面向对象程序设计试题.docx

得分每小题4分,错误原一、程序修改(20分)说明:描述程序中的语法错误原因并修改因和改正错误各2分。isPrime方法用于检查参数num是否是质数。publicbooleanisPrime(intnum){booleanresult=false;for(inti=2;i<num;i++){if(num%i==0)break;}if(i>=num){result=true;}returnresult;}具体类Reader实现了Readable接口interfaceReadable{voidread();}classReaderimplementsReadable{voidread(){("ICanreadit.");}}lassError03{publicstaticdoublemax(inta,doubleb){returna>b?a:b;}publicstaticdoublemax(doublea,intb){returna>b?a:b;}publicstaticvoidmain(String[]args){doublec=max(10,100);}}子类Child覆盖了父类Parent中的output方法。classParent{publicfinalvoidoutput(){("Parent");}}classChildextendsParent{publicvoidoutput(){("Child");}}lassError05{publicdoublesum(double[]array){doubleresult=0;for(doublevalue:array){result+=value;}returnresult;}publicstaticvoidmain(String[]args){double[]arr={,,,,};(sum(arr));}得分}程序填空(20分)说明:填充程序中的空白,使程序能够正确运行,每空2分。以下程序功能为输入多个班的考试成绩 ,并分别计算每个班的总成绩。;lassScore{//inputScore 方法用于输入一个班的所有成绩,参数num是班级的学生人数publicstaticdouble[]inputScore(intnum){double[]array=newdouble[num];Scannerscanner=newScanner();for(inti=0;i< (1) ;i++){ array[i]=();}returnarray;}publicstaticdoublesumScore(double[]array){doubleresult=0;for(inti=0;i<;i++){result+=array[i];}returnresult;}publicstaticvoidmain(String[]args){double[][]scores;intnumOfClass,numOfStudent;S