给定以下代码,下列哪行代码可以编译成功? interface FooI { void f(); } abstract class C implements FooI {}A.class A extends FooI { void f(); }B.interface A extends FooI { void f(); }C.class A extends C implements FooI {}D.interface A implements FooI { void f(); }
给定以下代码,下列哪行代码可以编译成功? interface FooI { void f(); } abstract class C implements FooI {}
A.class A extends FooI { void f(); }
B.interface A extends FooI { void f(); }
C.class A extends C implements FooI {}
D.interface A implements FooI { void f(); }
参考答案和解析
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