diff --git a/api/current.txt b/api/current.txt
index 164a15badd919..52d05179c7dab 100644
--- a/api/current.txt
+++ b/api/current.txt
@@ -59300,6 +59300,10 @@ package java.util {
     ctor public Locale(java.lang.String, java.lang.String);
     ctor public Locale(java.lang.String);
     method public java.lang.Object clone();
+    method public static java.util.List<java.util.Locale> filter(java.util.List<java.util.Locale.LanguageRange>, java.util.Collection<java.util.Locale>, java.util.Locale.FilteringMode);
+    method public static java.util.List<java.util.Locale> filter(java.util.List<java.util.Locale.LanguageRange>, java.util.Collection<java.util.Locale>);
+    method public static java.util.List<java.lang.String> filterTags(java.util.List<java.util.Locale.LanguageRange>, java.util.Collection<java.lang.String>, java.util.Locale.FilteringMode);
+    method public static java.util.List<java.lang.String> filterTags(java.util.List<java.util.Locale.LanguageRange>, java.util.Collection<java.lang.String>);
     method public static java.util.Locale forLanguageTag(java.lang.String);
     method public static java.util.Locale[] getAvailableLocales();
     method public java.lang.String getCountry();
@@ -59328,6 +59332,8 @@ package java.util {
     method public java.lang.String getUnicodeLocaleType(java.lang.String);
     method public java.lang.String getVariant();
     method public boolean hasExtensions();
+    method public static java.util.Locale lookup(java.util.List<java.util.Locale.LanguageRange>, java.util.Collection<java.util.Locale>);
+    method public static java.lang.String lookupTag(java.util.List<java.util.Locale.LanguageRange>, java.util.Collection<java.lang.String>);
     method public static synchronized void setDefault(java.util.Locale);
     method public static synchronized void setDefault(java.util.Locale.Category, java.util.Locale);
     method public java.util.Locale stripExtensions();
@@ -59383,6 +59389,28 @@ package java.util {
     enum_constant public static final java.util.Locale.Category FORMAT;
   }
 
+  public static final class Locale.FilteringMode extends java.lang.Enum {
+    method public static java.util.Locale.FilteringMode valueOf(java.lang.String);
+    method public static final java.util.Locale.FilteringMode[] values();
+    enum_constant public static final java.util.Locale.FilteringMode AUTOSELECT_FILTERING;
+    enum_constant public static final java.util.Locale.FilteringMode EXTENDED_FILTERING;
+    enum_constant public static final java.util.Locale.FilteringMode IGNORE_EXTENDED_RANGES;
+    enum_constant public static final java.util.Locale.FilteringMode MAP_EXTENDED_RANGES;
+    enum_constant public static final java.util.Locale.FilteringMode REJECT_EXTENDED_RANGES;
+  }
+
+  public static final class Locale.LanguageRange {
+    ctor public Locale.LanguageRange(java.lang.String);
+    ctor public Locale.LanguageRange(java.lang.String, double);
+    method public java.lang.String getRange();
+    method public double getWeight();
+    method public static java.util.List<java.util.Locale.LanguageRange> mapEquivalents(java.util.List<java.util.Locale.LanguageRange>, java.util.Map<java.lang.String, java.util.List<java.lang.String>>);
+    method public static java.util.List<java.util.Locale.LanguageRange> parse(java.lang.String);
+    method public static java.util.List<java.util.Locale.LanguageRange> parse(java.lang.String, java.util.Map<java.lang.String, java.util.List<java.lang.String>>);
+    field public static final double MAX_WEIGHT = 1.0;
+    field public static final double MIN_WEIGHT = 0.0;
+  }
+
   public class LongSummaryStatistics implements java.util.function.IntConsumer java.util.function.LongConsumer {
     ctor public LongSummaryStatistics();
     method public void accept(int);
diff --git a/api/system-current.txt b/api/system-current.txt
index 67baaaa47b1c2..5041eac4e4c80 100644
--- a/api/system-current.txt
+++ b/api/system-current.txt
@@ -62861,6 +62861,10 @@ package java.util {
     ctor public Locale(java.lang.String, java.lang.String);
     ctor public Locale(java.lang.String);
     method public java.lang.Object clone();
+    method public static java.util.List<java.util.Locale> filter(java.util.List<java.util.Locale.LanguageRange>, java.util.Collection<java.util.Locale>, java.util.Locale.FilteringMode);
+    method public static java.util.List<java.util.Locale> filter(java.util.List<java.util.Locale.LanguageRange>, java.util.Collection<java.util.Locale>);
+    method public static java.util.List<java.lang.String> filterTags(java.util.List<java.util.Locale.LanguageRange>, java.util.Collection<java.lang.String>, java.util.Locale.FilteringMode);
+    method public static java.util.List<java.lang.String> filterTags(java.util.List<java.util.Locale.LanguageRange>, java.util.Collection<java.lang.String>);
     method public static java.util.Locale forLanguageTag(java.lang.String);
     method public static java.util.Locale[] getAvailableLocales();
     method public java.lang.String getCountry();
@@ -62889,6 +62893,8 @@ package java.util {
     method public java.lang.String getUnicodeLocaleType(java.lang.String);
     method public java.lang.String getVariant();
     method public boolean hasExtensions();
+    method public static java.util.Locale lookup(java.util.List<java.util.Locale.LanguageRange>, java.util.Collection<java.util.Locale>);
+    method public static java.lang.String lookupTag(java.util.List<java.util.Locale.LanguageRange>, java.util.Collection<java.lang.String>);
     method public static synchronized void setDefault(java.util.Locale);
     method public static synchronized void setDefault(java.util.Locale.Category, java.util.Locale);
     method public java.util.Locale stripExtensions();
@@ -62944,6 +62950,28 @@ package java.util {
     enum_constant public static final java.util.Locale.Category FORMAT;
   }
 
+  public static final class Locale.FilteringMode extends java.lang.Enum {
+    method public static java.util.Locale.FilteringMode valueOf(java.lang.String);
+    method public static final java.util.Locale.FilteringMode[] values();
+    enum_constant public static final java.util.Locale.FilteringMode AUTOSELECT_FILTERING;
+    enum_constant public static final java.util.Locale.FilteringMode EXTENDED_FILTERING;
+    enum_constant public static final java.util.Locale.FilteringMode IGNORE_EXTENDED_RANGES;
+    enum_constant public static final java.util.Locale.FilteringMode MAP_EXTENDED_RANGES;
+    enum_constant public static final java.util.Locale.FilteringMode REJECT_EXTENDED_RANGES;
+  }
+
+  public static final class Locale.LanguageRange {
+    ctor public Locale.LanguageRange(java.lang.String);
+    ctor public Locale.LanguageRange(java.lang.String, double);
+    method public java.lang.String getRange();
+    method public double getWeight();
+    method public static java.util.List<java.util.Locale.LanguageRange> mapEquivalents(java.util.List<java.util.Locale.LanguageRange>, java.util.Map<java.lang.String, java.util.List<java.lang.String>>);
+    method public static java.util.List<java.util.Locale.LanguageRange> parse(java.lang.String);
+    method public static java.util.List<java.util.Locale.LanguageRange> parse(java.lang.String, java.util.Map<java.lang.String, java.util.List<java.lang.String>>);
+    field public static final double MAX_WEIGHT = 1.0;
+    field public static final double MIN_WEIGHT = 0.0;
+  }
+
   public class LongSummaryStatistics implements java.util.function.IntConsumer java.util.function.LongConsumer {
     ctor public LongSummaryStatistics();
     method public void accept(int);
diff --git a/api/test-current.txt b/api/test-current.txt
index c1f289e408b31..74450e6d5082f 100644
--- a/api/test-current.txt
+++ b/api/test-current.txt
@@ -59391,6 +59391,10 @@ package java.util {
     ctor public Locale(java.lang.String, java.lang.String);
     ctor public Locale(java.lang.String);
     method public java.lang.Object clone();
+    method public static java.util.List<java.util.Locale> filter(java.util.List<java.util.Locale.LanguageRange>, java.util.Collection<java.util.Locale>, java.util.Locale.FilteringMode);
+    method public static java.util.List<java.util.Locale> filter(java.util.List<java.util.Locale.LanguageRange>, java.util.Collection<java.util.Locale>);
+    method public static java.util.List<java.lang.String> filterTags(java.util.List<java.util.Locale.LanguageRange>, java.util.Collection<java.lang.String>, java.util.Locale.FilteringMode);
+    method public static java.util.List<java.lang.String> filterTags(java.util.List<java.util.Locale.LanguageRange>, java.util.Collection<java.lang.String>);
     method public static java.util.Locale forLanguageTag(java.lang.String);
     method public static java.util.Locale[] getAvailableLocales();
     method public java.lang.String getCountry();
@@ -59419,6 +59423,8 @@ package java.util {
     method public java.lang.String getUnicodeLocaleType(java.lang.String);
     method public java.lang.String getVariant();
     method public boolean hasExtensions();
+    method public static java.util.Locale lookup(java.util.List<java.util.Locale.LanguageRange>, java.util.Collection<java.util.Locale>);
+    method public static java.lang.String lookupTag(java.util.List<java.util.Locale.LanguageRange>, java.util.Collection<java.lang.String>);
     method public static synchronized void setDefault(java.util.Locale);
     method public static synchronized void setDefault(java.util.Locale.Category, java.util.Locale);
     method public java.util.Locale stripExtensions();
@@ -59474,6 +59480,28 @@ package java.util {
     enum_constant public static final java.util.Locale.Category FORMAT;
   }
 
+  public static final class Locale.FilteringMode extends java.lang.Enum {
+    method public static java.util.Locale.FilteringMode valueOf(java.lang.String);
+    method public static final java.util.Locale.FilteringMode[] values();
+    enum_constant public static final java.util.Locale.FilteringMode AUTOSELECT_FILTERING;
+    enum_constant public static final java.util.Locale.FilteringMode EXTENDED_FILTERING;
+    enum_constant public static final java.util.Locale.FilteringMode IGNORE_EXTENDED_RANGES;
+    enum_constant public static final java.util.Locale.FilteringMode MAP_EXTENDED_RANGES;
+    enum_constant public static final java.util.Locale.FilteringMode REJECT_EXTENDED_RANGES;
+  }
+
+  public static final class Locale.LanguageRange {
+    ctor public Locale.LanguageRange(java.lang.String);
+    ctor public Locale.LanguageRange(java.lang.String, double);
+    method public java.lang.String getRange();
+    method public double getWeight();
+    method public static java.util.List<java.util.Locale.LanguageRange> mapEquivalents(java.util.List<java.util.Locale.LanguageRange>, java.util.Map<java.lang.String, java.util.List<java.lang.String>>);
+    method public static java.util.List<java.util.Locale.LanguageRange> parse(java.lang.String);
+    method public static java.util.List<java.util.Locale.LanguageRange> parse(java.lang.String, java.util.Map<java.lang.String, java.util.List<java.lang.String>>);
+    field public static final double MAX_WEIGHT = 1.0;
+    field public static final double MIN_WEIGHT = 0.0;
+  }
+
   public class LongSummaryStatistics implements java.util.function.IntConsumer java.util.function.LongConsumer {
     ctor public LongSummaryStatistics();
     method public void accept(int);