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Synchronizing the COMMON Map so that getInstance doesn't miss a put from a subclass in another thread. LANG-494 

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/lang/trunk@897408 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Henri Yandell 2010-01-09 10:06:42 +00:00
parent 2493294550
commit 72e4ab4b00
1 changed files with 3 additions and 2 deletions
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5
src/main/java/org/apache/commons/lang3/CharSet.java
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@ -17,6 +17,7 @@
package org.apache.commons.lang3;
import java.io.Serializable;
import java.util.Collections;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Map;
@ -75,10 +76,10 @@ public class CharSet implements Serializable {
/**
* A Map of the common cases used in the factory.
* Subclasses can add more common patterns if desired.
* Subclasses can add more common patterns if desired
* @since 2.0
*/
protected static final Map<String, CharSet> COMMON = new HashMap<String, CharSet>();
protected static final Map<String, CharSet> COMMON = Collections.synchronizedMap(new HashMap<String, CharSet>());
static {
COMMON.put(null, EMPTY);