You can use the cancel() method on Future. From the javadocs of scheduleAtFixedRate
Otherwise, the task will only terminate via cancellation or termination of the executor
Here is some example code that wraps a Runnable in another that tracks the number of times the original was run, and cancels after running N times.
public void runNTimes(Runnable task, int maxRunCount, long period, TimeUnit unit, ScheduledExecutorService executor) {
new FixedExecutionRunnable(task, maxRunCount).runNTimes(executor, period, unit);
}
class FixedExecutionRunnable implements Runnable {
private final AtomicInteger runCount = new AtomicInteger();
private final Runnable delegate;
private volatile ScheduledFuture<?> self;
private final int maxRunCount;
public FixedExecutionRunnable(Runnable delegate, int maxRunCount) {
this.delegate = delegate;
this.maxRunCount = maxRunCount;
}
@Override
public void run() {
delegate.run();
if(runCount.incrementAndGet() == maxRunCount) {
boolean interrupted = false;
try {
while(self == null) {
try {
Thread.sleep(1);
} catch (InterruptedException e) {
interrupted = true;
}
}
self.cancel(false);
} finally {
if(interrupted) {
Thread.currentThread().interrupt();
}
}
}
}
public void runNTimes(ScheduledExecutorService executor, long period, TimeUnit unit) {
self = executor.scheduleAtFixedRate(this, 0, period, unit);
}
}