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// CollectionWrapper.java - Chapter 16 version. 
 
// Copyright 2000 by Jacquie Barker - all rights reserved. 
 
// An IMPLEMENTATION class. 
 
import java.io.*; 
 
public abstract class CollectionWrapper { 
	private String pathToFile; 
 
	public boolean initializeObjects(String pathToFile, boolean primary) { 
		this.pathToFile = pathToFile; 
		String line = null; 
		BufferedReader bIn = null; 
		boolean outcome = true; 
 
		try { 
			// Open the file.  
			bIn = new BufferedReader(new FileReader(pathToFile)); 
 
		    	line = bIn.readLine(); 
		    	while (line != null) { 
			        if (primary) parseData(line); 
			        else parseData2(line); 
		    		line = bIn.readLine(); 
			} 
 
			bIn.close(); 
		} 
		catch (FileNotFoundException f) { 
			outcome = false; 
		} 
		catch (IOException i) { 
			outcome = false; 
		} 
 
		return outcome; 
	} 
 
	public abstract void parseData(String line); 
	public abstract void parseData2(String line); 
}