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* RFC822Date: Synchronization fix

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zzz
2012-09-26 19:58:08 +00:00
parent 568e2d5063
commit 0533aa7f6f
1 changed files with 14 additions and 6 deletions
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20
router/java/src/net/i2p/router/util/RFC822Date.java
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@ -11,20 +11,24 @@ import java.util.Locale;
*/
public abstract class RFC822Date {
// SimpleDateFormat is not thread-safe, methods must be synchronized
private static final SimpleDateFormat OUTPUT_FORMAT = new SimpleDateFormat("d MMM yyyy HH:mm:ss z", Locale.US);
/**
* http://jimyjoshi.com/blog/2007/08/rfc822dateparsinginjava.html
* Apparently public domain
* Probably don't need all of these...
*/
private static final SimpleDateFormat rfc822DateFormats[] = new SimpleDateFormat[] {
OUTPUT_FORMAT,
new SimpleDateFormat("EEE, d MMM yy HH:mm:ss z", Locale.US),
new SimpleDateFormat("EEE, d MMM yy HH:mm z", Locale.US),
new SimpleDateFormat("EEE, d MMM yyyy HH:mm:ss z", Locale.US),
new SimpleDateFormat("EEE, d MMM yyyy HH:mm z", Locale.US),
new SimpleDateFormat("d MMM yy HH:mm z", Locale.US),
new SimpleDateFormat("d MMM yy HH:mm:ss z", Locale.US),
new SimpleDateFormat("d MMM yyyy HH:mm z", Locale.US),
new SimpleDateFormat("d MMM yyyy HH:mm:ss z", Locale.US)
new SimpleDateFormat("d MMM yyyy HH:mm z", Locale.US)
};
/**
@ -33,7 +37,7 @@ public abstract class RFC822Date {
* @param s non-null
* @return -1 on failure
*/
public static long parse822Date(String s) {
public synchronized static long parse822Date(String s) {
for (int i = 0; i < rfc822DateFormats.length; i++) {
try {
Date date = rfc822DateFormats[i].parse(s);
@ -44,8 +48,12 @@ public abstract class RFC822Date {
return -1;
}
/** @since 0.8.2 */
public static String to822Date(long t) {
return (new SimpleDateFormat("d MMM yyyy HH:mm:ss z", Locale.US)).format(new Date(t));
/**
* Format is "d MMM yyyy HH:mm:ss z"
*
* @since 0.8.2
*/
public synchronized static String to822Date(long t) {
return OUTPUT_FORMAT.format(new Date(t));
}
}