javalab11

import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.URL;
import java.util.Locale;

public class DownloadExample {

    static int count = 0;

    // lista plików do pobrania
    static String [] toDownload = {
            "http://home.agh.edu.pl/pszwed/wyklad-c/01-jezyk-c-intro.pdf",
            "http://home.agh.edu.pl/~pszwed/wyklad-c/02-jezyk-c-podstawy-skladni.pdf",
            "http://home.agh.edu.pl/~pszwed/wyklad-c/03-jezyk-c-instrukcje.pdf",
            "http://home.agh.edu.pl/~pszwed/wyklad-c/04-jezyk-c-funkcje.pdf",
            "http://home.agh.edu.pl/~pszwed/wyklad-c/05-jezyk-c-deklaracje-typy.pdf",
            "http://home.agh.edu.pl/~pszwed/wyklad-c/06-jezyk-c-wskazniki.pdf",
            "http://home.agh.edu.pl/~pszwed/wyklad-c/07-jezyk-c-operatory.pdf",
            "http://home.agh.edu.pl/~pszwed/wyklad-c/08-jezyk-c-lancuchy-znakow.pdf",
            "http://home.agh.edu.pl/~pszwed/wyklad-c/09-jezyk-c-struktura-programow.pdf",
            "http://home.agh.edu.pl/~pszwed/wyklad-c/10-jezyk-c-dynamiczna-alokacja-pamieci.pdf",
            "http://home.agh.edu.pl/~pszwed/wyklad-c/11-jezyk-c-biblioteka-we-wy.pdf",
            "http://home.agh.edu.pl/~pszwed/wyklad-c/preprocesor-make-funkcje-biblioteczne.pdf",
    };

    static class Downloader implements Runnable{
        private final String url;

        Downloader(String url){
            this.url = url;
        }

        public void run(){
            String [] divided = url.split("/");
            String fileName = divided[divided.length - 1];

            try(InputStream in = new URL(url).openStream(); FileOutputStream out = new FileOutputStream(fileName) ){
                for(;;){
                    // czytaj znak z in
                    // jeśli <0 break
                    int sign = in.read();
                    if (sign < 0) break;

                    //zapisz znak do out
                    out.write((char)sign);
                }
                count++;
            } catch (FileNotFoundException e) {
                e.printStackTrace();
            } catch (IOException e) {
                e.printStackTrace();
            }
            System.out.println("Done:"+fileName);
        }

    }

    static void sequentialDownload(){
        double t1 = System.nanoTime()/1e6;
        for(String url:toDownload){
            new Downloader(url).run();
        }
        double t2 = System.nanoTime()/1e6;
        System.out.printf(Locale.US,"t2-t1=%f\n",t2-t1);
    }

    static void concurrentDownload(){
        double t1 = System.nanoTime()/1e6;
        for(String url:toDownload){
            // uruchom Downloader jako wątek...
            Runnable runnable = new Downloader(url);
            Thread t = new Thread(runnable);
            t.start();
        }
        double t2 = System.nanoTime()/1e6;
        System.out.printf(Locale.US,"t2-t1=%f\n",t2-t1);
    }

static void concurrentDownload2(){
        double t1 = System.nanoTime()/1e6;
        for(String url:toDownload){
            // uruchom Downloader jako wątek...
            Runnable runnable = new Downloader(url);
            Thread t = new Thread(runnable);
            t.start();
        }
        while(count!=toDownload.length){
            // wait...
            Thread.yield();
        }
        double t2 = System.nanoTime()/1e6;
        System.out.printf(Locale.US,"t2-t1=%f\n",t2-t1);
    }


    public static void main(String[] args) {
        //sequentialDownload();
        concurrentDownload2();
    }
}











/////////////////////////////////////



import javax.swing.*;
import java.awt.geom.Point2D;
import java.time.LocalTime;
import java.awt.*;
import java.awt.geom.AffineTransform;

public class ClockWithGui extends JPanel {

    LocalTime time = LocalTime.now();

    ClockWithGui(){
        ClockWithGui.ClockThread clock = new ClockWithGui.ClockThread();
        clock.start();
    }

    class ClockThread extends Thread{

        @Override
        public void run() {
            for(;;){
                time = LocalTime.now();
                System.out.printf("%02d:%02d.%02d \n",time.getHour(),time.getMinute(),time.getSecond());

                try {
                    sleep(1000);
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
                repaint();
                setOpaque(false);
            }
        }
    }

    public void paintComponent(Graphics g){
        Graphics2D g2d=(Graphics2D)g;
        g2d.translate(getWidth()/2,getHeight()/2);

        for(int i=1;i<13;i++){
            AffineTransform at = new AffineTransform();
            at.rotate(2*Math.PI/12*i);
            Point2D src = new Point2D.Float(0,-120);
            Point2D trg = new Point2D.Float();
            at.transform(src,trg);
            g2d.drawString(Integer.toString(i),(int)trg.getX(),(int)trg.getY());
        }

        AffineTransform saveAT = g2d.getTransform();

        BasicStroke bs = new BasicStroke(2);

        // wskazowka sekundowa
        g2d.rotate(time.getSecond()%60*2*Math.PI/60);
        g2d.setStroke(bs);
        g2d.setColor(new Color(255,0,0));
        g2d.drawLine(0,0,0,-100);
        g2d.setTransform(saveAT);

        g2d.setColor(new Color(0,0,0));

        // wskazowka minutowa
        g2d.rotate(time.getMinute()%60*2*Math.PI/60);
        bs = new BasicStroke(5);
        g2d.setStroke(bs);
        g2d.drawLine(0,0,0,-80);
        g2d.setTransform(saveAT);

        // wskazowka godzinowa
        g2d.rotate(time.getHour()%12*2*Math.PI/12);
        bs = new BasicStroke(8);
        g2d.setStroke(bs);
        g2d.drawLine(0,0,0,-50);
        g2d.setTransform(saveAT);


    }

    public static void main(String[] args) {

        new ClockWithGui();

        JFrame frame = new JFrame("Clock");
        frame.setContentPane(new ClockWithGui());
        frame.setSize(700, 700);
        frame.setLocationRelativeTo(null);
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setResizable(true);
        frame.setVisible(true);

    }
}









///////////////////////







import java.time.LocalTime;

public class Clock extends Thread{

    @Override
    public void run() {
        while (true) {
            LocalTime time = LocalTime.now();
            System.out.printf("%02d:%02d.%02d\n",
                    time.getHour(),
                    time.getMinute(),
                    time.getSecond());
            try {
                sleep(1000);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }
    }

    public static void main(String[] args) {
        new Clock().start();
    }
}