8287602: (fs) Avoid redundant HashMap.containsKey call in MimeTypesFi…

…leTypeDetector.putIfAbsent Reviewed-by: bpb, jpai, alanb
openjdk · Jun 1, 2022 · 27ad1d5 · 27ad1d5
1 parent 239ac2a
commit 27ad1d5
Showing 1 changed file with 2 additions and 5 deletions.
diff --git a/src/java.base/unix/classes/sun/nio/fs/MimeTypesFileTypeDetector.java b/src/java.base/unix/classes/sun/nio/fs/MimeTypesFileTypeDetector.java
@@ -187,11 +187,8 @@ private void parseMimeEntry(String entry) {
     }
 
     private void putIfAbsent(String key, String value) {
-        if (key != null && !key.isEmpty() &&
-            value != null && !value.isEmpty() &&
-            !mimeTypeMap.containsKey(key))
-        {
-            mimeTypeMap.put(key, value);
+        if (!key.isEmpty() && !value.isEmpty()) {
+            mimeTypeMap.putIfAbsent(key, value);
         }
     }
 }