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publicclassPerson{privatename;publicPerson(Stringname){this.name=name;}publicbooleanequals(Objecto){if(!oinstanceofPerson)returnfalse;Personp=(Person)o;returnp.name.equals(this.name);}}Whichistrue?()
A.CompilationfailsbecausethehashCodemethodisnotoverridden.
B.AHashSetcouldcontainmultiplePersonobjectswiththesamename.
C.AllPersonobjectswillhavethesamehashcodebecausethehashCodemethodisnotoverridden.
D.IfaHashSetcontainsmorethanonePersonobjectwithname=”Fred”，thenremovinganother person，alsowithname=”Fred”，willremovethemall.
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更多 “ publicclassPerson{privatename;publicPerson(Stringname){this.name=name;}publicbooleanequals(Objecto){if(!oinstanceofPerson)returnfalse;Personp=(Person)o;returnp.name.equals(this.name);}}Whichistrue?() A.CompilationfailsbecausethehashCodemethodisnotoverridden.B.AHashSetcouldcontainmultiplePersonobjectswiththesamename.C.AllPersonobjectswillhavethesamehashcodebecausethehashCodemethodisnotoverridden.D.IfaHashSetcontainsmorethanonePersonobjectwithname=”Fred”，thenremovinganother person，alsowithname=”Fred”，willremovethemall. ” 相关考题
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