// Person.java
//
// Informatics 102 Spring 2012
// Assignment #1
//
// NOTE: You may not modify this code in any way.  All changes to this
// class must be introduced by your aspect!


public class Person
{
	private String firstName;
	private String lastName;


	public Person(String firstName, String lastName)
	{
		changeName(firstName, lastName);
	}


	public String getFirstName()
	{
		return firstName;
	}
	
	
	public String getLastName()
	{
		return lastName;
	}


	public void changeName(String newFirstName, String newLastName)
	{
		if (newFirstName == null || newLastName == null)
		{
			throw new IllegalArgumentException("null person names not allowed");
		}

		firstName = newFirstName;
		lastName = newLastName;
	}


	public boolean equals(Object o)
	{
		if (o == null)
		{
			return false;
		}

		Person p = (Person) o;
		
		return firstName.equals(p.firstName) && lastName.equals(p.lastName);
	}
}