Web design tools - 1240 Java Media Framework and Java Sound (on
1240 Java Media Framework and Java Sound (on CD) Chapter 22 42 container.add( buttonPanel, BorderLayout.NORTH ); 43 44 // opening file from directory button 45 JButton openFile = new JButton( “Open File” ); 46 buttonPanel.add( openFile ); 47 48 // register an ActionListener for openFile events 49 openFile.addActionListener( 50 51 // anonymous inner class to handle openFile events 52 new ActionListener() { 53 54 // open and create player for file 55 public void actionPerformed( ActionEvent event ) 56 { 57 mediaFile = getFile(); 58 59 if ( mediaFile != null ) { 60 61 // obtain URL from file 62 try { 63 fileURL = mediaFile.toURL(); 64 } 65 66 // file path unresolvable 67 catch ( MalformedURLException badURL ) { 68 badURL.printStackTrace(); 69 showErrorMessage( “Bad URL” ); 70 } 71 72 makePlayer( fileURL.toString() ); 73 74 } 75 76 } // end actionPerformed 77 78 } // end ActionListener 79 80 ); // end call to method addActionListener 81 82 // URL opening button 83 JButton openURL = new JButton( “Open Locator” ); 84 buttonPanel.add( openURL ); 85 86 // register an ActionListener for openURL events 87 openURL.addActionListener( 88 89 // anonymous inner class to handle openURL events 90 new ActionListener() { 91 92 // open and create player for media locator 93 public void actionPerformed( ActionEvent event ) 94 { Fig. 22.1 Playing media with interface Player(part 2 of 
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