Help with network programming

[Rearden]

What happens if you call openStream twice? I have this code in which I open up a weather xml page and get information out of it. Unfortunately, the way I do it has me doing a linear search down the page for the line I need each time I want something - it should be pretty straightforward by looking at my code. However, I think the getElement method is downloading the page again and again each time I call it when all I realy want to do is download it, find what I need then be able to find the next thing I need and only redownload it when I explicitly want to. Can anyone just take a quick look at what I am doing wrong? This is my first program with any type of networking connection - and no, this isn't homework, just my own personal amusement.

-Thanks

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

class NOAAWeatherReader
{

private final String stationURLPrefix = "http://www.weather.gov/data/current_obs/";
private final String stationURLSuffix = ".xml";
private URL stationURL;
private InputStream is;
private BufferedReader weatherReader;

public NOAAWeatherReader(String stationID)
{
try
	{
	stationURL = new URL(stationURLPrefix + stationID + stationURLSuffix);
	}

catch(MalformedURLException e)
	{
	System.out.println(e);
	}
downloadPage();

}//constructor


private void init()
{
downloadPage();
weatherReader = new BufferedReader(new InputStreamReader(is));
}//init


private void downloadPage()
{
try
	{
	is = stationURL.openStream();
	}

catch(IOException e)
	{
	System.out.println(e);
	}
}//downloadPage

private String getLine(String xmlElement) throws ElementNotFoundException
{
init();
String elementLine = "";
boolean elementFound = false;

try
{
while((elementLine = weatherReader.readLine()) != null)
	{
	if(elementLine.indexOf(xmlElement) != -1)//elementLine contains xmlElement
		{
		elementFound = true;
		break;
		}
	}
}

catch(IOException e)
{
System.out.println(e);
}

if(elementFound == false)
	{
	throw new ElementNotFoundException(xmlElement + " was not found in the document");
	}
return elementLine;
}//getLine

public String getElement(String xmlElement)
{

String line = "";

try
{
line = getLine(xmlElement);
}

catch(ElementNotFoundException e)
	{
	System.err.println("The xml element: \"" + xmlElement + "\" was not found.");
	}

int start = line.indexOf('>') + 1;
String returnString = line.substring(start,(line.length() - xmlElement.length()) - 3);

return returnString;

}//getElement

private void close()
{
try
{
weatherReader.close();
is.close();
}
catch(Exception e)
{
System.out.println(e);
}

}

public static void main(String[] args)
{
NOAAWeatherReader nRead = new NOAAWeatherReader("KROC");
System.out.println(nRead.getElement("temp_f"));
System.out.println(nRead.getElement("wind_mph"));
nRead.close();
System.exit(0);
}

}//NOAAWeatherReader