[[breaking_70_java_changes]] === Java API changes ==== `isShardsAcked` deprecated in `6.2` has been removed `isShardsAcked` has been replaced by `isShardsAcknowledged` in `CreateIndexResponse`, `RolloverResponse` and `CreateIndexClusterStateUpdateResponse`. ==== `prepareExecute` removed from the client api The `prepareExecute` method which created a request builder has been removed from the client api. Instead, construct a builder for the appropriate request directly. === Some Aggregation classes have moved packages * All classes present in `org.elasticsearch.search.aggregations.metrics.*` packages were moved to a single `org.elasticsearch.search.aggregations.metrics` package.