Write a program to enter employee data, including Social Security number and salary, into an array. The maximum number of employees is 100, but your program should also work for any number of employees less than 100. Your program should use two exception classes, one called SSNLengthException for when the Social Security number entered without dashes or spaces—is not exactly nine characters and the other called SSNCharacterException for when any character in the Social Security number is not a digit. When an exception is thrown, the user should be reminded of what she or he entered, told why it is inappropriate, and asked to reenter the data. After all data has been entered, your program should display the records for all employees, with an annotation stating whether the employee’s salary is above or below average. You will also need to define the classes Employee, SSNLengthException, and SSNCharacterException. Derive the class Employee from the class Person in Listing 8.1 of Chapter 8. Among other things, the class Employee should have input and output methods, as well as constructors, accessor methods, and mutator methods. Every Employee object should record the employee’s name (as defined in Person), salary, and Social Security number, as well as any other data you need or think is appropriate.

Listing 8.1

public class Person
{
private String name;
public Person()
{
name = "No name yet";
}
public Person(String initialName)
{
name = initialName;
}
public void setName(String newName)
{
name = newName;
}
public String getName()
{
return name;
}
public void writeOutput()
{
System.out.println("Name: " + name);
}
public boolean hasSameName(Person otherPerson)
{
return this.name.equalsIgnoreCase(otherPerson.name);
}
}