--- a/jdk/src/share/classes/java/util/Calendar.java Mon Oct 18 14:45:00 2010 -0700
+++ b/jdk/src/share/classes/java/util/Calendar.java Wed Oct 20 14:41:39 2010 +0900
@@ -51,6 +51,8 @@
import java.security.ProtectionDomain;
import java.text.DateFormat;
import java.text.DateFormatSymbols;
+import java.util.concurrent.ConcurrentHashMap;
+import java.util.concurrent.ConcurrentMap;
import sun.util.BuddhistCalendar;
import sun.util.calendar.ZoneInfo;
import sun.util.resources.LocaleData;
@@ -837,7 +839,8 @@
* Cache to hold the firstDayOfWeek and minimalDaysInFirstWeek
* of a Locale.
*/
- private static Hashtable<Locale, int[]> cachedLocaleData = new Hashtable<Locale, int[]>(3);
+ private static final ConcurrentMap<Locale, int[]> cachedLocaleData
+ = new ConcurrentHashMap<Locale, int[]>(3);
// Special values of stamp[]
/**
@@ -1022,7 +1025,7 @@
// returns a BuddhistCalendar instance.
if ("th".equals(aLocale.getLanguage())
&& ("TH".equals(aLocale.getCountry()))) {
- cal = new BuddhistCalendar(zone, aLocale);
+ cal = new BuddhistCalendar(zone, aLocale);
} else {
cal = new GregorianCalendar(zone, aLocale);
}
@@ -2588,7 +2591,7 @@
data = new int[2];
data[0] = Integer.parseInt(bundle.getString("firstDayOfWeek"));
data[1] = Integer.parseInt(bundle.getString("minimalDaysInFirstWeek"));
- cachedLocaleData.put(desiredLocale, data);
+ cachedLocaleData.putIfAbsent(desiredLocale, data);
}
firstDayOfWeek = data[0];
minimalDaysInFirstWeek = data[1];