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

class InFile 
{
  boolean mIsOkay;
	private URL mInFile;
	private URLConnection mConnection;
	private DataInputStream mInData;
	private String mStrLine;

  public InFile()
	{
	  mIsOkay=false;
	}
	public InFile(URL resBase,String strHostPathFileName)throws Exception
	{
	  open(resBase,strHostPathFileName);
	}
	public void open(URL resBase,String strHostPathFileName)throws Exception
	{
	  close();
		try{mInFile=new URL(resBase,strHostPathFileName);}
		catch(Exception exception){throw new Exception();}
		try{mConnection=mInFile.openConnection();}
		catch(Exception exception){throw new Exception();}
		try{mInData=new DataInputStream(mConnection.getInputStream());}
		catch(Exception exception){throw new Exception();}
		mIsOkay=true;
	}
	public void close()
	{
	  if(!isOkay())return;
		try{mInData.close();}
		catch(Exception exception){;}
		mIsOkay=false;
	}
	public String readLine()throws Exception
	{
	  if(!isOkay())throw new Exception();
		try{mStrLine=new String(mInData.readLine());}
		catch(Exception exception){throw new Exception();}
		return mStrLine;
	}
	public boolean isOkay()
	{
	  return mIsOkay;
	}
};



/*		URL inFile;
		URLConnection connection;
		DataInputStream inData;
		String strLine;
		
		try{inFile=new URL(getCodeBase(),"ip");}
		catch(Exception exception){mStrString=new String("Error creating URL");showStatus(mStrString);repaint();return;}
		try{connection=inFile.openConnection();}
		catch(Exception exception){mStrString=new String("Error in URL connection.");showStatus(mStrString);repaint();return;}
		connection.setUseCaches(false);
		try{inData=new DataInputStream(connection.getInputStream());}
		catch(Exception exception){mStrString=new String("Error getting input stream.");showStatus(mStrString);repaint();return;}
		try{strLine=new String(inData.readLine());inData.close();}
		catch(Exception exception){mStrString=new String("Error reading data input stream.");showStatus(mStrString);repaint();return;}
		mStrString=new String(strLine);
		repaint();
	*/