Someone

import java.io.*;
import java.util.*;

public class PetCount {

	public static void main( String[] args ){
		try {
			
			HashMap<String, Integer> pets = new HashMap<String, Integer>();
			
			String line;
			boolean onPet = false;		
			File fileName = new File("pets.txt");
			  
	        BufferedReader fileIn = new BufferedReader(new FileReader(fileName));
	        
	        while (( line = fileIn.readLine()) != null){         
	        	if( !line.trim().equals("")) {
	        		if( line.equals("<pet>") )
	        			onPet = true;
	        		else if( line.equals("</pet>") )
	        			onPet = false;
	        		else if( onPet ){
	        			if( line.contains("<type>")){
	        				String type = line.replaceAll("<type>", "");
	        				type = type.replaceAll("</type>", "").trim();
	        				if( pets.containsKey( type ) ) {
	        					pets.put(type, (Integer)(pets.get(type)) + 1);
	        				}else{
	        					pets.put(type, 1);
	        				}
	        			}
	        		}
	        			
	        	}	        	
	        }
	        
	        int sum = 0;
	        Set<String> keys = pets.keySet();
	        Iterator<String> It = keys.iterator();
	        while (It.hasNext()) {
	        	String currKey = (String)(It.next());
	        	System.out.println("Pets of type " + currKey + ": " + pets.get(currKey));
	        	sum = sum + (Integer)pets.get(currKey);
	        }
	        System.out.println( "Total pets: " + sum );
		}
		catch (FileNotFoundException e) {
			System.err.println( "File cannot be found." );
		}
		catch (IOException e) {
			System.err.println( "File cannot be read." );
		}
	}
	
}