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| author | PJ Fanning <fanningpj@apache.org> | 2024-10-15 12:58:33 +0000 |
|---|---|---|
| committer | PJ Fanning <fanningpj@apache.org> | 2024-10-15 12:58:33 +0000 |
| commit | ab68210d2ace09d73a9468d908e61ab56750bb31 (patch) | |
| tree | bac858522650bcb0323cac9d9ff8259c544ed3e9 | |
| parent | f8bbec3104cbffb52bb1c9784a5747a1f339d0f9 (diff) | |
| download | poi-ab68210d2ace09d73a9468d908e61ab56750bb31.tar.gz poi-ab68210d2ace09d73a9468d908e61ab56750bb31.zip | |
[github-709] Make BitFieldFactory threadsafe. Thanks to ZhangChen. This closes #709
git-svn-id: https://svn.apache.org/repos/asf/poi/trunk@1921332 13f79535-47bb-0310-9956-ffa450edef68
| -rw-r--r-- | poi/src/main/java/org/apache/poi/util/BitFieldFactory.java | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/poi/src/main/java/org/apache/poi/util/BitFieldFactory.java b/poi/src/main/java/org/apache/poi/util/BitFieldFactory.java index 4893d5e61b..40e69cb0bd 100644 --- a/poi/src/main/java/org/apache/poi/util/BitFieldFactory.java +++ b/poi/src/main/java/org/apache/poi/util/BitFieldFactory.java @@ -18,13 +18,13 @@ package org.apache.poi.util; -import java.util.*; +import java.util.concurrent.ConcurrentHashMap; /** * Returns immutable Bitfield instances. */ public class BitFieldFactory { - private static Map<Integer, BitField> instances = new HashMap<>(); + private static final ConcurrentHashMap<Integer, BitField> instances = new ConcurrentHashMap<>(); public static BitField getInstance(int mask) { return instances.computeIfAbsent(mask, k -> new BitField(mask)); |