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//: concurrency/ThreadVariations.java

// Creating threads with inner classes.

import java.util.concurrent.*;

import static net.mindview.util.Print.*;

// Using a named inner class:

class InnerThread1 {

private int countDown = 5;

private Inner inner;

private class Inner extends Thread {

Inner(String name) {

super(name);

start();

}

public void run() {

try {

while(true) {

print(this);

if(--countDown == 0) return;

sleep(10);

}

} catch(InterruptedException e) {

print("interrupted");

}

}

public String toString() {

return getName() + ": " + countDown;

}

}

public InnerThread1(String name) {

inner = new Inner(name);

}

}

// Using an anonymous inner class:

class InnerThread2 {

private int countDown = 5;

private Thread t;

public InnerThread2(String name) {

t = new Thread(name) {

public void run() {

try {

while(true) {

print(this);

if(--countDown == 0) return;

sleep(10);

}

} catch(InterruptedException e) {

print("sleep() interrupted");

}

}

public String toString() {

return getName() + ": " + countDown;

}

};

t.start();

}

}

// Using a named Runnable implementation:

class InnerRunnable1 {

private int countDown = 5;

private Inner inner;

private class Inner implements Runnable {

Thread t;

Inner(String name) {

t = new Thread(this, name);

t.start();

}

public void run() {

try {

while(true) {

print(this);

if(--countDown == 0) return;

TimeUnit.MILLISECONDS.sleep(10);

}

} catch(InterruptedException e) {

print("sleep() interrupted");

}

}

public String toString() {

return t.getName() + ": " + countDown;

}

}

public InnerRunnable1(String name) {

inner = new Inner(name);

}

}

// Using an anonymous Runnable implementation:

class InnerRunnable2 {

private int countDown = 5;

private Thread t;

public InnerRunnable2(String name) {

t = new Thread(new Runnable() {

public void run() {

try {

while(true) {

print(this);

if(--countDown == 0) return;

TimeUnit.MILLISECONDS.sleep(10);

}

} catch(InterruptedException e) {

print("sleep() interrupted");

}

}

public String toString() {

return Thread.currentThread().getName() +

": " + countDown;

}

}, name);

t.start();

}

}

// A separate method to run some code as a task:

class ThreadMethod {

private int countDown = 5;

private Thread t;

private String name;

public ThreadMethod(String name) { this.name = name; }

public void runTask() {

if(t == null) {

t = new Thread(name) {

public void run() {

try {

while(true) {

print(this);

if(--countDown == 0) return;

sleep(10);

}

} catch(InterruptedException e) {

print("sleep() interrupted");

}

}

public String toString() {

return getName() + ": " + countDown;

}

};

t.start();

}

}

}

public class ThreadVariations {

public static void main(String[] args) {

new InnerThread1("InnerThread1");

new InnerThread2("InnerThread2");

new InnerRunnable1("InnerRunnable1");

new InnerRunnable2("InnerRunnable2");

new ThreadMethod("ThreadMethod").runTask();

}

} /* (Execute to see output) *///:~