1 files changed, 7 insertions, 4 deletions
diff --git a/mllib/src/main/scala/org/apache/spark/ml/param/params.scala b/mllib/src/main/scala/org/apache/spark/ml/param/params.scala
index 8fd46aef4b..4b4340af54 100644
--- a/mllib/src/main/scala/org/apache/spark/ml/param/params.scala
+++ b/mllib/src/main/scala/org/apache/spark/ml/param/params.scala
@@ -17,13 +17,12 @@
 
 package org.apache.spark.ml.param
 
-import java.lang.reflect.Modifier
-
-import org.apache.spark.annotation.AlphaComponent
-
 import scala.annotation.varargs
 import scala.collection.mutable
 
+import java.lang.reflect.Modifier
+
+import org.apache.spark.annotation.AlphaComponent
 import org.apache.spark.ml.Identifiable
 
 /**
@@ -221,7 +220,9 @@ class ParamMap private[ml] (private val map: mutable.Map[Param[Any], Any]) exten
 
   /**
    * Puts a list of param pairs (overwrites if the input params exists).
+   * Not usable from Java
    */
+  @varargs
   def put(paramPairs: ParamPair[_]*): this.type = {
     paramPairs.foreach { p =>
       put(p.param.asInstanceOf[Param[Any]], p.value)
@@ -282,6 +283,7 @@ class ParamMap private[ml] (private val map: mutable.Map[Param[Any], Any]) exten
    * where the latter overwrites this if there exists conflicts.
    */
   def ++(other: ParamMap): ParamMap = {
+    // TODO: Provide a better method name for Java users.
     new ParamMap(this.map ++ other.map)
   }
 
@@ -290,6 +292,7 @@ class ParamMap private[ml] (private val map: mutable.Map[Param[Any], Any]) exten
    * Adds all parameters from the input param map into this param map.
    */
   def ++=(other: ParamMap): this.type = {
+    // TODO: Provide a better method name for Java users.
     this.map ++= other.map
     this
   }