Приклад 5. Запуск повільної кількості потоків

Приклад 5. Запуск повільної кількості потоків

import javax. swing. *;

import java. awt. event. *;

import java. awt. *;

import com. bruceeckel. swing. *;

public class Counter4 extends JApplet {

private int size = 12;

private JButton

start = new JButton (“Почати”);

private boolean started = false;

private Ticker[] s;

private boolean isApplet = true;

class Ticker extends Thread {

private JButton

b = new JButton (“Переключити”);

private JTextField t = new JTextField(10);

private int count = 0;

private boolean runFlag = true;

public Ticker() {

b. addActionListener(new ToggleL());

JPanel p = new JPanel();

p. add(t);

p. add(b);

getContentPane(). add(p);

}

class ToggleL implements ActionListener {

public void actionPerformed(ActionEvent e) {

runFlag =! runFlag;

}

public void run() {

while (true) {

if(runFlag)

t. setText(Integer. toString(count++));

try {

sleep(100);

}

catch(InterruptedException e) {

System. err. println(“ Перервано”); }

}

class StartL implements ActionListener {

public void actionPerformed(ActionEvent e) {

if(! started) {

started = true;

for (int i = 0; i < s. length; i++)

s[i]. start();

}

public void init() {

Container cp = getContentPane();

cp. setLayout (new FlowLayout());

if (isApplet) {

String sz = getParameter(“size”);

if (sz! = null)

size = Integer. parseInt(sz);

}

s = new Ticker[size];

for (int i = 0; i < s. length; i++)

s[i] = new Ticker();

start. addActionLisener(new StartL());

cp. add(start);

}

public static void main(Sting[] args) {

Counter4 applet = new Counter4();

applet. isApplet = false;

if(args. length! = 0)

applet. size = Integer. parseInt(args[0]);

Console. run(applet, 200, applet. size*50 );

}

Приклад 6. Потоки –демони

import java. io. *;

class Daemon extends Thread {

private static final int SIZE = 10;

private Thread[] t = new Thread[SIZE];

public Daemon (true);

setDaemon(true);

start();

public void run() {

for (int i = 0; i < SIZE; i++)

t[i] = new DaemonSpawn(i);

for (int i = 0; i < SIZE; i++)

System. out. println(“t[” + i + “]. isDaemon() = “ +

t[i]. isDaemon());

while (true)

yield();

}

class DaemonSpawn extends Thread {

public DaemonSpawn (int i) {

System. out. println(“Потік DaemonSpawn “ + i + “

запущений”);

start();

}

public void run() {

while (true)

yield();

}

public class Daemons {

public static void main(Sting[] args) throws IOExctption {

Thread d = new Daemon();

System. out. println(“d. isDaemon() = “ + d. isDaemon());

System. out. println(“Натисні будь-яку клавишу “);

System. in. read();

}