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多项选择题 Given the following interface definition, which definitions are valid?()   interface I {   void setValue(int val);   int getValue();   }    DEFINITION a:   (a) class a extends I {  int value;   void setValue(int val) { value = val;  }   int getValue() {  return value;  }   }   DEFINITION b:   (b) interface b extends I {   void increment();   }   DEFINITION c:   (c) abstract class c implements I {   int getValue() {  return 0;  }  abstract void increment();   }   DEFINITION d:   (d) interface d implements I {  void increment();  }   DEFINITION e:   (e) class e implements I {  int value;   public void setValue(int val) { value = val; }  }  

A、Definition a.

B、Definition b.

C、Definition c.

D、Definition d.

E、Definition e.

  • B,C
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