Adobe Software Engineer interview questions

On Campus.Online coding round .3 programming and rest mcqs 4 rounds .cleared 1st round .Simple questions: thread,out-put of given example. One question made me think for a little while but could eventually solve it:a function crashes on return.why?how is it possible?

it is very normal process 5 round and 5 different guy ask you different question, it include detail things with programming design pattern agile and project management,it include detail things with programming design pattern agile and project management