https://issues.apache.org/bugzilla/show_bug.cgi?id=52042
Bug #: 52042
Summary: Possible NullPointerException in
DefaultInstanceManager#processAnnotations
Product: Tomcat 7
Version: 7.0.22
Platform: PC
Status: NEW
Severity: critical
Priority: P2
Component: Catalina
AssignedTo: dev@tomcat.apache.org
ReportedBy: gurkanerdo...@yahoo.com
Classification: Unclassified
NullPointerException exception is thrown randomly from
"DefaultInstanceManager#processAnnotations" method on the following lines,
List<AnnotationCacheEntry> annotations;
synchronized (annotationCache) {
annotations = annotationCache.get(clazz).get();
}
//Null Pointer Exception is thrown, because annotations is NULL
for (AnnotationCacheEntry entry : annotations) {
For example, I have a JSF Managed Bean
public class X extends Y{
}
Open JSF page that contains managed bean X. Randomly opening the same page
throws NullPointerException because for superclass Y "annotations =
annotationCache.get(clazz).get();" returns null.
Using WeakHashMap on "annotationCache" field may be the reason of exception.
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