publicclassDrinkimplementsComparable{publicStringname；publicintcompareTo（Objecto）{return0；}}and：Drinkone=newDrink（）；Drinktwo=newDrink（）；one.name=Coffee”；two.name=Tea”；TreeSetset=newTreeSet（）；set.add（one）；set.add（two）；AprogrammeriteratesovertheTreeSetandpr

题目

publicclassDrinkimplementsComparable{publicStringname；publicintcompareTo（Objecto）{return0；}}and：Drinkone=newDrink（）；Drinktwo=newDrink（）；one.name=Coffee”；two.name=Tea”；TreeSetset=newTreeSet（）；set.add（one）；set.add（two）；AprogrammeriteratesovertheTreeSetandprintsthenameofeachDrinkobject.Whatistheresult？（）

A.Tea

B.Coffee

C.CoffeeTea

D.Compilationfails.

E.Thecoderunswithnooutput.

F.Anexceptionisthrownatruntime.

相似考题

1.AprogrammerisdevelopingaclassKey,thatwillbeusedasakeyinastandardjava.util.HashMap.WhichtwomethodsshouldbeoverriddentoassurethatKeyworkscorrectlyasakey?()A.publicinthashCode（）B.publicvoidhashCode（）C.publicintcompareTo（Objecto）D.publicbooleanequals（Objecto）E.publicbooleancompareTo（Keyk）

2.现有:classA{publicStringname="a"}classBextendsA{publicStringname="b"}执行如下代码后的结果是哪项?()Aa=newB();System.out.println(a.name);A.aB.bC.编译失败D.运行时抛出异常

3.publicclassKey{privatelongid1；privatelong1d2；//classKeymethods}AprogrammerisdevelopingaclassKey，thatwillbeusedasakeyinastandard java.util.HashMap.WhichtwomethodsshouldbeoverriddentoassurethatKeyworkscorrectlyasakey？（）A.publicinthashCode（）B.publicbooleanequals（Keyk）C.publicintcompareTo（Objecto）D.publicbooleanequals（Objecto）E.publicbooleancompareTo（Keyk）

4.package test;class Target{public String name="hello";}What can directly access and change the value of the variable name?()A.any classB.only the Target classC.any class in the test packageD.any class that extends Target

更多“publicclassDrinkimplementsComparable{publicStringname;publicintcompareTo(Objecto){return0; ”相关问题

  • 第1题：

    publicclassScoreimplementsComparable{privateintwins，losses；publicScore（intw，int1）{wins=w；losses=1；}publicintgetWins（）{returnwins；}publicintgetLosses（）{returnlosses；}publicStringtoString（）{return<+wins+，+losses+>”；}//insertcodehere}Whichmethodwillcompletethisclass？（）

    A.publicintcompareTo（Objecto）{/*modecodehere*/}

    B.publicintcompareTo（Scoreother）{/*morecodehere*/}

    C.publicintcompare（Scores1，Scores2）{/*morecodehere*/}

    D.publicintcompare（Objecto1，Objecto2）{/*morecodehere*/}


    参考答案：B

  • 第2题：

    Given:AprogrammerisdevelopingaclassKey,thatwillbeusedasakeyinastandardjava.util.HashMap.WhichtwomethodsshouldbeoverriddentoassurethatKeyworkscorrectlyasakey?()

    A.publicinthashCode（）

    B.publicbooleanequals（Keyk）

    C.publicintcompareTo（Objecto）

    D.publicbooleanequals（Objecto）

    E.publicbooleancompareTo（Keyk）


    参考答案：A, D

  • 第3题：

    向ArrayList对象里添加一个元素的方法是

    A．set(Object o)

    B．add(Object o)

    C．setObject(Object o)

    D．addObject(Object o)


    add(Object o)

  • 第4题：

    Given:Which method will complete this class?()

    A.public int compareTo(Object o){/*more code here*/}

    B.public int compareTo(Score other){/*more code here*/}

    C.public int compare(Score s1,Score s2){/*more code here*/}

    D.public int compare(Object o1,Object o2){/*more code here*/}


    参考答案：B

  • 第5题：

    在JAVA中,LinkedList类和ArrayList类同属于集合框架类,下列( )选项中的方法是LinkedList类有而ArrayList类没有的。

    A、add(Objecto)

    B、add(intindex,Objecto)

    C、remove(Objecto)

    D、removeLast()


    正确答案：D

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