单项选择题

A.for(Integeri:al)
B.for(i:al)
C.for(al)
D.forEach(Integeri:al)
相关考题

未知题型 对于5G的eMBB业务场景,要求5G网络达到()的峰值速率。

单项选择题 1.abstractclassColor2{2.//insertcodehere3.}4.5.publicclassBlue2extendsColor2{6.publicStringgetRGB(){return"blue";}7.}和4个声明:publicabstractStringgetRGB();abstractStringgetRGB();privateabstractStringgetRGB();protectedabstractStringgetRGB();分别插入到第2行,有多少行可以编译?()A.0B.1C.2D.3

未知题型 传感器业务对以下哪个指标要求比较高?()

单项选择题 importjava.util.*;classBanana3{publicstaticvoidmain(String[]args){intx=2;Banana3b=newBanana3();b.go(x);}static{x+=x;}voidgo(intx){++x;System.out.println(x);}}结果为:()

单项选择题 现有如下五个声明:inta_really_really_really_long_variable_name=5;int_hi=6;intbig=Integer.getInteger("7");int$dollars=8;int%percent=9;有几个可以通过编译?()

单项选择题 5.classPasser3{6.finalstaticPasser3p2=newPasser3();7.publicstaticvoidmain(String[]args){8.Passer3p4=p2.go(p2);9.Passer3p3=p2;10.System.out.print(p3==p4);11.}12.Passer3go(Passer3p){13.p=newPasser3();14.returnp;15.}16.}结果为:()A.trueB.falseC.第8行出现一个错误,编译失败D.第9行出现一个错误,编译失败

单项选择题 classFlibitz{publicstaticvoidmain(String[]args){intgrop=7;newFlibitz().go(grop);System.out.print(grop);}voidgo(intgrop){if(++grop〉7)grop++;System.out.print(grop);}}结果为:()

单项选择题 classWrench2{intsize;publicstaticvoidmain(String[]args){Wrench2w=newWrench2();w.size=9;Wrench2w2=go(w,w.size);System.out.print(w2.size);}staticWrench2go(Wrench2wr,ints){s=7;returnwr;}}结果为:()

单项选择题 classTest4{publicstaticvoidmain(String[]args){booleanx=true;booleany=false;shortz=42;if((z++==42)&&(y=true))z++;if((x=false)||(++z==45))z++;System.out.println("z="+z);}}结果为:()

单项选择题 classTestApp{publicstaticvoidmain(String[]args){intx=5;switch(x){case1:case2:case3:System.out.println(一季度”);break;case4:case5:case6:System.out.println(二季度”);case7:case8:case9:System.out.println(三季度”);break;ase10:case11:ase12:System.out.println(四季度”);break;default:System.out.println(不是有效的月份”);}}}上述程序运行后的结果是哪项?()A.一季度B.二季度C.三季度D.四季度

单项选择题 InputStream对象的方法read(byte[]buffer,intoffset,intlength)的返回值的含义是哪项?()

单项选择题 1.classOver{2.intdoIt(longx){return3;}3.}4.5.classUnderextendsOver{6.//insertcodehere7.}和四个方法:shortdoIt(inty){return4;}intdoIt(longx,longy){return4;}privateintdoIt(Shorty){return4;}protectedintdoIt(longx){return4;}分别插入到第6行,有几个可以通过编译?()A.2B.3C.4D.0E.1

单项选择题 Youarebuildingawebapplicationthatwillbe&en

单项选择题 Thesl:shoppingListandsl:itemtagsoutputashoppinglisttotheresponseandareusedasfollows:11.<sl:shoppingList>12.<sl:itemname="Bread"/>13.<sl:itemname="Milk"/>14.<sl:itemname="Eggs"/>15.</sl:shoppingList>Thetaghandlerforsl:shoppingListisShoppingListTagandthetaghandlerforsl:itemisItemSimpleTag.ShoppingListTagextendsBodyTagSupportandItemSimpleTagextendsSimpleTagSupport.Whichistrue?()A.ItemSimpleTagcanfindtheenclosinginstanceofShoppingListTagbycallinggetParent()andcastingtheresulttoShoppingListTag.B.ShoppingListTagcanfindthechildinstancesofItemSimpleTagbycallingsuper.getChildren()andcastingeachtoanItemSimpleTag.C.ItisimpossibleforItemSimpleTagandShoppingListTagtofindeachotherinataghierarchybecauseoneisaSimpletagandtheotherisaClassictag.D.ShoppingListTagcanfindthechildinstancesofItemSimpleTagbycallinggetChildren()onthePageContextandcastingeachtoanItemSimpleTag.E.ItemSimpleTagcanfindtheenclosinginstanceofShoppingListTagbycallingfindAncestorWithClass()onthePageContextandcastingtheresulttoShoppingListTag.

单项选择题 1.classA{2.publicbytefileNumber(){3.returnl;4.}5.}6.7.ClassBextendsA{8.publicshortgetNumber(){9.return2;10.}11.12.publicshortgetNumber(){13.Bb=newB();14.System.out.printIn(b.getNumber());15.}16.}Whatistheresult()?A.Compilationsucceedsandlisprinted.B.Compilationsucceedsand2printed.C.Anerroratline8causecompilationtofail.D.Anerroratline14causecomplicationtofail.E.Complicationsucceedsbutanexceptionisthrownatline14.

单项选择题 Oneoftheusecasesinyourwebapplicationusesmanysession-scopedattributes.Attheendoftheusecase,youwanttoclearoutthissetofattributesfromthesessionobject.Assumethatthisstaticvariableholdsthissetofattributenames:201.privatestaticfinalSet<String>USE_CASE_ATTRS;202.static{203.USE_CASE_ATTRS.add("customerOID");204.USE_CASE_ATTRS.add("custMgrBean");205.USE_CASE_ATTRS.add("orderOID");206.USE_CASE_ATTRS.add("orderMgrBean");207.}Whichcodesnippetdeletestheseattributesfromthesessionobject?()A.session.removeAll(USE_CASE_ATTRS);B.for(Stringattr:USE_CASE_ATTRS){session.remove(attr);}C.for(Stringattr:USE_CASE_ATTRS){session.removeAttribute(attr);}D.for(Stringattr:USE_CASE_ATTRS){session.deleteAttribute(attr);}E.session.deleteAllAttributes(USE_CASE_ATTRS);

单项选择题 1.classA{3.publicStringtoString(){4.return4”;5.}6.}7.classBextendsA{8.publicStringtoString(){9.returnsuper.toString()+3”;10.}11.}12.publicclassTest{13.publicstaticvoidmain(String[]args){14.System.out.printIn(newB());15.}16.}Whatistheresult()?A.Compilationsucceedsand4isprinted.B.Compilation……………isprinted.C.Anerroronline9causecompilationtofail.D.Anerroronline14causecompilationtofail.E.Compilationsucceedsbutanexceptionisthrownatline9.

单项选择题 1.classSuperFo{2.SuperFodoStuff(intx){3.returnnewSuperFo()4.}5.}6.7.classFooextendsSuperFo{8.//insertcodehere9.}和四个声明:FoodoStuff(intx){returnnewFoo();}FoodoStuff(intx){returnnewSuperFoo();}SuperFoodoStuff(intx){returnnewfoo();}SuperFoodoStuff(inty){returnnewSuperFoo();}分别插入到第8行,有几个可以通过编译()A.1B.2C.3D.4E.5

单项选择题 类Student中字段mark的缺省值是哪项?()ClassStudent{Stringname;intage;floatmarket;·········}

单项选择题 intx=0step1for(;x<11;x++){if(x==6){x=8breakstep1;}if(x==3){x++continue}System.out.print(x+”);}结果为:()