// File: FileTest.java (Fig. 15.16 in JHTP2)
// Demonstrating the File class.

import java.awt.*;
import java.awt.event.*;
import java.io.*;
import com.deitel.jhtp2.ch11.CloseWindowAndExit;

public class FileTest extends Frame implements ActionListener {

   private TextField enter;
   private TextArea output;

   public FileTest()
   {
      super( "Testing class File" );
      enter = new TextField(
         "Enter file or directory name here" );
      enter.addActionListener( this );
      output = new TextArea();
      add( enter, BorderLayout.NORTH );
      add( output, BorderLayout.CENTER );
      setSize( 400, 400 );
      setVisible( true );
   }

   public void actionPerformed( ActionEvent e )
   {
      File name = new File( e.getActionCommand() );

      if ( name.exists() ) {
         output.setText(
            name.getName() + " exists\n" +
            ( name.isFile() ? "is a file\n" :
                              "is not a file\n" ) +
            ( name.isDirectory() ? "is a directory\n" :
                                   "is not a directory\n" ) +
            ( name.isAbsolute() ? "is absolute path\n" :
                                  "is not absolute path\n" ) +
            "Last modified: " + name.lastModified() +
            "\nLength: " + name.length() +
            "\nPath: " + name.getPath() +
            "\nAbsolute path: " + name.getAbsolutePath() +
            "\nParent: " + name.getParent() );

         if ( name.isFile() ) {
            try {
               RandomAccessFile r =
                  new RandomAccessFile( name, "r" );
               StringBuffer buf = new StringBuffer();
               String text;

               output.append( "\n\n" );

               while( ( text = r.readLine() ) != null ) 
                  buf.append( text + "\n" );

               output.append( buf.toString() );
            }
            catch( IOException e2 ) {
            }
         }
         else if ( name.isDirectory() ) {
            String directory[] = name.list();

            output.append( "\n\nDirectory contents:\n");

            for ( int i = 0; i < directory.length; i++ )
               output.append( directory[ i ] + "\n" );
         }
      }
      else {
         output.setText( e.getActionCommand() +
                         " does not exist\n" );
      }       
   }

   public static void main( String args[] )
   {
      FileTest f = new FileTest();
      f.addWindowListener( new CloseWindowAndExit() );
   }
}