collectionwrapper.java

一个美国教授写得很好的java学生管理系统

// CollectionWrapper.java - Chapter 16 version.

// Copyright 2000 by Jacquie Barker - all rights reserved.

// An IMPLEMENTATION class.
package DataInterface;

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);
}