Bad Apples Suite

Collected, reproduced, and harnessed by Stephen Kent and Michael Bond

We've made available 12 real Java null pointer exceptions that we were able to reproduce. The suite automatically downloads, installs, and runs the buggy programs with NPE-inducing inputs.

Download: bad-apples-suite-1.1.tar.gz

Our paper Tracking Bad Apples: Reporting the Origin of Null and Undefined Value Errors provides more information about these bugs.