Question

1. Create a Java project called Lab3A and a class named Lab3A.
2. Create a second new class named Employee.
3. In the Employee class:
   1. Add the following private instance variables:
      1. name (String)
      2. job (String)
      3. salary (double)
   2. Add a constructor that receives 3 parameters (one for each instance variable) and sets each instance variable equal to the corresponding variable. (Refer to the Tutorial3 program constructor if needed to remember how to do this.)
   3. Add a public String method named getName (no parameter) that returns name.
   4. Add a public double method named getSalary (no parameter) that returns salary.
   5. Add a public void method named giveRaise with a double parameter named raisePercent. It should give the employee a raise by changing the salary to be equal to salary * (1 + raisePercent).
   6. Add a public String method toString (no parameters). It should create a String variable with the employee’s instance data. (I will give you the code here, but add this to your notes, because you will do this on future assignments.)

String result = "Name: " + name + "\nJob: " + job + "\nSalary: " + salary;

return result;

4. Back in the main Lab3A class.
   1. Declare and instantiate an Employee object named helen sending the following parameters to the constructor ("Helen Lee", "Accountant", 45000.00)
   2. Declare and instantiate an Employee object named brandon sending the following parameters to the constructor ("Brandon Charles", "Analyst", 48000.00)
   3. Call getName for the helen object and print the returned value.
      ( System.out.println(helen.getName());   )
   4. Call getSalary for the helen object and print the returned value.
   5. Call getName for the brandon object and print the returned value.
   6. Give helen a 15% raise by calling the giveRaise method for helen and sending 0.10 as the parameter. (You don’t print anything here.)
   7. Give brandon a 10% raise.
   8. Use our super-secret toString shortcut to print all of helen’s information.

( System.out.println(helen);    )

Add System.out.println(); right after it to add a blank line.

1. Use the same coding to print all of brandon’s info.
   10. If you run this, you’ll see that the salaries print a lot of decimal places after the raises. Let’s go back to the toString method and fix this. (Add this to your notes for future use.)

String result = "Name: " + name + "\nJob: " + job + "\nSalary: " + String.format("$%,.2f",salary);

Your output should be:

Helen Lee

45000.0

Brandon Charles

Name: Helen Lee

Job: Accountant

Salary: $51,750.00

Name: Brandon Charles

Job: Analyst

Salary: $52,800.00

Answer 1

Program

//class Employee
class Employee
{
   //instance variables
   private String name;
   private String job;
   private double salary;
  
   //parameterized constructor
   public Employee(String name, String job, double salary)
   {
       this.name = name;
       this.job = job;
       this.salary = salary;
   }
  
   //method to return the name of Employee
   public String getName()
   {
       return name;
   }
  
   //method to return the salary of Employee
   public double getSalary()
   {
       return salary;
   }
  
   //method to raise the salary of Employee
   public void giveRaise(double raisePercent)
   {
       salary = salary *(1 + raisePercent);
   }
  
   //method return String contains Employee information
   public String toString()
   {
       String result = "Name: " + name + "\nJob: " + job + "\nSalary: " +
           String.format("$%,.2f",salary);
       return result;
   }
}

//Lab3A class
class Lab3A
{
   //main method
   public static void main (String[] args) {
      
       //Declare and instantiate an Employee object named helen
       Employee helen = new Employee("Helen Lee", "Accountant", 45000.00);
       //Declare and instantiate an Employee object named brandon
       Employee brandon = new Employee("Brandon Charles", "Analyst", 48000.00);
       //Call getName for the helen object and print the returned value
       System.out.println(helen.getName());
       //Call getSalary for the helen object and print the returned value.
       System.out.println(helen.getSalary());
       //Call getName for the brandon object and print the returned value.
       System.out.println(brandon.getName());
       //Give helen a 15% raise by calling the giveRaise method for helen
       helen.giveRaise(0.15);
       //Give brandon a 10% raise by calling the giveRaise method for brandon
       brandon.giveRaise(0.10);
       //print all of helen’s information
       System.out.println(helen);
       //print all of brandon's information
       System.out.println(brandon);
   }
}

Output:

Helen Lee
45000.0
Brandon Charles
Name: Helen Lee
Job: Accountant
Salary: $51,750.00
Name: Brandon Charles
Job: Analyst
Salary: $52,800.00

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