// Written by:	Darren Gates & Ray Klefstad
// Date:	January 2000
// School:	U.C. Irvine

import java.awt.*;
import java.awt.event.*;
import java.io.*;

public class FileInputandOutputExample
    extends Frame
{
    public static void main(String argv[])
    {
        Frame myFrame = new Frame();
        myFrame.addWindowListener(new CloseFrame());
        myFrame.setBounds(100,100,400,300);
        myFrame.add(new FileLoader());
        myFrame.show();
    }
}

class CloseFrame
    extends WindowAdapter
{
    public void windowClosing(WindowEvent e)
    {
        System.exit(0);
     }
}

class FileLoader
    extends Panel
    implements ActionListener
{
    private Button b = new Button("Load");
    private TextField t = new TextField(20);

    public FileLoader()
    {
        add(b);
        add(t);
        b.addActionListener(this);
    }

    public void actionPerformed(ActionEvent e)
    {
        try
        {
            String inFile = t.getText();
            String outFile = "output.txt";

            BufferedReader br
 	        = new BufferedReader(new FileReader(inFile));

            PrintWriter pw
                 = new PrintWriter(new BufferedWriter(new FileWriter(outFile)));

            String s;

            for (int i = 0; (s = br.readLine()) != null; i++)
            {
                pw.println(i + ": " + s);
            }

            br.close();
            pw.close();
        }
        catch(IOException error)
        {
            t.setText("File Error");
        }
    }
}