单项选择题
A.Compilation fails because of an error in line 3.
B.Compilation fails because of an error in line 7.
C.Compilation fails because of an error in line 9.
D.If you define D e = new E(),then e.bMethod() invokes the version of bMethod() defined in Line 5.
E.If you define D e = (D)(new E()),then e.bMethod() invokes the version of bMethod() defined in Line 5.
F.If you define D e = (D)(new E()),then e.bMethod() invokes the version of bMethod() defined in Line 9.
多项选择题 Which three are valid on line 12?()
单项选择题 Giventhefollowingsixmethodnames:(1)addListener(2)addMouseListener(3)setMouseListener(4)deleteMouseListener(5)removeMouseListener(6)registerMouseListenerHowmanyofthesemethodnamesfollowJavaBeanListenernamingrules?()
多项选择题 Which two methods, inserted independently at line 17, correctly complete the Sales class?()