General Motors (GM) Software Developer interview questions

There was a series of 4 interviews over a 3 1/2 period. The first was with the initial recruiter. The second was with a team leader in the department. Third was a video conference with hiring manager and another senior person. Up to this point it's been the standard STAR questions that everybody else has reported. The fourth interview was similar to the 3rd but was over the phone and was much more technical. They asked about Java reflections, can you override a overloaded method etc. I don't remember anyone else describing a hard Java grilling. But obviously I didn't do well because the next day I got a rejection letter.