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Java认证考试

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public class Person {  private name;  public Person(String name) {  this.name = name;  }  public int hashCode() {  return 420;  }  }  Which is true?() 

  • A、 The time to find the value from HashMap with a Person key depends on the size of the map.
  • B、 Deleting a Person key from a HashMap will delete all map entries for all keys of typePerson.
  • C、 Inserting a second Person object into a HashSet will cause the first Person object to beremoved as a duplicate.
  • D、 The time to determine whether a Person object is contained in a HashSet is constant and does NOT depend on the size of the map.
正确答案:A
答案解析:
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