JAVA GUID

import java.util.UUID;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;

public class TestUUID implements Runnable {
public static void main(String[] args) {
ExecutorService pool = Executors.newFixedThreadPool(5);
for (int i = 0; i < 80; i++) {
pool.execute(new TestUUID());
}
pool.shutdown();
}

public static String genReqID() {
return UUID.randomUUID().toString().replace("-", "").toUpperCase();
}

public void run() {
for (int i = 0; i < 10; i++) {
System.out.println(genReqID());
}
}
}