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单项选择题 public class Test {  public enum Dogs {collie, harrier};  public static void main(String [] args) {  Dogs myDog = Dogs.collie;  switch (myDog) {  case collie:  System.out.print(”collie “); case harrier:  System.out.print(”harrier “);  }  }  }  What is the result?() 

A、 collie

B、 harrier

C、 Compilation fails.

D、 collie harrier

E、 An exception is thrown at runtime.

  • D
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