public void setOnDemandHours(String onDemandHours) {
        this.onDemandHours = onDemandHours;
    }
<p>
The number of instance running hours that On-Demand Instances covered.
</p>

@param onDemandHours
       The number of instance running hours that On-Demand Instances covered.
aws-java-sdk-costexplorer/src/main/java/com/amazonaws/services/costexplorer/model/CoverageHours.java