userlistparser.java

chat system using rmi

package user.xml;

import gui.LogIn;

import java.io.File;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Scanner;
import java.util.Vector;
import javax.xml.parsers.*;
import org.xml.sax.*;
import org.xml.sax.helpers.*;

public class UserListParser extends DefaultHandler {

	UserList userL = UserList.getInstance();

	public void fromXmlFile(String file) {
		try {
			SAXParser p = SAXParserFactory.newInstance().newSAXParser();

			p.parse(new File(file), this);
		} catch (ParserConfigurationException e) {
			System.out.println("Couldn't create parser");
			e.printStackTrace();
		} catch (SAXException e) {
			System.out.println("Error parsing");
			e.printStackTrace();
		} catch (IOException e) {
			System.out.println("I/O error");
			e.printStackTrace();
		}
	}

	private String actualString = "";
	private Vector<Users> actualUsers = new Vector<Users>();
	private String actualFirstName = "";
	private String actualLastName = "";
	private String actualUsername = "";
	private String actualPassword = "";

	public void startElement(String uri, String localName, String qName,
			Attributes attributes) throws SAXException {

		actualString = "";
		
		if (qName.equals("user")) {
			actualUsers = new Vector<Users>();
			actualFirstName = "";
			actualLastName = "";
			actualUsername = "";
			actualPassword = "";
		}
	}

	public void endElement(String uri, String localName, String qName) {
			
			if (qName.equals("username")) {
				actualUsername = actualString;
				ArrayList<String> test = new ArrayList<String>();
				test.add(actualUsername);
			System.out.println(test);
			}
		
		if (qName.equals("firstname"))
			actualFirstName = actualString;
		else if (qName.equals("lastname"))
			actualLastName = actualString;
		else if (qName.equals("username")) {
			actualUsername = actualString;
			//System.out.println(actualUsername);
		
			//String usr = actualString;
			//System.out.println(usr);
		} else if (qName.equals("password")) {
			actualPassword = actualString;

		//	String pas = actualString;
		//	System.out.println(pas);
		} else if (qName.equals("user"))
			userL.addUser(new Users(actualFirstName, actualLastName,
					actualUsername, actualPassword));
			
	}
	
	public void characters(char ch[], int start, int length)
			throws SAXException {
		String s = new String(ch, start, length);
		actualString += s;
	}

	public void listUsername(String usern) {
		if (usern.equals("username")) {
			actualUsername = actualString;
		}
	}
}