/* ReadaFile is simple file reader for JavaPlugin. 
                          M. Gallant   03/27/2002
 */

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

public class ReadaFile extends Applet implements ActionListener {
    int strings = 0;
    private TextArea ta = new TextArea (35, 80);
    Button startbutton = new Button("Display File") ;
    Button clearbutton = new Button("CLEAR") ;
    TextField  filename = new TextField(25) ;

  public void init() {
  this.setLayout(new BorderLayout(10,10));
     Panel p1 = new Panel() ; 
     this.setBackground(new Color(192, 192, 192)) ;
      p1.add(new Label("File Name:", Label.RIGHT)) ;
      p1.add(filename);
      p1.add(startbutton);
      p1.add(clearbutton);
      startbutton.setBackground(Color.red) ;
      startbutton.addActionListener(this) ;
      clearbutton.addActionListener(this) ;
      add(p1, BorderLayout.NORTH) ;
      add(ta,  BorderLayout.CENTER) ;
     }


  public void actionPerformed(ActionEvent evt) {
   if(evt.getSource() == clearbutton) {
     ta.setText("");
     filename.setText("");
    }
     if( evt.getSource() == startbutton ) {
      displayFile(filename.getText()); ;
    }
  }


private void displayFile(String filename) {
 String aline= "" ; 
 BufferedReader buff = null;
 ta.append("----- Reading file: " + filename + " -----\n\n") ;
 try {
   buff = new BufferedReader(new FileReader(filename) );
   while( (aline=buff.readLine()) != null)
     ta.append(aline + "\n");
  }

    catch(Exception ioe) {
       ta.append("Problem opening or reading file\n" + ioe+ "\n") ;
      }

  finally {
      if(buff !=null)
       try {
          buff.close() ; 
          ta.append("\n ---- FileReader closed ----\n") ;
        }
       catch (Exception ioc) {;}
   }
  }  

}