Vector Exercise

• Given a class called Person with three instance variables (name, SSN, address), a public method getSSN that returns a string representing the social security number, and a public method showPerson that displays all of the instance variables,
• Create a new class called personVector that satisfies the following requirements:

instance variables:

• a Vector called personVect using the no-argument constructor.

methods:

• a utility method called locatePerson that searches the list of people (personVect) for a particular social security number (passed to the routine as a String parameter) and returns the index of that element.
• a public method called addPerson that accepts name, SSN, and address as parameters and adds a new Person to personVect
• a public method called removePerson that accepts a SSN as an argument and locates a Person in the personVect (using locatePerson) and removes that element (if the vector is not empty and if the index returned is valid)
• a public method called showPersonList that prints a Person object at the specified index (parameter) from personVect.
  

// locate Person in a vector and return the index
private int locatePerson ( String searchSSN ) 
{
     int index = -1;               // initialize to one less than smallest index
     boolean found = false;

     while ( !found && ++index < personVect.size( ) ) 
     {
          found = searchSSN.equals ( ((Person) personVect.elementAt(index)).getSSN ( ) );
     }

     if (found) return index;
     else return -1;
} // end locatePerson

public class Person 
{
     private String name;
     private String SSN;
     private String address;

     public Person ( ) 
     {
          name = " ";
          SSN = "000-00-0000";
          address = " ";
     }

     public Person ( String name, String SSN, String address ) 
     {
          this.name = name;
          this.SSN = SSN;
          this.address = address;
     }

     public String getSSN ( ) 
     {
          return SSN;
     }

     // Return String with values of instance variables
     public String showPerson( )
     {
          return "" + name + " with SSN " + SSN + " lives at " + address;
     } // end showPerson
}

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