问答题

Whichthe threeinterfacesneedtobedeclaredinthewebapplicationdeploymentdescriptor？（）

A.HttpSessionListener
B.HttpSessionBindingListener
C.HttpSessionTimedOutListener
D.HttpSessionAttributeListener
E.HttpSessionActivationListener
F.HttpSessionPassivatedListener

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问答题

GivenawebapplicationinwhichtherequestparameterproductIDcontainsaproductidentifier.WhichtwoELexpressionsevaluatethevalueoftheproductID？（）

A.${productID}
B.${param.productID}
C.${params.productID}
D.${params.productID[1]}
E.${paramvalues.productID}
F.${paramValues.productID[0]}
G.${pageContext.request.productID}

问答题

AteamofprogrammersisreviewingaproposedAPIforanewutilityclass.Aftersomediscussion，theyrealizethattheycanreducethenumberofmethodsintheAPIwithoutlosinganyfunctionality.Iftheyimplementthenewdesign，whichtwoprincipleswilltheybepromoting？（）
A.Loosercoupling
B.Tightercoupling
C.Lowercohesion
D.Highercohesion
E.Weakerencapsulation
F.Strongerencapsulation

A.Aftersomediscussion，theyrealizethattheycanreducethenumberofmethodsintheAPIwithoutlosinganyfunctionality.Iftheyimplementthenewdesign，whichtwoprincipleswilltheybepromoting？（）
A.Loosercoupling
B.Tightercoupling
C.Lowercohesion
D.Highercohesion
E.Weakerencapsulation
F.Strongerencapsulation