AWS instance creating helper method that sleeps on a timely manner until instances are ready

AwsClient.java

    private static void sleepUntilInstancesIsRunning(AmazonEC2 ec2, Set<String> instanceIdList) throws InterruptedException {
        while(true) {
            DescribeInstancesResult instanceStatusResult = ec2.describeInstances(new DescribeInstancesRequest().withInstanceIds(instanceIdList));

            if(Iterables.all(instanceStatusResult.getReservations(), new Predicate<Reservation>() {
                @Override
                public boolean apply(Reservation input) {
                    return Iterables.all(input.getInstances(), new Predicate<Instance>() {
                        @Override
                        public boolean apply(Instance input) {
                            return input.getState().getName().equalsIgnoreCase(InstanceStateName.Running.toString());
                        }
                    });
                }
            })){
                break;
            } else {
                System.out.println("waiting...");
                Thread.sleep(1000);
            }
        }
    }