diff --git a/js/js.libraries/src/core/collections.kt b/js/js.libraries/src/core/collections.kt
index 17e6631628f..f083de320ee 100644
--- a/js/js.libraries/src/core/collections.kt
+++ b/js/js.libraries/src/core/collections.kt
@@ -16,7 +16,6 @@
 
 package kotlin.collections
 
-import java.util.Comparator
 import kotlin.comparisons.naturalOrder
 
 @library("copyToArray")
diff --git a/js/js.libraries/src/core/generated/_ArraysJs.kt b/js/js.libraries/src/core/generated/_ArraysJs.kt
index 7cd4f4077fc..fca5e2162bc 100644
--- a/js/js.libraries/src/core/generated/_ArraysJs.kt
+++ b/js/js.libraries/src/core/generated/_ArraysJs.kt
@@ -9,7 +9,6 @@ package kotlin.collections
 //
 
 import kotlin.comparisons.*
-import java.util.*
 
 /**
  * Returns a [List] that wraps the original array.
diff --git a/libraries/stdlib/src/generated/_Arrays.kt b/libraries/stdlib/src/generated/_Arrays.kt
index f1f498132e2..1e1b75c5903 100644
--- a/libraries/stdlib/src/generated/_Arrays.kt
+++ b/libraries/stdlib/src/generated/_Arrays.kt
@@ -9,7 +9,6 @@ package kotlin.collections
 //
 
 import kotlin.comparisons.*
-import java.util.*
 
 /**
  * Returns 1st *element* from the collection.
diff --git a/libraries/stdlib/src/generated/_Collections.kt b/libraries/stdlib/src/generated/_Collections.kt
index 25d4cc64675..692554f2fed 100644
--- a/libraries/stdlib/src/generated/_Collections.kt
+++ b/libraries/stdlib/src/generated/_Collections.kt
@@ -9,7 +9,6 @@ package kotlin.collections
 //
 
 import kotlin.comparisons.*
-import java.util.*
 
 /**
  * Returns 1st *element* from the collection.
diff --git a/libraries/stdlib/src/generated/_Maps.kt b/libraries/stdlib/src/generated/_Maps.kt
index 7192ebccc01..62a462c6c7f 100644
--- a/libraries/stdlib/src/generated/_Maps.kt
+++ b/libraries/stdlib/src/generated/_Maps.kt
@@ -9,7 +9,6 @@ package kotlin.collections
 //
 
 import kotlin.comparisons.*
-import java.util.*
 
 /**
  * Returns a [List] containing all key-value pairs.
diff --git a/libraries/stdlib/src/generated/_Ranges.kt b/libraries/stdlib/src/generated/_Ranges.kt
index 46edef3b720..9f856f13760 100644
--- a/libraries/stdlib/src/generated/_Ranges.kt
+++ b/libraries/stdlib/src/generated/_Ranges.kt
@@ -9,7 +9,6 @@ package kotlin.ranges
 //
 
 import kotlin.comparisons.*
-import java.util.*
 
 /**
  * Checks if the specified [value] belongs to this range.
diff --git a/libraries/stdlib/src/generated/_Sequences.kt b/libraries/stdlib/src/generated/_Sequences.kt
index 2e923122f5a..a6148c2e877 100644
--- a/libraries/stdlib/src/generated/_Sequences.kt
+++ b/libraries/stdlib/src/generated/_Sequences.kt
@@ -9,7 +9,6 @@ package kotlin.sequences
 //
 
 import kotlin.comparisons.*
-import java.util.*
 
 /**
  * Returns `true` if [element] is found in the sequence.
diff --git a/libraries/stdlib/src/generated/_Sets.kt b/libraries/stdlib/src/generated/_Sets.kt
index 6f9f5f076b4..ac4ab1799ad 100644
--- a/libraries/stdlib/src/generated/_Sets.kt
+++ b/libraries/stdlib/src/generated/_Sets.kt
@@ -9,7 +9,6 @@ package kotlin.collections
 //
 
 import kotlin.comparisons.*
-import java.util.*
 
 /**
  * Returns a set containing all elements of the original set except the given [element].
diff --git a/libraries/stdlib/src/generated/_Strings.kt b/libraries/stdlib/src/generated/_Strings.kt
index 3abbde33eb6..485f3611e09 100644
--- a/libraries/stdlib/src/generated/_Strings.kt
+++ b/libraries/stdlib/src/generated/_Strings.kt
@@ -9,7 +9,6 @@ package kotlin.text
 //
 
 import kotlin.comparisons.*
-import java.util.*
 
 /**
  * Returns a character at the given [index] or throws an [IndexOutOfBoundsException] if the [index] is out of bounds of this char sequence.
diff --git a/libraries/stdlib/src/kotlin/collections/Iterables.kt b/libraries/stdlib/src/kotlin/collections/Iterables.kt
index c9abe4a882f..b46421658f3 100644
--- a/libraries/stdlib/src/kotlin/collections/Iterables.kt
+++ b/libraries/stdlib/src/kotlin/collections/Iterables.kt
@@ -17,8 +17,6 @@
 @file:kotlin.jvm.JvmName("CollectionsKt")
 package kotlin.collections
 
-import java.util.*
-
 /**
  * Given an [iterator] function constructs an [Iterable] instance that returns values through the [Iterator]
  * provided by that function.
diff --git a/libraries/stdlib/src/kotlin/comparisons/Comparisons.kt b/libraries/stdlib/src/kotlin/comparisons/Comparisons.kt
index 6141994958a..c352bd02321 100644
--- a/libraries/stdlib/src/kotlin/comparisons/Comparisons.kt
+++ b/libraries/stdlib/src/kotlin/comparisons/Comparisons.kt
@@ -17,8 +17,6 @@
 
 package kotlin.comparisons
 
-import java.util.Comparator
-
 /**
  * Compares two values using the specified functions [selectors] to calculate the result of the comparison.
  * The functions are called sequentially, receive the given values [a] and [b] and return [Comparable]
diff --git a/libraries/stdlib/test/collections/IterableTests.kt b/libraries/stdlib/test/collections/IterableTests.kt
index 3fb8f34de62..9ac76ea86bd 100644
--- a/libraries/stdlib/test/collections/IterableTests.kt
+++ b/libraries/stdlib/test/collections/IterableTests.kt
@@ -17,7 +17,6 @@
 package test.collections
 
 import org.junit.Test
-import java.util.*
 import kotlin.test.*
 
 fun <T> iterableOf(vararg items: T): Iterable<T> = Iterable { items.iterator() }
diff --git a/libraries/stdlib/test/js/JsCollectionsTest.kt b/libraries/stdlib/test/js/JsCollectionsTest.kt
index 17b8b549250..47202349807 100644
--- a/libraries/stdlib/test/js/JsCollectionsTest.kt
+++ b/libraries/stdlib/test/js/JsCollectionsTest.kt
@@ -38,7 +38,7 @@ class JsCollectionsTest {
     }
 
     @test fun arrayListCapacity() {
-        val list = java.util.ArrayList<Any>(20)
+        val list = ArrayList<Any>(20)
         list.ensureCapacity(100)
         list.trimToSize()
         assertTrue(list.isEmpty())
diff --git a/libraries/tools/kotlin-stdlib-gen/src/generators/GenerateStandardLib.kt b/libraries/tools/kotlin-stdlib-gen/src/generators/GenerateStandardLib.kt
index 70d5feb4a65..e23c6e5ff4b 100644
--- a/libraries/tools/kotlin-stdlib-gen/src/generators/GenerateStandardLib.kt
+++ b/libraries/tools/kotlin-stdlib-gen/src/generators/GenerateStandardLib.kt
@@ -81,8 +81,8 @@ private fun List<ConcreteFunction>.writeTo(file: File, sourceFile: SourceFile) {
         writer.append("@file:kotlin.jvm.JvmName(\"${sourceFile.jvmClassName}\")\n\n")
         writer.append("package ${sourceFile.packageName ?: "kotlin"}\n\n")
         writer.append("$COMMON_AUTOGENERATED_WARNING\n\n")
-        writer.append("import kotlin.comparisons.*\n")
-        writer.append("import java.util.*\n\n")
+        writer.append("import kotlin.comparisons.*\n\n")
+
         for (f in this) {
             f.textBuilder(writer)
         }