diff options
Diffstat (limited to 'src/share/classes/java/lang/StrictMath.java')
| -rw-r--r-- | src/share/classes/java/lang/StrictMath.java | 21 |
1 files changed, 12 insertions, 9 deletions
diff --git a/src/share/classes/java/lang/StrictMath.java b/src/share/classes/java/lang/StrictMath.java index f2f275b5c..916b82ff9 100644 --- a/src/share/classes/java/lang/StrictMath.java +++ b/src/share/classes/java/lang/StrictMath.java @@ -667,9 +667,9 @@ public final class StrictMath { private static Random randomNumberGenerator; - private static synchronized void initRNG() { - if (randomNumberGenerator == null) - randomNumberGenerator = new Random(); + private static synchronized Random initRNG() { + Random rnd = randomNumberGenerator; + return (rnd == null) ? (randomNumberGenerator = new Random()) : rnd; } /** @@ -680,9 +680,11 @@ public final class StrictMath { * * <p>When this method is first called, it creates a single new * pseudorandom-number generator, exactly as if by the expression - * <blockquote>{@code new java.util.Random}</blockquote> This - * new pseudorandom-number generator is used thereafter for all - * calls to this method and is used nowhere else. + * + * <blockquote>{@code new java.util.Random()}</blockquote> + * + * This new pseudorandom-number generator is used thereafter for + * all calls to this method and is used nowhere else. * * <p>This method is properly synchronized to allow correct use by * more than one thread. However, if many threads need to generate @@ -691,11 +693,12 @@ public final class StrictMath { * * @return a pseudorandom {@code double} greater than or equal * to {@code 0.0} and less than {@code 1.0}. - * @see java.util.Random#nextDouble() + * @see Random#nextDouble() */ public static double random() { - if (randomNumberGenerator == null) initRNG(); - return randomNumberGenerator.nextDouble(); + Random rnd = randomNumberGenerator; + if (rnd == null) rnd = initRNG(); + return rnd.nextDouble(); } /** |