[填空题] List＜Integer＞li = new ArrayList＜lnteger＞ () ; li.put (new Integer (3)) ; li (6) (new Integ

[填空题] List＜Integer＞li = new ArrayList＜lnteger＞ () ;

li.put (new Integer (3)) ;

li (6) (new Integer (76));

Interger i li. (7) (1) ;