Unify on Map.of

2 files changed, 2 insertions, 4 deletions

diff --git a/flags/src/main/java/com/yahoo/vespa/flags/file/FlagDbFile.java b/flags/src/main/java/com/yahoo/vespa/flags/file/FlagDbFile.java
index c4597d1d3b4..73803e5bc5f 100644
--- a/flags/src/main/java/com/yahoo/vespa/flags/file/FlagDbFile.java
+++ b/flags/src/main/java/com/yahoo/vespa/flags/file/FlagDbFile.java
@@ -14,7 +14,6 @@ import java.nio.file.Files;
 import java.nio.file.NoSuchFileException;
 import java.nio.file.Path;
 import java.util.ArrayList;
-import java.util.Collections;
 import java.util.HashSet;
 import java.util.List;
 import java.util.Map;
@@ -55,7 +54,7 @@ public class FlagDbFile {
 
     public Map<FlagId, FlagData> read() {
         Optional<byte[]> bytes = readFile();
-        if (!bytes.isPresent()) return Collections.emptyMap();
+        if (!bytes.isPresent()) return Map.of();
         return FlagData.deserializeList(bytes.get()).stream().collect(Collectors.toMap(FlagData::id, Function.identity()));
     }
 
diff --git a/flags/src/test/java/com/yahoo/vespa/flags/file/FlagDbFileTest.java b/flags/src/test/java/com/yahoo/vespa/flags/file/FlagDbFileTest.java
index 4ea4f8ab638..d8530bf0a9d 100644
--- a/flags/src/test/java/com/yahoo/vespa/flags/file/FlagDbFileTest.java
+++ b/flags/src/test/java/com/yahoo/vespa/flags/file/FlagDbFileTest.java
@@ -12,7 +12,6 @@ import org.junit.jupiter.api.Test;
 import java.nio.charset.StandardCharsets;
 import java.nio.file.FileSystem;
 import java.nio.file.Files;
-import java.util.Collections;
 import java.util.HashMap;
 import java.util.Map;
 
@@ -68,7 +67,7 @@ public class FlagDbFileTest {
         assertThat(anotherReadDataMap, IsMapContaining.hasKey(id3));
         assertThat(anotherReadDataMap.get(id1).serializeToJson(), equalTo("{\"id\":\"id1\",\"attributes\":{\"hostname\":\"h1\"}}"));
 
-        assertThat(flagDb.sync(Collections.emptyMap()), equalTo(true));
+        assertThat(flagDb.sync(Map.of()), equalTo(true));
         assertThat(getDbContent(), equalTo("{\"flags\":[]}"));
     }