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1. Ö÷Ï̲߳»µÈ´ý
public class CopyOfTestThreadPool {
public static void main(String args[]) throws InterruptedException {
// only two threads
ExecutorService exec = Executors.newFixedThreadPool(20);
List<Long> list = new ArrayList<Long>();
for(int index = 0; index < 1000000; index++){
list.add(System.nanoTime());
}
long start = System.currentTimeMillis();
for (Long long1 : list) {
final Long l = long1;
exec.execute(new Runnable(){
public void run() {
System.out.println(l);
try {
Thread.sleep(5000);
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}});
}
// must shutdown
exec.shutdown();
long end = System.currentTimeMillis();
System.out.print("¹²¼ÆÓÃʱ ");
System.out.println(end - start);
}
}
2 Ö÷Ï̻߳áµÈ´ý
public class TestCountDownLatch {
public static void main(String[] args) throws InterruptedException {
long start = System.currentTimeMillis();
// ¿ªÊ¼µÄµ¹ÊýËø
final CountDownLatch begin = new CountDownLatch(1);
// ½áÊøµÄµ¹ÊýËø
final CountDownLatch end = new CountDownLatch(10000);
// Ê®ÃûÑ¡ÊÖ
final ExecutorService exec = Executors.newFixedThrea
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package sort;
import java.util.Random;
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