public void setAlarmActions(java.util.Collection<String> alarmActions) {
        if (alarmActions == null) {
            this.alarmActions = null;
            return;
        }

        this.alarmActions = new com.amazonaws.internal.SdkInternalList<String>(alarmActions);
    }
<p>
The actions to execute when this alarm transitions to the ALARM state from any other state. Each action is
specified as an Amazon Resource Name (ARN).
</p>

@param alarmActions
       The actions to execute when this alarm transitions to the ALARM state from any other state. Each action is
       specified as an Amazon Resource Name (ARN).
aws-java-sdk-cloudwatch/src/main/java/com/amazonaws/services/cloudwatch/model/CompositeAlarm.java