多项选择题
Which two, independently, will allow Sub to compile?()
A.Change line 2 to:public int a; B.Change line 2 to:protected int a; C.Change line 13 to:public Sub(){this(5);} D.Change line 13 to:public Sub(){super(5);} E.Change line 13 to:public Sub(){super(a);}
多项选择题 Which five methods,inserted independently at line 5,will compile?()
单项选择题 What is the result?()
单项选择题 And the following five fragments: How many of the code fragments, inserted independently at line 12,compile?()