public void setNamespace(String namespace) {
        this.namespace = namespace;
    }
<p>
The namespace for the metric associated specified in <code>MetricName</code>.
</p>

@param namespace
       The namespace for the metric associated specified in <code>MetricName</code>.
aws-java-sdk-cloudwatch/src/main/java/com/amazonaws/services/cloudwatch/model/PutMetricAlarmRequest.java