Hi,
I've added quite some '@Nullable' annotations to methods. They indicate
that a method might return null. How does that help? Assume you have
code like this:
myObject.foo().someMethod();
Now if foo() returns null, this would throw a NullPointerException. But
when foo() has been annotated (e.g. "@Nullable public String foo()
{...}"), your IDE can warn you about this code. IntelliJ warns by
default, not sure about Eclipse.
I suggest that all methods that may return null should be annotated with
@Nullable (org.jetbrains.annotations.Nullable), not just public methods.
Anyway, often it's even better to not return null, e.g. if a list is
returned, the list may be empty but not null. Also, for public methods
it should be documented in javadoc when a method can return null.
Regards
Daniel
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