不幸的是，似乎这个最近关闭的问题没有得到很好的理解。这是典型的输出：

run:
    Trying to Remove JDialog
    Remove Cycle Done :-)
    Checking if still exists any of TopLayoutContainers
JFrame
JDialog
    Will Try Remove Dialog again, CycleNo. 1
 -----------------------------------------------------------
    Trying to Remove JDialog
    Remove Cycle Done :-)
    Checking if still exists any of TopLayoutContainers
JFrame
JDialog
    Will Try Remove Dialog again, CycleNo. 2
 -----------------------------------------------------------
    Trying to Remove JDialog
    Remove Cycle Done :-)
    Checking if still exists any of TopLayoutContainers
JFrame
JDialog
    Will Try Remove Dialog again, CycleNo. 3
 -----------------------------------------------------------
    Trying to Remove JDialog
    Remove Cycle Done :-)
    Checking if still exists any of TopLayoutContainers
JFrame
JDialog
*** End of Cycle Without Success, Exit App ***
BUILD SUCCESSFUL (total time: 13 seconds)

我再试一次问这个问题：我如何能K 我 L * L于运行第一开顶层Container，并与关闭对我摇摆恶梦帮助？

import java.awt.*;
import java.awt.event.WindowEvent;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.swing.*;

public class RemoveDialogOnRuntime extends JFrame {

    private static final long serialVersionUID = 1L;
    private int contID = 1;
    private boolean runProcess;
    private int top = 20;
    private int left = 20;
    private int maxLoop = 0;

    public RemoveDialogOnRuntime() {
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        setPreferredSize(new Dimension(300, 300));
        setTitle("Remove Dialog On Runtime");
        setLocation(150, 150);
        pack();
        setVisible(true);
        Point loc = this.getLocation();
        top += loc.x;
        left += loc.y;
        AddNewDialog();
    }

    private void AddNewDialog() {
        DialogRemove firstDialog = new DialogRemove();
        remWins();
    }

    private void remWins() {
        runProcess = true;
        Thread th = new Thread(new RemTask());
        th.setDaemon(false);
        th.setPriority(Thread.MIN_PRIORITY);
        th.start();
    }

    private class RemTask implements Runnable {

        @Override
        public void run() {
            while (runProcess) {
                Window[] wins = Window.getWindows();
                for (int i = 0; i < wins.length; i++) {
                    if (wins[i] instanceof JDialog) {
                        System.out.println("    Trying to Remove JDialog");
                        wins[i].setVisible(false);
                        wins[i].dispose();
                        WindowEvent windowClosing = new WindowEvent(wins[i], WindowEvent.WINDOW_CLOSING);
                        wins[i].dispatchEvent(windowClosing);
                        Toolkit.getDefaultToolkit().getSystemEventQueue().postEvent(windowClosing);
                        Runtime runtime = Runtime.getRuntime();
                        runtime.gc();
                        runtime.runFinalization();
                    }
                    try {
                        Thread.sleep(1000);
                    } catch (InterruptedException ex) {
                        Logger.getLogger(RemoveDialogOnRuntime.class.getName()).log(Level.SEVERE, null, ex);
                    }
                }
                wins = null;
                SwingUtilities.invokeLater(new Runnable() {

                    @Override
                    public void run() {
                        System.out.println("    Remove Cycle Done :-)");
                        Runtime.getRuntime().runFinalization();
                        Runtime.getRuntime().gc();
                        runProcess = false;
                    }
                });
            }
            pastRemWins();
        }
    }

    private void pastRemWins() {
        System.out.println("    Checking if still exists any of TopLayoutContainers");
        Window[] wins = Window.getWindows();
        for (int i = 0; i < wins.length; i++) {
            if (wins[i] instanceof JFrame) {
                System.out.println("JFrame");
                wins[i].setVisible(true);
            } else if (wins[i] instanceof JDialog) {
                System.out.println("JDialog");
                wins[i].setVisible(true);
            }
        }
        if (wins.length > 1) {
            wins = null;
            maxLoop++;
            if (maxLoop <= 3) {
                System.out.println("    Will Try Remove Dialog again, CycleNo. " + maxLoop);
                System.out.println(" -----------------------------------------------------------");
                remWins();
            } else {
                System.out.println(" -----------------------------------------------------------");
                System.out.println("*** End of Cycle Without Success, Exit App ***");
                closeMe();
            }
        }
    }

    private void closeMe() {
        EventQueue.invokeLater(new Runnable() {

            @Override
            public void run() {
                System.exit(0);
            }
        });
    }

    private class DialogRemove extends JDialog {

        private static final long serialVersionUID = 1L;

        DialogRemove(final Frame parent) {
            super(parent, "SecondDialog " + (contID++));
            setLocation(top, left);
            top += 20;
            left += 20;
            setPreferredSize(new Dimension(200, 200));
            setDefaultCloseOperation(JDialog.DISPOSE_ON_CLOSE);
            setModalityType(Dialog.ModalityType.MODELESS);
            pack();
            setVisible(true);
        }

        private DialogRemove() {
            setTitle("SecondDialog " + (contID++));
            setLocation(top, left);
            top += 20;
            left += 20;
            setPreferredSize(new Dimension(200, 200));
            setDefaultCloseOperation(JDialog.DISPOSE_ON_CLOSE);
            setModalityType(Dialog.ModalityType.MODELESS);
            pack();
            setVisible(true);
        }
    }

    public static void main(String args[]) {
        EventQueue.invokeLater(new Runnable() {

            @Override
            public void run() {
                RemoveDialogOnRuntime superConstructor = new RemoveDialogOnRuntime();
            }
        });
    }
}