[[java-aggs-metrics-valuecount]]
==== Value Count Aggregation

Here is how you can use
{ref}/search-aggregations-metrics-valuecount-aggregation.html[Value Count Aggregation]
with Java API.


===== Prepare aggregation request

Here is an example on how to create the aggregation request:

[source,java]
--------------------------------------------------
MetricsAggregationBuilder aggregation =
        AggregationBuilders
                .count("agg")
                .field("height");
--------------------------------------------------


===== Use aggregation response

Import Aggregation definition classes:

[source,java]
--------------------------------------------------
import org.elasticsearch.search.aggregations.metrics.valuecount.ValueCount;
--------------------------------------------------

[source,java]
--------------------------------------------------
// sr is here your SearchResponse object
ValueCount agg = sr.getAggregations().get("agg");
long value = agg.getValue();
--------------------------------------------------