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7051516: ThreadLocalRandom seed is never initialized so all instances generate the same sequence

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Reviewed-by: chegar, dholmes, mduigou
This commit is contained in:
Doug Lea 2011-06-20 12:27:20 +01:00
parent 8bdce645f3
commit 58f7b19611
1 changed files with 7 additions and 1 deletions

8
jdk/src/share/classes/java/util/Random.java

@ -118,7 +118,13 @@ class Random implements java.io.Serializable {
* @see #setSeed(long)
*/
public Random(long seed) {
this.seed = new AtomicLong(initialScramble(seed));
if (getClass() == Random.class)
this.seed = new AtomicLong(initialScramble(seed));
else {
// subclass might have overriden setSeed
this.seed = new AtomicLong();
setSeed(seed);
}
}
private static long initialScramble(long seed) {