JFace进度条

 someButton.addSelectionListener( new  SelectionAdapter() {
                 public   void  widgetSelected(SelectionEvent e) {
                     IRunnableWithProgress runnable = new  IRunnableWithProgress () {
                         final   byte [][] result =  new   byte [ 1 ][];
                         //实现接口中的execute方法：
                         protected   void  execute(IProgressMonitor monitor)  throws  CoreException {
                            //具体的业务逻辑：

                         }


                        //实现接口中的run方法，该方法是一个同步方法：
                        public   synchronized   final   void  run(IProgressMonitor monitor)
                          throws  InvocationTargetException, InterruptedException {
                            try  {
                                //总的工作量
                                int  totalWork = IProgressMonitor.UNKNOWN;
                                monitor.beginTask("A Progress monitor dialog example..." ,  1000 );
                                if  (result[ 0 ] ==  null ){
                                    totalWork = 400 ;
                                }
                                monitor.worked(totalWork);

                                //执行业务逻辑：
                                execute(monitor);
                                if  (result[ 0 ] !=  null ) {
                                    totalWork = 1000 ;
                                }else  {
                                    totalWork = 700 ;
                                }
                                monitor.worked(totalWork);

                            } catch  (CoreException e) {
                                throw   new  InvocationTargetException(e);
                            } catch  (OperationCanceledException e) {
                                throw   new  InterruptedException(e.getMessage());
                            }finally  {
                                monitor.done();
                            }
                        }
                     };
                     try  {
                         new  ProgressMonitorDialog(PlatformUI.getWorkbench().getDisplay().getActiveShell()).run( true ,  true , runnable);
                     } catch  (InvocationTargetException e1) {
                         // TODO Auto-generated catch block
                         e1.printStackTrace();
                     } catch  (InterruptedException e1) {
                         // TODO Auto-generated catch block
                         e1.printStackTrace();
                     }
                 }
             });