public JFileImageChooser(final Shell parent,final int style,final File workingDir){
  fileDialog=new FileDialog(parent,style);
  if (workingDir != null)   fileDialog.setFilterPath(workingDir.getAbsolutePath());
}

public JFileImageChooser ( final Shell parent , final int style , final File workingDir ) { fileDialog = new FileDialog ( parent , style ) ; if ( workingDir != null ) fileDialog . setFilterPath ( workingDir . getAbsolutePath ( ) ) ; }
create a new image file chooser
