During the [JDK-8344891 Remove uses of sun.misc.ReflectUtil in java.desktop](https://bugs.openjdk.org/browse/JDK-8344891) it was discovered that `beans/finder/MethodFinder.findMethod' incorrectly returned null if a signature was not in the cache and added it to the cache if it was already there:
Method method = CACHE.get(signature); return (method == null) ? method : CACHE.create(signature); This resulted in a [significant drop in performance](https://bugs.openjdk.org/browse/JDK-8350573). ---- Before ReflectUtil was removed, it worked by coincidence: Method method = CACHE.get(signature); return (method == null) || isPackageAccessible(method.getDeclaringClass()) ? method : CACHE.create(signature); 1. `Cache#get` non-obviously creates a value in Cache, this in turn allowed us to avoid the NPE in the `(method == null) || isPackageAccessible(method.getDeclaringClass())` condition https://github.com/openjdk/jdk/blob/d6c4be672f6348f8ed985416ed90d0447f5d5bb3/src/java.desktop/share/classes/com/sun/beans/util/Cache.java#L120-L126 2. `isPackageAccessible(method.getDeclaringClass())` was evaluated as true This is how we previously returned the cached value. --- So the solution is obvious: Method method = CACHE.get(signature); return (method != null) ? method : CACHE.create(signature); Testing is green. ------------- Commit messages: - 8344892: beans/finder/MethodFinder.findMethod incorrectly returns null Changes: https://git.openjdk.org/jdk/pull/23845/files Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=23845&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8344892 Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod Patch: https://git.openjdk.org/jdk/pull/23845.diff Fetch: git fetch https://git.openjdk.org/jdk.git pull/23845/head:pull/23845 PR: https://git.openjdk.org/jdk/pull/23845
