How do I flash the window taskbar in Swing?

package org.kodejava.example.swing;

import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

public class WindowTaskbarFlash extends JFrame {
    private WindowTaskbarFlash() throws HeadlessException {
        initUI();
    }

    private void initUI() {
        setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
        pack();
        setSize(200, 200);
        setState(Frame.ICONIFIED);

        // Demonstrate flashes the application window task bar
        // by calling the toFront method every 5 seconds.
        Timer timer = new Timer(5000, new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                toFront();
            }
        });
        timer.start();
    }

    public static void main(String[] args) {
        SwingUtilities.invokeLater(new Runnable() {
            @Override
            public void run() {
                new WindowTaskbarFlash().setVisible(true);
            }
        });
    }
}

How do I calculate process execution time in higher resolution?

This example demonstrates how to use the System.nanoTime() method to calculate processing execution time in higher resolution. The processing time calculated in nanoseconds resolution.

package org.kodejava.example.lang;

public class NanoSecondsTimerResolution {
    public static void main(String[] args) {
        // Get process execution start time in nanoseconds.
        long start = System.nanoTime();
        System.out.println("Process start... " + start);

        try {
            Thread.sleep(5000); // Simulate a long process.
        } catch (InterruptedException e) {
            e.printStackTrace();
        }

        // Get process execution finish time in nanoseconds.
        long finish = System.nanoTime();
        System.out.println("Process finish... " + finish);

        // Calculate the process execution time.
        long execTime = finish - start;
        System.out.println("Processing time = " + execTime + "(ns)");
    }
}