Приклад 1.

import javax. swing. *;

import java. awt. event. *;

import java. awt. *;

import com. bruceeckel. swing. *;

public class Counter1 extends JApplet {

private int count = 0;

private JButton

start = new JButton (“Почати”),

on0ff = new JButton (“Переключити”);

private JTextField t = new JTextField(10);

private boolean runFlag = true;

public void init() {

Container cp = getContentPane();

cp. setLayout (new FlowLayout());

cp. add(t);

start. addActionLisener(new StartL());

cp. add(start);

on0ff. addActionLisener(new 0n0ffL());

cp. add(on0ff);

}

public void go() {

while (true) {

try {

Thread. sleep(100); }

catch(InterruptedException e) {

System. err. println(“Виконання перервано”);

}

if (runFlag)

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

}

class StartL implements ActionListener {

public void actionPerformed(ActionEvent e) {

go();

}

class 0n0ffL implements ActionListener {

public void actionPerformed(ActionEvent e) {

runFlag =! runFlag;

}

public static void main(Sting[] args) {

Console. run(new Counter1(), 300, 100);

}

Приклад 2. Простий приклад з використанням потоків.

public class SimpleThread extends Thread {

private int countdown = 5;

private static int threadCount = 0;

private int threadNumber = ++threadCount;

public SimpleThread() {

System. out. println(“Cтворення ” + threadNumber);

}

public void run() {

while (true) {

System. out. println(“Потік ” + threadNumber + “(“ + countdown + “)”);

if (--countDown == 0) return;

}

public static void main(Sting[] args) {

for (int i = 0; i< 5; i++)

new SimpleThread(). start();

System. out. println(“Усі потоки запущені ”);

}

Приклад 3. Чутливий користувацький інтерфейс з потоками

import javax. swing. *;

import java. awt. event. *;

import java. awt. *;

import com. bruceeckel. swing. *;

public class Counter2 extends JApplet {

private class SeparateSubTask extends Thread {

private int count = 0;

private boolean runFlag = true;

SeparateSubTask() { start(); }

void invertFlag() { runFlag =! runFlag; }

public void run() {

while (true) {

try {

sleep(100);

}

catch(InterruptedException e) {

System. err. println(“ Перервано”); }

if (runFlag)

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

}

private SeparateSubTask sp = null;

private JTextField t = new JTextField(10);

private JButton

start = new JButton (“Почати”),

on0ff = new JButton (“Переключити”);

class StartL implements ActionListener {

public void actionPerformed(ActionEvent e) {

if (sp == null)

sp = new SeparateSubTask();

}

class 0n0ffL implements ActionListener {

public void actionPerformed(ActionEvent e) {

if (sp! == null)

sp. invertFlag();

}

public void init() {

Container cp = getContentPane();

cp. setLayout (new FlowLayout());

cp. add(t);

start. addActionLisener(new StartL());

cp. add(start);

on0ff. addActionLisener(new 0n0ffL());

cp. add(on0ff);

}

public static void main(Sting[] args) {

Console. run(new Counter1(), 300, 100);

}

Приклад 4. Використання інтерфейсу Runnable для перетворення головного класу в потік

import javax. swing. *;

import java. awt. event. *;

import java. awt. *;

import com. bruceeckel. swing. *;

public class Counter3 extends JApplet implements Runnable {

private int count = 0;

private boolean runFlag = true;

private Thread selfThread = null;

private JButton

start = new JButton (“Почати”),

on0ff = new JButton (“Переключити”);

private JTextField t = new JTextField(10);

public void run() {

while (true) {

try {

selfThread. sleep(100);

}

catch(InterruptedException e) {

System. err. println(“ Перервано”); }

if (runFlag)

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

}

class StartL implements ActionListener {

public void actionPerformed(ActionEvent e) {

if (selfThread == null) {

selfThread = new Thread(Counter3. this);

selfThread. start(); }

}

class 0n0ffL implements ActionListener {

public void actionPerformed(ActionEvent e) {

runFlag =! runFlag;

}

public void init() {

Container cp = getContentPane();

cp. setLayout (new FlowLayout());

cp. add(t);

start. addActionLisener(new StartL());

cp. add(start);

on0ff. addActionLisener(new 0n0ffL());

cp. add(on0ff);

}

public static void main(Sting[] args) {

Console. run(new Counter1(), 300, 100);

}