Even for such a small wrapper Java developers usually prefer to keep fields private and implement getters and setters if they are needed. In this case it can be enough to make all fields final to make sure that this will be immutable object.
Also the hashCode is not optimal - all pointers to the same file will return same number. While this is unlikely to cause user visible problems it can slow down various operation using this objects.
BTW: I do not see any usage of public ItemPointer(Object file2, Location location, Location location2, Definition definition, String zipFilePath). Is it used in pydev_ext?