Java swing实现支持录音等功能的钢琴程序

/* * @(#)MidiSynth.java 1.15 99/12/03 * * Copyright (c) 1999 Sun Microsystems, Inc. All Rights Reserved. * * Sun grants you ("Licensee") a non-exclusive, royalty free, license to use, * modify and redistribute this software in source and binary code form, * provided that i) this copyright notice and license appear on all copies of * the software; and ii) Licensee does not utilize the software in a manner * which is disparaging to Sun. * * This software is provided "AS IS," without a warranty of any kind. ALL * EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES, INCLUDING ANY * IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR * NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN AND ITS LICENSORS SHALL NOT BE * LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING * OR DISTRIBUTING THE SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN OR ITS * LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR FOR DIRECT, * INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER * CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY, ARISING OUT OF THE USE OF * OR INABILITY TO USE SOFTWARE, EVEN IF SUN HAS BEEN ADVISED OF THE * POSSIBILITY OF SUCH DAMAGES. * * This software is not designed or intended for use in on-line control of * aircraft, air traffic, aircraft navigation or aircraft communications; or in * the design, construction, operation or maintenance of any nuclear * facility. Licensee represents and warrants that it will not use or * redistribute the Software for such purposes. */import java.awt.*;import java.awt.event.*;import javax.swing.*;import javax.swing.border.*;import javax.swing.table.*;import javax.swing.event.*;import javax.sound.midi.*;import java.util.Vector;import java.io.File;import java.io.IOException;/** * Illustrates general MIDI melody instruments and MIDI controllers. * * @version @(#)MidiSynth.java 1.15 99/12/03 * @author Brian Lichtenwalter  */public class MidiSynth extends JPanel implements ControlContext {  final int PROGRAM = 192;  final int NOTEON = 144;  final int NOTEOFF = 128;  final int SUSTAIN = 64;  final int REVERB = 91;  final int ON = 0, OFF = 1;  final Color jfcBlue = new Color(204, 204, 255);  final Color pink = new Color(255, 175, 175);  Sequencer sequencer;  Sequence sequence;  Synthesizer synthesizer;  Instrument instruments[];  ChannelData channels[];  ChannelData cc;  // current channel  JCheckBox mouseOverCB = new JCheckBox("mouseOver", true);  JSlider veloS, presS, bendS, revbS;  JCheckBox soloCB, monoCB, muteCB, sustCB;   Vector keys = new Vector();  Vector whiteKeys = new Vector();  JTable table;  Piano piano;  boolean record;  Track track;  long startTime;  RecordFrame recordFrame;  Controls controls;  public MidiSynth() {    setLayout(new BorderLayout());    JPanel p = new JPanel();    p.setLayout(new BoxLayout(p, BoxLayout.Y_AXIS));    EmptyBorder eb = new EmptyBorder(5,5,5,5);    BevelBorder bb = new BevelBorder(BevelBorder.LOWERED);    CompoundBorder cb = new CompoundBorder(eb,bb);    p.setBorder(new CompoundBorder(cb,eb));    JPanel pp = new JPanel(new BorderLayout());    pp.setBorder(new EmptyBorder(10,20,10,5));    pp.add(piano = new Piano());    p.add(pp);    p.add(controls = new Controls());    p.add(new InstrumentsTable());    add(p);  }  public void open() {    try {      if (synthesizer == null) {        if ((synthesizer = MidiSystem.getSynthesizer()) == null) {          System.out.println("getSynthesizer() failed!");          return;        }      }       synthesizer.open();      sequencer = MidiSystem.getSequencer();      sequence = new Sequence(Sequence.PPQ, 10);    } catch (Exception ex) { ex.printStackTrace(); return; }    Soundbank sb = synthesizer.getDefaultSoundbank(); if (sb != null) {      instruments = synthesizer.getDefaultSoundbank().getInstruments();      synthesizer.loadInstrument(instruments[0]);    }    MidiChannel midiChannels[] = synthesizer.getChannels();    channels = new ChannelData[midiChannels.length];    for (int i = 0; i < channels.length; i++) {      channels[i] = new ChannelData(midiChannels[i], i);    }    cc = channels[0];    ListSelectionModel lsm = table.getSelectionModel();    lsm.setSelectionInterval(0,0);    lsm = table.getColumnModel().getSelectionModel();    lsm.setSelectionInterval(0,0);  }  public void close() {    if (synthesizer != null) {      synthesizer.close();    }    if (sequencer != null) {      sequencer.close();    }    sequencer = null;    synthesizer = null;    instruments = null;    channels = null;    if (recordFrame != null) {      recordFrame.dispose();      recordFrame = null;    }  }  /**   * given 120 bpm:   *  (120 bpm) / (60 seconds per minute) = 2 beats per second   *  2 / 1000 beats per millisecond   *  (2 * resolution) ticks per second   *  (2 * resolution)/1000 ticks per millisecond, or    *   (resolution / 500) ticks per millisecond   *  ticks = milliseconds * resolution / 500   */  public void createShortEvent(int type, int num) {    ShortMessage message = new ShortMessage();    try {      long millis = System.currentTimeMillis() - startTime;      long tick = millis * sequence.getResolution() / 500;      message.setMessage(type+cc.num, num, cc.velocity);       MidiEvent event = new MidiEvent(message, tick);      track.add(event);    } catch (Exception ex) { ex.printStackTrace(); }  }  /**   * Black and white keys or notes on the piano.   */  class Key extends Rectangle {    int noteState = OFF;    int kNum;    public Key(int x, int y, int width, int height, int num) {      super(x, y, width, height);      kNum = num;    }    public boolean isNoteOn() {      return noteState == ON;    }    public void on() {      setNoteState(ON);      cc.channel.noteOn(kNum, cc.velocity);      if (record) {        createShortEvent(NOTEON, kNum);      }    }    public void off() {      setNoteState(OFF);      cc.channel.noteOff(kNum, cc.velocity);      if (record) {        createShortEvent(NOTEOFF, kNum);      }    }    public void setNoteState(int state) {      noteState = state;    }  } // End class Key  /**   * Piano renders black & white keys and plays the notes for a MIDI    * channel.    */  class Piano extends JPanel implements MouseListener {    Vector blackKeys = new Vector();    Key prevKey;    final int kw = 16, kh = 80;    public Piano() {      setLayout(new BorderLayout());      setPreferredSize(new Dimension(42*kw, kh+1));      int transpose = 24;       int whiteIDs[] = { 0, 2, 4, 5, 7, 9, 11 };            for (int i = 0, x = 0; i < 6; i++) {        for (int j = 0; j < 7; j++, x += kw) {          int keyNum = i * 12 + whiteIDs[j] + transpose;          whiteKeys.add(new Key(x, 0, kw, kh, keyNum));        }      }      for (int i = 0, x = 0; i < 6; i++, x += kw) {        int keyNum = i * 12 + transpose;        blackKeys.add(new Key((x += kw)-4, 0, kw/2, kh/2, keyNum+1));        blackKeys.add(new Key((x += kw)-4, 0, kw/2, kh/2, keyNum+3));        x += kw;        blackKeys.add(new Key((x += kw)-4, 0, kw/2, kh/2, keyNum+6));        blackKeys.add(new Key((x += kw)-4, 0, kw/2, kh/2, keyNum+8));        blackKeys.add(new Key((x += kw)-4, 0, kw/2, kh/2, keyNum+10));      }      keys.addAll(blackKeys);      keys.addAll(whiteKeys);      addMouseMotionListener(new MouseMotionAdapter() {        public void mouseMoved(MouseEvent e) {          if (mouseOverCB.isSelected()) {            Key key = getKey(e.getPoint());            if (prevKey != null && prevKey != key) {              prevKey.off();            }             if (key != null && prevKey != key) {              key.on();            }            prevKey = key;            repaint();          }        }      });      addMouseListener(this);    }    public void mousePressed(MouseEvent e) {       prevKey = getKey(e.getPoint());      if (prevKey != null) {        prevKey.on();        repaint();      }    }    public void mouseReleased(MouseEvent e) {       if (prevKey != null) {        prevKey.off();        repaint();      }    }    public void mouseExited(MouseEvent e) {       if (prevKey != null) {        prevKey.off();        repaint();        prevKey = null;      }    }    public void mouseClicked(MouseEvent e) { }    public void mouseEntered(MouseEvent e) { }    public Key getKey(Point point) {      for (int i = 0; i < keys.size(); i++) {        if (((Key) keys.get(i)).contains(point)) {          return (Key) keys.get(i);        }      }      return null;    }    public void paint(Graphics g) {      Graphics2D g2 = (Graphics2D) g;      Dimension d = getSize();      g2.setBackground(getBackground());      g2.clearRect(0, 0, d.width, d.height);      g2.setColor(Color.white);      g2.fillRect(0, 0, 42*kw, kh);      for (int i = 0; i < whiteKeys.size(); i++) {        Key key = (Key) whiteKeys.get(i);        if (key.isNoteOn()) {          g2.setColor(record ? pink : jfcBlue);          g2.fill(key);        }        g2.setColor(Color.black);        g2.draw(key);      }      for (int i = 0; i < blackKeys.size(); i++) {        Key key = (Key) blackKeys.get(i);        if (key.isNoteOn()) {          g2.setColor(record ? pink : jfcBlue);          g2.fill(key);          g2.setColor(Color.black);          g2.draw(key);        } else {          g2.setColor(Color.black);          g2.fill(key);        }      }    }  } // End class Piano  /**   * Stores MidiChannel information.   */  class ChannelData {    MidiChannel channel;    boolean solo, mono, mute, sustain;    int velocity, pressure, bend, reverb;    int row, col, num;     public ChannelData(MidiChannel channel, int num) {      this.channel = channel;      this.num = num;      velocity = pressure = bend = reverb = 64;    }    public void setComponentStates() {      table.setRowSelectionInterval(row, row);      table.setColumnSelectionInterval(col, col);      soloCB.setSelected(solo);      monoCB.setSelected(mono);      muteCB.setSelected(mute);      //sustCB.setSelected(sustain);      JSlider slider[] = { veloS, presS, bendS, revbS };      int v[] = { velocity, pressure, bend, reverb };      for (int i = 0; i < slider.length; i++) {        TitledBorder tb = (TitledBorder) slider[i].getBorder();        String s = tb.getTitle();        tb.setTitle(s.substring(0, s.indexOf('=')+1)+s.valueOf(v[i]));        slider[i].repaint();      }    }  } // End class ChannelData  /**   * Table for 128 general MIDI melody instuments.   */  class InstrumentsTable extends JPanel {    private String names[] = {       "Piano", "Chromatic Perc.", "Organ", "Guitar",       "Bass", "Strings", "Ensemble", "Brass",       "Reed", "Pipe", "Synth Lead", "Synth Pad",      "Synth Effects", "Ethnic", "Percussive", "Sound Effects" };    private int nRows = 8;    private int nCols = names.length; // just show 128 instruments    public InstrumentsTable() {      setLayout(new BorderLayout());      TableModel dataModel = new AbstractTableModel() {        public int getColumnCount() { return nCols; }        public int getRowCount() { return nRows;}        public Object getValueAt(int r, int c) {           if (instruments != null) {            return instruments[c*nRows+r].getName();          } else {            return Integer.toString(c*nRows+r);          }        }        public String getColumnName(int c) {           return names[c];        }        public Class getColumnClass(int c) {          return getValueAt(0, c).getClass();        }        public boolean isCellEditable(int r, int c) {return false;}        public void setValueAt(Object obj, int r, int c) {}      };        table = new JTable(dataModel);      table.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);      // Listener for row changes      ListSelectionModel lsm = table.getSelectionModel();      lsm.addListSelectionListener(new ListSelectionListener() {        public void valueChanged(ListSelectionEvent e) {          ListSelectionModel sm = (ListSelectionModel) e.getSource();          if (!sm.isSelectionEmpty()) {            cc.row = sm.getMinSelectionIndex();          }          programChange(cc.col*nRows+cc.row);        }      });      // Listener for column changes      lsm = table.getColumnModel().getSelectionModel();      lsm.addListSelectionListener(new ListSelectionListener() {        public void valueChanged(ListSelectionEvent e) {          ListSelectionModel sm = (ListSelectionModel) e.getSource();          if (!sm.isSelectionEmpty()) {            cc.col = sm.getMinSelectionIndex();          }          programChange(cc.col*nRows+cc.row);        }      });      table.setPreferredScrollableViewportSize(new Dimension(nCols*110, 200));      table.setCellSelectionEnabled(true);      table.setColumnSelectionAllowed(true);      for (int i = 0; i < names.length; i++) {        TableColumn column = table.getColumn(names[i]);        column.setPreferredWidth(110);      }      table.setAutoResizeMode(table.AUTO_RESIZE_OFF);          JScrollPane sp = new JScrollPane(table);      sp.setVerticalScrollBarPolicy(sp.VERTICAL_SCROLLBAR_NEVER);      sp.setHorizontalScrollBarPolicy(sp.HORIZONTAL_SCROLLBAR_ALWAYS);      add(sp);    }    public Dimension getPreferredSize() {      return new Dimension(800,170);    }    public Dimension getMaximumSize() {      return new Dimension(800,170);    }    private void programChange(int program) {      if (instruments != null) {        synthesizer.loadInstrument(instruments[program]);      }      cc.channel.programChange(program);      if (record) {        createShortEvent(PROGRAM, program);      }    }  }  /**   * A collection of MIDI controllers.   */  class Controls extends JPanel implements ActionListener, ChangeListener, ItemListener {    public JButton recordB;    JMenu menu;    int fileNum = 0;    public Controls() {      setLayout(new BoxLayout(this, BoxLayout.Y_AXIS));      setBorder(new EmptyBorder(5,10,5,10));      JPanel p = new JPanel();      p.setLayout(new BoxLayout(p, BoxLayout.X_AXIS));      veloS = createSlider("Velocity", p);      presS = createSlider("Pressure", p);      revbS = createSlider("Reverb", p);  // create a slider with a 14-bit range of values for pitch-bend      bendS = create14BitSlider("Bend", p);      p.add(Box.createHorizontalStrut(10));      add(p);      p = new JPanel();      p.setBorder(new EmptyBorder(10,0,10,0));      p.setLayout(new BoxLayout(p, BoxLayout.X_AXIS));      JComboBox combo = new JComboBox();      combo.setPreferredSize(new Dimension(120,25));      combo.setMaximumSize(new Dimension(120,25));      for (int i = 1; i <= 16; i++) {        combo.addItem("Channel " + String.valueOf(i));      }       combo.addItemListener(this);      p.add(combo);      p.add(Box.createHorizontalStrut(20));      muteCB = createCheckBox("Mute", p);      soloCB = createCheckBox("Solo", p);      monoCB = createCheckBox("Mono", p);      //sustCB = createCheckBox("Sustain", p);      createButton("All Notes Off", p);      p.add(Box.createHorizontalStrut(10));      p.add(mouseOverCB);      p.add(Box.createHorizontalStrut(10));      recordB = createButton("Record...", p);      add(p);    }    public JButton createButton(String name, JPanel p) {      JButton b = new JButton(name);      b.addActionListener(this);      p.add(b);      return b;    }    private JCheckBox createCheckBox(String name, JPanel p) {      JCheckBox cb = new JCheckBox(name);      cb.addItemListener(this);      p.add(cb);      return cb;    }    private JSlider createSlider(String name, JPanel p) {      JSlider slider = new JSlider(JSlider.HORIZONTAL, 0, 127, 64);      slider.addChangeListener(this);      TitledBorder tb = new TitledBorder(new EtchedBorder());      tb.setTitle(name + " = 64");      slider.setBorder(tb);      p.add(slider);      p.add(Box.createHorizontalStrut(5));      return slider;    }    private JSlider create14BitSlider(String name, JPanel p) {      JSlider slider = new JSlider(JSlider.HORIZONTAL, 0, 16383, 8192);      slider.addChangeListener(this);      TitledBorder tb = new TitledBorder(new EtchedBorder());      tb.setTitle(name + " = 8192");      slider.setBorder(tb);      p.add(slider);      p.add(Box.createHorizontalStrut(5));      return slider;    }    public void stateChanged(ChangeEvent e) {      JSlider slider = (JSlider) e.getSource();      int value = slider.getValue();      TitledBorder tb = (TitledBorder) slider.getBorder();      String s = tb.getTitle();      tb.setTitle(s.substring(0, s.indexOf('=')+1) + s.valueOf(value));      if (s.startsWith("Velocity")) {        cc.velocity = value;      } else if (s.startsWith("Pressure")) {        cc.channel.setChannelPressure(cc.pressure = value);      } else if (s.startsWith("Bend")) {        cc.channel.setPitchBend(cc.bend = value);      } else if (s.startsWith("Reverb")) {        cc.channel.controlChange(REVERB, cc.reverb = value);      }      slider.repaint();    }    public void itemStateChanged(ItemEvent e) {      if (e.getSource() instanceof JComboBox) {        JComboBox combo = (JComboBox) e.getSource();        cc = channels[combo.getSelectedIndex()];        cc.setComponentStates();      } else {        JCheckBox cb = (JCheckBox) e.getSource();        String name = cb.getText();        if (name.startsWith("Mute")) {          cc.channel.setMute(cc.mute = cb.isSelected());        } else if (name.startsWith("Solo")) {          cc.channel.setSolo(cc.solo = cb.isSelected());        } else if (name.startsWith("Mono")) {          cc.channel.setMono(cc.mono = cb.isSelected());        } else if (name.startsWith("Sustain")) {          cc.sustain = cb.isSelected();          cc.channel.controlChange(SUSTAIN, cc.sustain ? 127 : 0);        }      }    }    public void actionPerformed(ActionEvent e) {      JButton button = (JButton) e.getSource();      if (button.getText().startsWith("All")) {        for (int i = 0; i < channels.length; i++) {          channels[i].channel.allNotesOff();        }        for (int i = 0; i < keys.size(); i++) {          ((Key) keys.get(i)).setNoteState(OFF);        }      } else if (button.getText().startsWith("Record")) {        if (recordFrame != null) {          recordFrame.toFront();        } else {          recordFrame = new RecordFrame();        }      }    }  } // End class Controls  /**   * A frame that allows for midi capture & saving the captured data.   */  class RecordFrame extends JFrame implements ActionListener, MetaEventListener {    public JButton recordB, playB, saveB;    Vector tracks = new Vector();    DefaultListModel listModel = new DefaultListModel();    TableModel dataModel;    JTable table;    public RecordFrame() {      super("Midi Capture");      addWindowListener(new WindowAdapter() {        public void windowClosing(WindowEvent e) {recordFrame = null;}      });      sequencer.addMetaEventListener(this);      try {        sequence = new Sequence(Sequence.PPQ, 10);      } catch (Exception ex) { ex.printStackTrace(); }      JPanel p1 = new JPanel(new BorderLayout());      JPanel p2 = new JPanel();      p2.setBorder(new EmptyBorder(5,5,5,5));      p2.setLayout(new BoxLayout(p2, BoxLayout.X_AXIS));      recordB = createButton("Record", p2, true);      playB = createButton("Play", p2, false);      saveB = createButton("Save...", p2, false);      getContentPane().add("North", p2);      final String[] names = { "Channel #", "Instrument" };        dataModel = new AbstractTableModel() {        public int getColumnCount() { return names.length; }        public int getRowCount() { return tracks.size();}        public Object getValueAt(int row, int col) {           if (col == 0) {            return ((TrackData) tracks.get(row)).chanNum;          } else if (col == 1) {            return ((TrackData) tracks.get(row)).name;          }           return null;        }        public String getColumnName(int col) {return names[col]; }        public Class getColumnClass(int c) {          return getValueAt(0, c).getClass();        }        public boolean isCellEditable(int row, int col) {          return false;        }        public void setValueAt(Object val, int row, int col) {           if (col == 0) {            ((TrackData) tracks.get(row)).chanNum = (Integer) val;          } else if (col == 1) {            ((TrackData) tracks.get(row)).name = (String) val;          }         }      };        table = new JTable(dataModel);      TableColumn col = table.getColumn("Channel #");      col.setMaxWidth(65);      table.sizeColumnsToFit(0);          JScrollPane scrollPane = new JScrollPane(table);      EmptyBorder eb = new EmptyBorder(0,5,5,5);      scrollPane.setBorder(new CompoundBorder(eb,new EtchedBorder()));   getContentPane().add("Center", scrollPane);   pack();      Dimension d = Toolkit.getDefaultToolkit().getScreenSize();      int w = 210;      int h = 160;      setLocation(d.width/2 - w/2, d.height/2 - h/2);      setSize(w, h);   setVisible(true);    }    public JButton createButton(String name, JPanel p, boolean state) {      JButton b = new JButton(name);      b.setFont(new Font("serif", Font.PLAIN, 10));      b.setEnabled(state);      b.addActionListener(this);      p.add(b);      return b;    }    public void actionPerformed(ActionEvent e) {      JButton button = (JButton) e.getSource();      if (button.equals(recordB)) {        record = recordB.getText().startsWith("Record");        if (record) {          track = sequence.createTrack();          startTime = System.currentTimeMillis();          // add a program change right at the beginning of           // the track for the current instrument          createShortEvent(PROGRAM,cc.col*8+cc.row);          recordB.setText("Stop");          playB.setEnabled(false);          saveB.setEnabled(false);        } else {          String name = null;          if (instruments != null) {            name = instruments[cc.col*8+cc.row].getName();          } else {            name = Integer.toString(cc.col*8+cc.row);          }          tracks.add(new TrackData(cc.num+1, name, track));           table.tableChanged(new TableModelEvent(dataModel));          recordB.setText("Record");          playB.setEnabled(true);          saveB.setEnabled(true);        }       } else if (button.equals(playB)) {        if (playB.getText().startsWith("Play")) {          try {            sequencer.open();            sequencer.setSequence(sequence);          } catch (Exception ex) { ex.printStackTrace(); }          sequencer.start();          playB.setText("Stop");          recordB.setEnabled(false);        } else {          sequencer.stop();          playB.setText("Play");          recordB.setEnabled(true);        }       } else if (button.equals(saveB)) {        try {          File file = new File(System.getProperty("user.dir"));          JFileChooser fc = new JFileChooser(file);          fc.setFileFilter(new javax.swing.filechooser.FileFilter() {            public boolean accept(File f) {              if (f.isDirectory()) {                return true;              }              return false;            }            public String getDescription() {              return "Save as .mid file.";            }          });          if (fc.showSaveDialog(null) == JFileChooser.APPROVE_OPTION) {            saveMidiFile(fc.getSelectedFile());          }        } catch (SecurityException ex) {           JavaSound.showInfoDialog();          ex.printStackTrace();        } catch (Exception ex) {           ex.printStackTrace();        }      }    }    public void meta(MetaMessage message) {      if (message.getType() == 47) { // 47 is end of track        playB.setText("Play");        recordB.setEnabled(true);      }    }    public void saveMidiFile(File file) {      try {        int[] fileTypes = MidiSystem.getMidiFileTypes(sequence);        if (fileTypes.length == 0) {          System.out.println("Can't save sequence");        } else {          if (MidiSystem.write(sequence, fileTypes[0], file) == -1) {            throw new IOException("Problems writing to file");          }         }      } catch (SecurityException ex) {         JavaSound.showInfoDialog();      } catch (Exception ex) {         ex.printStackTrace();       }    }    class TrackData extends Object {      Integer chanNum; String name; Track track;      public TrackData(int chanNum, String name, Track track) {        this.chanNum = new Integer(chanNum);        this.name = name;        this.track = track;      }    } // End class TrackData  } // End class RecordFrame  public static void main(String args[]) {    final MidiSynth midiSynth = new MidiSynth();    midiSynth.open();    JFrame f = new JFrame("Midi Synthesizer");    f.addWindowListener(new WindowAdapter() {      public void windowClosing(WindowEvent e) {System.exit(0);}    });    f.getContentPane().add("Center", midiSynth);    f.pack();    Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();    int w = 760;    int h = 470;    f.setLocation(screenSize.width/2 - w/2, screenSize.height/2 - h/2);    f.setSize(w, h);    f.setVisible(true);  }}