天學會基礎實例200題-java

一 單選 classmyClassextentdsclassmyExceptionextendsclassmyExceptionextendsclassmyExceptionextends如下那種Java的控件將不會動作事件 ActionListenerMouseMotionListenerItemListener接7java的面修改為將來的活動預先做準StringA="abcdefg";IntegerJ=newInteger(27);IntegerJ=newJ--Itempublic staticintarr[]=newint[10];publicstaticvoidmain(Stringa[]){}}publicclasspublicstaticvoidmain(Stringargs[]){Stringstr=newString("World");charSystem.out.println(str+"and"+}publicstaticvoidchange(Stringstr,charch[]){str="Changed";ch[0]='C';}}WorldandWorldandChangedandChangedandChoice下拉式列表ItemB.CheckboxjavaJavaApplicationFrame的缺省布局FlowLayoutBorderLayoutGridLayoutCardLayoutJavaJavaJava運行時系統(tǒng)負責拋出的一系列例外。本章例程中所提到的許多例外就是Java運行時例外（詳見例8.2等。請詳細閱讀例程，選擇}publicclassAggpublicstaticvoidmain(String{Agga=newAgg();}publicvoidgo()DSRossds1=newDSRoss("one");}}classDSRossextends{privateStringsTname="";DSRoss(Strings){sTname=}publicvoid{notwait();}publicvoidnotwait()while(true)try}catch(InterruptedExceptionie)}}}}對java中的Button類按鈕對象進行鼠標點擊事件編程，該事件器程序應實現(xiàn)如下x1y2z3y+=z--/++x-x 在Java語言中，類Student是類 的子類，Student的構造方法中有一句"super()"，調用類中定義的super()方doublemyresult=Math.sqrt(1000)；layout(LayoutManager 與Chinese，Chinese試圖繼承 classChinese classChinese classChinese classChinese publicclassMyClass{staticintpublicstaticvoidmain(String}}B.Erroranarisreferencedbeforeitis ErrorsizeofarraymustbepublicclassQ{publicstaticvoidmain(stringargv[]){intanar[]=new}}1Erroranarisreferencedbeforeitis2ErrorsizeofarraymustbepublicclassQpublicstaticvoidmain(Stringargv[]){intanar[]=newint[5];}}Error:anarisreferencedbeforeitisinitialized inti=1;}one,one,two,Stringtemp[]=newString{"j""a"Stringtemp[]={"j""b"Stringtemp={"a""b"Stringtemp[]={"a","b"JavaButton類對象的事件，以下各項中，哪個是可以處理這個事件的接二 多選給定下列代碼：publicvoid {oneMethod();}catch(ArrayIndexOutOfBoundsException{System.out.println("condition}catch(Exception{System.out.println("condition}{}}conditionconditioncondition1{success=if(success==-1)thrownew TimedOutException不是一個RuntimeException。下面的哪些可以被加入第一行完成此方法的？publicvoidpublicvoidmethod()throwspublicvoidmethod()throwspublicvoidmethod()throwpublicthrowTimedOutExceptionvoidthrow相關exceptionC.throws相關exception執(zhí)行下列代碼后,哪個結論是正確的String[]s=newString[10];As[10]為""; Bs[9]為null;Cs[0]Ds.lengthStrings="你好";inti=3Strings="你好";inti=3if(i==sStrings="你好";inti=3Strings="你好";inti=3Strings=null;int 哪個布局管理器使用的是組件的最佳尺寸（preferred B D 下列哪個方法可用于創(chuàng)建一個可運行的類publicclassXimplementsRunable{publicvoid }publicclassXimplementsThread{publicvoid }publicclassXimplementsThread{publicint }publicclassXimplementsRunable{protectedvoid }publicclassXextendsThread{publicvoid }下面哪個方法可以在任何時候被任何線程調用ABCDEF BufferedInputStreamB FileInputStream FileOuterStream doublea=1.0; bytea=340; Bytea=120; privateclassMyClassextendsclassMyClassextendspublicclasspublicclassMyClassextends/*///**Rempublicintadd(intpublicvoidadd(longpublicvoidadd(inta,intpublicvoidadd(floatexample(){}catch(SafeException{System.out.println("TestSystem.out.println("Test} Test TestTest Test int[]a[]=newpublicclassargs[]){Outer:for(inti=0;i<3;i++)j=0;j<3;j++){if(j>1)}}}A0andB0andC0andD0andE2andF2andG2and下面哪些語句能夠正確地生成5個空字符串Stringa[]=newString[5];for(intStringStringString[]a=newString[5];for(intimportjava.awt.*;packageMypackage;classMyclass{}importjava.awt.*;class/*Thisisacomment*/packageMyPackage;importjava.awt.*;class關于Java語言闡述不正確的下列的變量定義中，正確的是int B.intC.staticint D.int以下的變量定義語句中，不合法的是float$_*5=byteb1=doublea=D_abc_=以下字符常量中合法的是A|BCnD我若以下變量均已正確定義并賦值，下面不符合Java語言語法的語句是b=a!=7 B.a=7+b+C.i=12.3*% D.a=a+7=c+ goto if(i){}booleanb2=true;if(b==b2){System.out.println("So}inti=1;intj=2; inti=1;intif(i==1&|j==2) AnAdapter0aa=newAnAdapter0(){}C.AnAdapter1aa=newAnAdapter1(){}E.AnInterfaceai=newAnInterface(5){}importjava.awt.*;classMyclass{}importjava.awt.*;classMyClass{}/*Thisisacomment*/packageMyPackage;importjava.awt.*;classMyClass{}Strings="Example";Whicharelegals>>>=s[3]=inti=Stringt="For"+s=s+Strings="o";Whicharelegalcode?s>>=charc=s+=inti=s=s+(->>>System.out.println21);將輸出System.out.println(1<<<2);willoutputthenumberpublicclasspublicstaticvoidmain(Stringargv[]){inti;intouter:for(i=1;i<3;i++)inner:for(j=1;j<3;j++){ifcontinueSystem.out.println("Valuefori="+i+"Valueforj="}}}Valuefori=1valueforValuefori=2valueforValuefori=2valueforValuefori=3valueforclasspublicvoidamethod(inti){}publicclassScopeextendspublicstaticvoidmain(String//MethodHere(選擇項位置}voidamethod(inti)throwsExceptionvoidamethod(longi)throwsExceptionvoidamethod(longpublicvoidamethod(inti)throwsException三 程序解析題（5道publicclassstaticintarr[]=newint[10];publicstaticvoidmain(Stringa[]){}}publicvoidmodify()intI,j,I=while(I>0)j=I*System.out.println("Thevalueofjis"+jk=k+I--}10) line line line linepublicclasspublicstaticvoidmain(Stringargs[]){Strings="ABCD";}} 運行下列程序,publicclassXextendsThreadimplementsRunable{publicvoidrun(){System.out.println("thisisrun()");}publicstaticvoidmain(Stringargs[]){Threadt=newThread(newX());t.start();}}publicclasspublicstaticvoidargs[]){Exampleex=newExample();System.out.print(ex.str+"and");}publicvoidchange(Stringstr,charch[]){str="testok";}} goodandBgoodand testokandDtestokandclasspublicstaticvoidmain(Stringargs[]){byteb=127;bytec=126;byted=b-c;}}Integerten=newInteger(10);Longnine=newLong(9);inti=1;System.out.println(i+先輸出19后輸出先輸出19后輸出Error:先輸出10后輸出intiBegin=1;chariEnd=3;ABCDerror:沒有匹配的方法 publicclassHoltextendspublicstaticvoidargv[]){Holth=newHolt();}sThreadName=}getThreadName(){return}publicvoidHolt=newHolt("Holtsecond=newHolt("second");}publicvoidstart(){for(inti=0;i<2;i++){+i);}}}}AB輸出0,second0,0,C輸出0,1,second0,D四 程序填空publicclassLin{publicstaticvoidmain(Stringargv[]){Linl=newLin();}publicamethod(){intia[]=newint[4];{

//StartFor}}}答案：for(inti=0i<publicclasspublicstaticvoidmain(Stringargv[]){Octo=newOct();}amethod(){intoi=}}publicclasspublicstaticvoidmain(Stringargs[]){Integerb=newInteger(10);Add(b);}b){intI=Value();b=new}}classpublicstaticvoidmain(Stringargs[]){try{returne){}}}classpublicstat