Google Software Engineer Intern interview questions

I was recommended by a Google employee. The procedure consisted of two back to back phone interviews. Questions were pretty standard. Nothing too fancy. But I was asked to to use Lists in Java with which I was not well versed. So, I ended up Googling during the interview : Not Good. The interviewers were not as friendly as I had heard, but also not harsh. A week after the interview, the recruiter told me over the phone that they were not going to go forward with the process : Bummer. But they did not disclose any reason as to why.