	    	employees[i].enterData();
	    }

If I get time I'll take a look at all of your code. For now though I'll say just this...use an enhanced for loop when processing an array, especially if you're just reading and not manipulating array content i.e.

for (Employee emp : employees) {
    emp.enterData();
}

Got it.
I changed it so now it looks like

 for (Employee emp : employees)
	    {
	    	emp.enterData();
	    }

It seems like the question asks me to just do what I did for emp.enterData(); like this:

for (Employee emp : employees)
{
   employees.toString();
}

But it seems too simple and I'm surely missing something because that doesn't change anything.