思迁数码科技Java笔试真题

第页共页思迁数码科技Java笔试真题思迁数码科技Java笔试真题选择题1:WhichstatementsaboutJavacodesecurityarenottrue?A.Thebytecodeverifierloadsallclassesneededfortheexecutionofaprogram.B.Executingcodeisperformedbytheruntimeinterpreter.C.Atruntimethebytecodesareloaded,checkedandruninaninterpreter.D.Theclassloaderaddssecuritybyseparatingthenamespacesfortheclassesofthelocalfilesystemfromthoseimportedfromworksources.2:Whatistheresultwhenyoupileandrunthefollowingcode?publicclassTest{publicvoidmethod{for(inti=0;i<3;i++){System.out.print(i);}System.out.print(i);}}Choices:Whatistheresultwhenyoupileandrunthefollowingcode?publicclassTest{publicvoidmethod{for(inti=0;i<3;i++){System.out.print(i);}System.out.print(i);}}Choices:A.0122B.0123C.pilationerrorD.Noneofthese3:Givethefollowingcode:publicclassExle{publicstaticvoidmain(Stringargs[]){intl=0;do{System.out.println(“Doingitforlis:”+l);}while(--l》0)System.out.println(“Finish”);}}Whichwellbeoutput:Givethefollowingcode:publicclassExle{publicstaticvoidmain(Stringargs[]){intl=0;do{System.out.println(“Doingitforlis:”+l);}while(--l》0)System.out.println(“Finish”);}}Whichwellbeoutput:A.Doingitforlis3B.Doingitforlis1C.Doingitforlis2D.Doingitforlis04:Math.round(11.5)等於多少?A.11B.12C.11.5D.none5:Whatwillhappenwhenyouattempttopileandrunthefollowingcode?intOutput=10;booleanb1=false;if((b1==true)--((Output+=10)==20)){System.out.println(“Weareequal”+Output);}else{System.out.println(“Notequal!”+Output);}Choices:Whatwillhappenwhenyouattempttopileandrunthefollowingcode?intOutput=10;booleanb1=false;if((b1==true)--((Output+=10)==20)){System.out.println(“Weareequal”+Output);}else{System.out.println(“Notequal!”+Output);}Choices:A.pilationerror,attemptingtoperformbinaryparisononlogicaldatatypeB.pilationandoutputof“Weareequal10”.C.pilationandoutputof“Notequal!20”.D.pilationandoutputof“Notequal!10”.6:Whatwillhappenwhenyouattempttopileandrunthefollowingcode?(Assumethatthecodeispiledandrunwithassertionsenabled.)publicclassAssertTest{publicvoidmethodA(inti){asserti》=0:methodB;System.out.println(i);}publicvoidmethodB{System.out.println(“Thevaluemustnotbenegative”);}publicstaticvoidmain(Stringargs[]){AssertTesttest=newAssertTest;test.methodA(-10);}}Whatwillhappenwhenyouattempttopileandrunthefollowingcode?(Assumethatthecodeispiledandrunwithassertionsenabled.)publicclassAssertTest{publicvoidmethodA(inti){asserti》=0:methodB;System.out.println(i);}publicvoidmethodB{System.out.println(“Thevaluemustnotbenegative”);}publicstaticvoidmain(Stringargs[]){AssertTest