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import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Date;
public class Task implements Runnable {
long n;
String id;
private long fib(long n) {
if (n == 0)
return 0L;
if (n == 1)
return 1L;
return fib(n - 1) + fib(n - 2);
}
public Task(long n, String id) {
this.n = n;
this.id = id;
}
public void run() {
Date d = new Date();
DateFormat df = new SimpleDateFormat("HH:mm:ss:SSS");
long startTime = System.currentTimeMillis();
d.setTime(startTime);
System.out.println("Starting task " + id + " at " + df.format(d));
fib(n);
long endTime = System.currentTimeMillis();
d.setTime(endTime);
System.out.println("Ending task " + id + " at " + df.format(d)
+ " after " + (endTime - startTime) + " milliseconds");
}
public static void main(String[] args) {
int nThreads = Integer.parseInt(args[0]);
long n = Long.parseLong(args[1]);
Thread t[] = new Thread[nThreads];
for (int i = 0; i < t.length; i++) {
t[i] = new Thread(new Task(n, "Task " + i));
t[i].start();
}
for (int i = 0; i < t.length; i++) {
try {
t[i].join();
} catch (InterruptedException ie) {
}
}
}
}
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