フリー問題

問題文

A method returns an Integer that happens to be null, and the caller stores it into an int. What occurs at that moment?

選択肢

1. The conversion silently attempts the implied numeric extraction, and the absent object therefore raises the pointer error immediately.
2. The conversion silently attempts the implied address copy, and the absent object therefore raises the pointer error immediately.
3. The conversion silently attempts the implied numeric extraction, and the absent object therefore raises the arithmetic error immediately.
4. The conversion silently attempts the implied address copy, and the absent object therefore raises the arithmetic error immediately.