如何在java swing中通过另一个gui应用程序刷新gui屏幕？

Question

我正在尝试从一个外部gui应用程序更新时间组件值，该应用程序链接到同一个包中的主gui。任何人都可以帮助更新或刷新gui屏幕与我修改的时间值存储在文件中。？

**SCHEDULER class:** // responsible for retrieving the time value from stored file and display in the main gui. 

public static void runTask1(Task_Scheduler tes)
{


         if(tes.isActived() >= 1)
        {


            .... (some operations)

            System.out.println("Start time : " + tes.getStartTime());

            worker.executeAtAndRepeat(tes.getStartTime().getTime()); // another class method
        } else
        {
            .....
        }
    } 

**GUI class:** // application that i have to update time.

/* GUI components declaration */
public void update_time()
{
...........
...........
}

public void actionPerformed(ActionEvent e) {

    if(e.getSource()==Ok_button){
        try {
            update_time(); // This method updates my time.
            JOptionPane.showMessageDialog(null, "Updated Successfully !");

            .....

        } catch (Exception e1) {

            e1.printStackTrace();
        }
        scheduler.runTask1(tes);

    }    
}       

**Task_Scheduler class:** // for passing time value as argument in scheduler class.

...
public Timestamp getStartTime()
{
    return startTime;
}
...

以下是我过去一周试图查询同一问题的内容。请参阅此链接，以便有一个共同的想法。 my previous question