www.pudn.com > SRS.rar > Person.java

// Person.java - Chapter 16 version. 
 
// Copyright 2000 by Jacquie Barker - all rights reserved. 
 
// A MODEL class. 
 
 
// We are making this class abstract because we do not wish for it 
// to be instantiated. 
 
public abstract class Person { 
	//------------ 
	// Attributes. 
	//------------ 
 
	private String name; 
	private String ssn; 
	 
	//---------------- 
	// Constructor(s). 
	//---------------- 
 
	public Person(String name, String ssn) { 
		setName(name); 
		setSsn(ssn); 
	} 
	 
	// We're replacing the default constructor that got "wiped out" 
	// as a result of having created a constructor above. 
 
	public Person() { 
		setName("?"); 
		setSsn("???-??-????"); 
	} 
 
	//----------------- 
	// Get/set methods. 
	//----------------- 
 
	public void setName(String n) { 
		name = n; 
	} 
	 
	public String getName() { 
		return name; 
	} 
	 
	public void setSsn(String ssn) { 
		this.ssn = ssn; 
	} 
	 
	public String getSsn() { 
		return ssn; 
	} 
 
	//----------------------------- 
	// Miscellaneous other methods. 
	//----------------------------- 
 
	// We'll let each subclass determine how it wishes to be 
	// represented as a String value. 
 
	public abstract String toString();  
 
	// Used for testing purposes. 
 
	public void display() { 
		System.out.println("Person Information:"); 
		System.out.println("\tName:  " + getName()); 
		System.out.println("\tSoc. Security No.:  " + getSsn()); 
	} 
}