//鼠标设置为等待状态

Display.getCurrent().getActiveShell().setCursor(new Cursor(null, SWT.CURSOR_WAIT)); 

//鼠标设置为正常状态

Display.getCurrent().getActiveShell().setCursor(new Cursor(null, SWT.CURSOR_ARROW)); 

如何在SWT中使鼠标的状态变成忙碌

文章来自于这里
http://gogoyoyo.iteye.com/blog/265130

public class DoubleClickTreeNodeAction extends Action {   

    /*  
     * (non-Javadoc)  
     *   
     * @see org.eclipse.jface.action.Action#run()  
     */  
    public void run() {   
        // get Display from your own plug-in   
        BusyIndicator.showWhile(Activator.getDefault().getWorkbench()   
                .getDisplay(), new Runnable() {   
            public void run() {   
                performAction();   //这里是原来run的内容
            }   
        });   
    }   

    private void performAction() {   
        // connecting to database...   
    }   

}   

关于修改标题的代码
//rcptitle是自己定义的

changeAppTitle(ApplicationWorkbenchWindowAdvisor.RcpTitle+" - 代码正在运行...");

changeAppTitle(ApplicationWorkbenchWindowAdvisor.RcpTitle);

  public static void changeAppTitle(String newTitle) {
      Display display = Display.getDefault();
      if (display != null) {
          // Look at all the shells and pick the first one
          // that is a workbench window.
          Shell shells[] = display.getShells();
          for (int i = 0; i < shells.length; i++) {
              Object obj = shells[i].getData();
              // Check whether this shell points to the
              // Application main window's shell
              if (obj instanceof IWorkbenchWindow) {
                  shells[i].setText(newTitle);
                  break;
              }
          }
      }
}