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NullPointerException thrown by ExtendedBeanInfo with IBM J9 VM [SPR-10862] #15489

spring-issuemaster opened this issue Aug 27, 2013 · 0 comments


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@spring-issuemaster spring-issuemaster commented Aug 27, 2013

Setanta Mathews opened SPR-10862 and commented


In org.springframework.beans.CachedInstrospectionResults there is the code

this.beanInfo = new ExtendedBeanInfo(Introspector.getBeanInfo(beanClass));

With IBM's J9 VM on Linux, the BeanInfo returned by Introspector.getBeanInfo can return null for calls to BeanInfo#getMethodDescriptors. For example, this will happen when beanClass is

When this happens the following code in ExtendedBeanInfo will throw a null pointer exception:

for (MethodDescriptor md : delegate.getMethodDescriptors())

I took a look at the latest ExtendedBeanInfo and it looks like it is still prone to a null pointer exception.

Note that the Javadoc for BeanInfo#getMethodDescriptors does say that the method can return null.

Simple test, run the following with Oracle's VM and then IBM's


With Oracle you'll get an array object, with IBM you'll get null.

Affects: 3.1.3

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