从控制台获取输入后，不会出现Swing窗口

I have a simple swing window in order to load files.

我有一个简单的摆动窗口,以加载文件。

This appear in the class analyzedLoad, in a function analyzedloads()

这出现在被分析的类中,在函数analyzeloads()中出现

JFileChooser fc = new JFileChooser();
JFrame frame = new JFrame();
int returnVal = fc.showOpenDialog(frame);
frame.dispose();
if (returnVal == JFileChooser.APPROVE_OPTION) {

Where I apply the function without get an input from the user, all fine. But where I get an input from the user, in this way:

我在没有得到用户输入的情况下应用函数,一切都很好。但是我从这里获得了用户的输入,这样:

    int al= 0;
     Scanner in = new Scanner(System.in);
       System.out.println("for choose file, press 1; for save, press 2");
       al= in.nextInt();
       if (al== 1){
        analyzedLoad.analyzedloads(); // A static function which open the swing window

The window doesn't appear, and the process continue to run, without doing anything.

窗口没有出现,进程继续运行,没有做任何事情。

Thanks.

3 个解决方案

#1

Becaue "a scanning operation may block waiting for input," I suspect you're blocking the event dispatch thread. Instead use a File Chooser to obtain a file reference.

Becaue“扫描操作可能阻止等待输入,”我怀疑你是阻止了事件发送线程。而是使用文件选择器来获取文件引用。

#2

Try adding a second mywindow.setVisible(true) after the console operation.

尝试在控制台操作后添加第二个mywindow.setVisible(true)。

#3

You might want to try to declaring the analyzeLoad variable as final and do something like so:

您可能想尝试将analyzeLoad变量声明为final,并执行以下操作:

SwingUtilities.invokeLater(new Runnable()
{
    @Override
    public void run()
    {
         analyzedLoad.analyzedloads();
    }
}

or since the method is static:

或者因为该方法是静态的:

    SwingUtilities.invokeLater(new Runnable()
    {
        @Override
        public void run()
        {
             YourClass.analyzedloads();
        }
    }

That being said, without more code we can only speculate.

话虽这么说,没有更多的代码,我们只能推测。

#1