/**
 * From my Person class
 * pull person info out of passed string (updating invoking Person), 
 * and return StringTokenizer, so if any 
 * info left on the line it, to, can be extracted.
 * Requires import of:
 * import java.util.StringTokenizer;
 */
public StringTokenizer parsePerson (String line) {
    
        StringTokenizer tokenizer;
             
        // break it into parts - token by token                
        tokenizer = new StringTokenizer(line,",");
                    
        String field = tokenizer.nextToken(); 
        pID = new Id(field);
        
        field = tokenizer.nextToken();
        setFirst(field);
        
        field = tokenizer.nextToken();
        setLast(field);
        
        field = tokenizer.nextToken();
        this.setAddress(field);
        
        field = tokenizer.nextToken();
        setCity(field);
        
        field = tokenizer.nextToken();
        this.setState(field);
        
        field = tokenizer.nextToken();
        this.setZip(field); 
        
        return tokenizer;
}