多项选择题
Which two code fragments represent these relationships？（）
A.class Widget{Sprocket s；}；class Gadget extends Widget{Spring s；}
B.class Widget{}；class Gadget extends Widget{Spring s1； Sprocket s2；}
C.class Widget{Sprocket s1； Spring s2；}；class Gadget extends Widget{}
D.class Gadget{Spring s；}；class Widget extends Gadget{Sprocket s；}
E.class Gadget{}；class Widget extends Gadget{Sprocket s1； Spring s2；}
F.class Gadget{Spring s1； Sprocket s2；}；class Widget extends Gadget{}
相关考题
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多项选择题
Which two code fragments， inserted independently at line 12， will compile？（）
A.super（name， baseSalary）；
B.this.commission=commission；
C.super（）；this.commission=commission；
D.this.commission = commission；super（）；
E.super（name， baseSalary）；this.commission=commission；
F.this.commission=commission；super（name， baseSalary）；
G.super（name， baseSalary， commission）； -
单项选择题
What statement is true？（）
A.The code will compile without changes.
B.The code will compile if public Tree（）{Plant（）；} is added to the Tree class.
C.The code will compile if public Plant（）{Tree（）；} is added to the Plant class.
D.The code will compile if public Plant（）{this（"fern"）；} is added to the Plant class.
E.The code will compile if public Plant（）{Plant（"fern"）；} is added to the Plant class. -
单项选择题
What is the result？（）
A.Line 26 prints "a" to System.out.
B.Line 26 prints "b" to System.out.
C.An exception is thrown at runtime.
D.Compilation of class A will fail due to an error in line 6.
