classSynapse{2.protectedintgap(){return7;}3.}4.5.classCrebextendsSynapse{6.//insertcodehere7.}分别插入到第6行 哪三行可以编译?()
classSynapse{2.protectedintgap(){return7;}3.}4.5.classCrebextendsSynapse{6.//insertcodehere7.}分别插入到第6行,哪三行可以编译?()
A、intgap(){return7;}
B、publicintgap(){return7;}
C、privateintgap(intx){return7;}
D、protectedCrebgap(){returnthis;}
E、publicintgap(){returnInteger.getInteger("42");}