Employee.java

public abstract class Employee implements Payable{

	private String firstName;
	private String lastName;
	private String socialSecurityNumber;
	public Employee(String firstName,String lastName,String socialSecurityNumber) {
		this.firstName=firstName;
		this.lastName=lastName;
		this.socialSecurityNumber=socialSecurityNumber;
	}
	public String getFirstName() {
		return firstName;
	}
	public void setFirstName(String firstName) {
		this.firstName = firstName;
	}
	public String getLastName() {
		return lastName;
	}
	private void setLastName(String lastName) {
		this.lastName = lastName;
	}
	public String getSocialSecurityNumber() {
		return socialSecurityNumber;
	}
	private void setSocialSecurityNumber(String socialSecurityNumber) {
		this.socialSecurityNumber = socialSecurityNumber;
	}
	public String toString() {
	   return getFirstName()+" "+getLastName()+"\n"+
	          "social security number: "+getSocialSecurityNumber();
	}
    
	
}