public void setFrequency(String frequency) {
        this.frequency = frequency;
    }
<p>
The frequency (<code>Daily</code>, <code>Weekly</code>, or <code>Monthly</code>).
</p>

@param frequency
       The frequency (<code>Daily</code>, <code>Weekly</code>, or <code>Monthly</code>).
aws-java-sdk-ec2/src/main/java/com/amazonaws/services/ec2/model/ScheduledInstanceRecurrenceRequest.java