import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.InputEvent;
import java.awt.event.KeyEvent;
import java.io.File;

import javax.swing.JFileChooser;
import javax.swing.JFrame;
import javax.swing.JMenu;
import javax.swing.JMenuBar;
import javax.swing.JMenuItem;
import javax.swing.KeyStroke;
import javax.swing.filechooser.FileFilter;
    

public class gui extends JFrame implements ActionListener
{
  /**
	 * 
	 */
	private static final long serialVersionUID = 1L;
private View view = new View();
  public gui()
  {
   
    JMenuBar m = new JMenuBar();
    JMenu menu = new JMenu( "Datei" );
    JMenuItem item = new JMenuItem( "Öffnen" );
    item.setAccelerator(
        KeyStroke.getKeyStroke( KeyEvent.VK_O, InputEvent.CTRL_MASK ) );
    item.addActionListener( this );
    menu.add( item );
    JMenuItem item2 = new JMenuItem( "Speichern unter..." );
    menu.add(item2);
    m.add( menu );
    JMenu menu2 = new JMenu( "Effekte" );
    JMenuItem item3 = new JMenuItem( "Graustufen" );
    menu2.add(item3);
    JMenuItem item4 = new JMenuItem( "Sepia-Effekt" );
    menu2.add(item4);
    JMenuItem item5 = new JMenuItem( "Rauschen" );
    menu2.add(item5);
    JMenuItem item6 = new JMenuItem( "Übergangsbreite" );
    menu2.add(item6);
    m.add(menu2);
    JMenu menu3 = new JMenu( "?" );
    JMenuItem item7 = new JMenuItem( "Online-Hilfe" );
    menu3.add(item7);
    m.add(menu3);
    setJMenuBar( m );
    add( view );
    setDefaultCloseOperation( JFrame.EXIT_ON_CLOSE );
    setSize( 1200, 750 );
  }
  public void actionPerformed( ActionEvent e )
  {
    JFileChooser d = new JFileChooser();
    d.setFileFilter( new FileFilter()
    {
      
      public boolean accept( File f )
      {
        return f.isDirectory() || f.getName().toLowerCase().endsWith( ".bmp" );
      }
    
      public String getDescription()
      {
        return "*.bmp*";
      }
    } );
    d.showOpenDialog( null );
    File file = d.getSelectedFile();
    view.setImage( file );
  }}

import java.awt.*;
import java.awt.event.*;
import java.io.File;
import javax.swing.*;
import javax.swing.filechooser.FileFilter;








public class View extends JComponent
{
  /**
	 * 
	 */
	private static final long serialVersionUID = 1L;
private Image image;
  public void setImage( File file )
  {
    image = Toolkit.getDefaultToolkit().getImage( file.getAbsolutePath() );
    if ( image != null )
      repaint();
  }
  
  protected void paintComponent( Graphics g )
  {
    if ( image != null )
    	 g.drawImage( image, 600-image.getWidth(null)/2, 350-image.getHeight(null)/2, this );
    
  }


  public static void main( String[] args )
  {
    new gui().setVisible( true );
    
  }}