試題詳解

 Which two code fragments, inserted independently at line 5, will compile without warnings? (Choose two.)
(A) public void addStrings(List list){
(B) public void addStrings(List＜String＞ list){
(C) public void addStrings(List＜? super String＞ list){
(D) public void addStrings(List＜? extends String＞ list){