Description Sebastian Zarnekow 2011-04-06 11:23:31 EDT

if (true) new StringBuilder() else new StringBuffer()

The type of this expression is AbstractStringBuilder & Comparable<? extends CharSequence> or something similar.

However, AbstractStringBuilder is not visible but exposes public methods such as #trimToSize which may only be referenced from classes in the java.lang package. That's why the infered type of the if-expression should take the visibility of potential super types into account.

Proposed solution:
Add an error marker and a quickfix that adds a cast to a visible type such as CharSequence, Serializable or Object or at least a hint on what the user should do to avoid the problem.

Scheduled for Indigo but marked as minor since this is a rare corner case.