题目内容

有一个接口定义如下，下列选项中实现了该接口并且不是抽象的是 interface A { int method1 (int i); int method2 (int j); }

A. class B implements A { int method1(){} int method2(){} }
B. class B { int method1(int i){} int method2(int j){} }
C. class B implements A { int method1(int 1){} int method2(int j){} }
D. class B extends A { int method1(int i){} int method2(int j){} }

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