164             }
 165 
 166             for (final int id : getDisplayIDs()) {
 167                 devices.put(id, old.containsKey(id) ? old.get(id)
 168                                                     : new CGraphicsDevice(id));
 169             }
 170         }
 171         displayChanged();
 172     }
 173 
 174     @Override
 175     public synchronized GraphicsDevice getDefaultScreenDevice() throws HeadlessException {
 176         final int mainDisplayID = getMainDisplayID();
 177         CGraphicsDevice d = devices.get(mainDisplayID);
 178         if (d == null) {
 179             // we do not expect that this may happen, the only response
 180             // is to re-initialize the list of devices
 181             initDevices();
 182 
 183             d = devices.get(mainDisplayID);



 184         }
 185         return d;
 186     }
 187 
 188     @Override
 189     public synchronized GraphicsDevice[] getScreenDevices() throws HeadlessException {
 190         return devices.values().toArray(new CGraphicsDevice[devices.values().size()]);
 191     }
 192 
 193     public synchronized GraphicsDevice getScreenDevice(int displayID) {
 194         return devices.get(displayID);
 195     }
 196 
 197     @Override
 198     protected synchronized int getNumScreens() {
 199         return devices.size();
 200     }
 201 
 202     @Override
 203     protected GraphicsDevice makeScreenDevice(int screennum) {

 164             }
 165 
 166             for (final int id : getDisplayIDs()) {
 167                 devices.put(id, old.containsKey(id) ? old.get(id)
 168                                                     : new CGraphicsDevice(id));
 169             }
 170         }
 171         displayChanged();
 172     }
 173 
 174     @Override
 175     public synchronized GraphicsDevice getDefaultScreenDevice() throws HeadlessException {
 176         final int mainDisplayID = getMainDisplayID();
 177         CGraphicsDevice d = devices.get(mainDisplayID);
 178         if (d == null) {
 179             // we do not expect that this may happen, the only response
 180             // is to re-initialize the list of devices
 181             initDevices();
 182 
 183             d = devices.get(mainDisplayID);
 184             if (d == null) {
 185                 throw new AWTError("no screen devices");
 186             }
 187         }
 188         return d;
 189     }
 190 
 191     @Override
 192     public synchronized GraphicsDevice[] getScreenDevices() throws HeadlessException {
 193         return devices.values().toArray(new CGraphicsDevice[devices.values().size()]);
 194     }
 195 
 196     public synchronized GraphicsDevice getScreenDevice(int displayID) {
 197         return devices.get(displayID);
 198     }
 199 
 200     @Override
 201     protected synchronized int getNumScreens() {
 202         return devices.size();
 203     }
 204 
 205     @Override
 206     protected GraphicsDevice makeScreenDevice(int screennum) {