沈陽師范-Java程序設計-實驗題

....專業(yè)知識編輯整理..6080JavaclassStudent{privateStringname;privateintclassA,classB,classC;publicStudent(Stringname,intclassA,intclassB,intclassC){=name;this.classA=classA;this.classB=classB;this.classC=classC;}publicStringgetName(){returnname;}publicintgetAverage(){return(classA+classB+classC)/3;}}classUnderGraduateextendsStudent{publicUnderGraduate(Stringname,intclassA,intclassB,intclassC){super(name,classA,classB,classC);}publicvoidisPass(){if(getAverage()>=60)System.out.println(""+getName()+""+getAverage()+",elseSystem.out.println(""+getName()+""+getAverage()+",}}classGraduateextendsStudent{publicGraduate(Stringname,intclassA,intclassB,intclassC){super(name,classA,classB,classC);}publicvoidisPass(){if(getAverage()>=80)System.out.println(""+getName()+""+getAverage()+",elseSystem.out.println(""+getName()+""+getAverage()+",}}publicclassStudentDemo{publicstaticvoidmain(String[]args){UnderGraduates1=newUnderGraduate("Tom",55,75,81);Graduates2=newGraduate("Mary",72,81,68);s1.isPass();s2.isPass();}}運行結果：Tom70Mary73.Employee方式支付工資：abstractclassEmployee{privateStringname;publicEmployee(Stringname){=name;}publicStringgetName(){returnname;}publicabstractdoublecomputeSalary();}classManagerextendsEmployee{doublemonthSalary;publicManager(Stringname,doublemonthSalary){super(name);this.monthSalary=monthSalary;}publicdoublecomputeSalary(){returnmonthSalary;}}classSalesmanextendsEmployee{doublebaseSalary;doublecommision;intquantity;publicSalesman(Stringname,doublebaseSalary,doublecommision,intquantity){super(name);this.baseSalary=baseSalary;mision=commision;this.quantity=quantity;}publicdoublecomputeSalary(){returnbaseSalary+commision*quantity;}}classWorkerextendsEmployee{doubledailySalary;intdays;publicWorker(Stringname,doubledailySalary,intdays){super(name);this.dailySalary=dailySalary;this.days=days;}

publicdoublecomputeSalary(){returndays*dailySalary;}}publicclassEmployeeDemo{publicstaticvoidmain(Stringargs[]){Managerm=newManager("Tom",10000);Salesmans=newSalesman("Mary",2000,45,60);Workerw=newWorker("John",60,28);System.out.println("System.out.println("System.out.println("}}Tom+m.getName()+""+s.getName()++w.getName()+"為：+m.getName()+""+s.getName()++w.getName()+"為：10000.0"+puteSalary());"+puteSalary())；"+puteSalary());John1680.0Rectangle.javaPoint.javaC:\javaexam\test}publicintarea(){returnwidth*height;}}(2)Point.javapackagegraphics.twoD;Rectangle.javaPoint.javaC:\javaexam\test}publicintarea(){returnwidth*height;}}(2)Point.javapackagegraphics.twoD;JavaApplicationTestPackage.javamain()1Rectangle.javapackagegraphics.twoD;publicclassRectangle{publicintwidth=0;publicintheight=0;publicPointorigin;publicRectangle(Pointp,intw,inth){origin=p;width=w;height=h;}publicvoidmove(intx,inty){origin.x=x;origin.y=y;publicclassPoint{publicintx=0;publicinty=0;publicPoint(intx,inty){this.x=x;this.y=y;}3TestPackage.javaimportgraphics.twoD.*;;C:\javaexam果，并簡述打包過程。publicclassTestPackage{publicstaticvoidmain(Stringargs[]){Pointp=newPoint(2,3);Rectangler=newRectangle(p,10,10);System.out.println("Theareaoftherectangleis:"+r.area());}}javacdC:\mypkgPoint.javaCircle.javajavacdC:\mypkgPoint.javaCircle.java

javacTestPackage.javaC:\mypkgclasspathC:\javaexamC:\javaexam\testjavaTestPackageTestPackage.javaTheareaoftherectangleis：1004.AabJavaclassA{voida(){}voidb(){}privatevoidc(){}cAB3ft零b、c、d}classBextendsA{publicvoidb(){}publicvoidc(){}publicvoidd(){}}bAcprivateB5.JavaApplicationpublicclassTestException{publicstaticvoidmain(Stringargs[]){inti=0;doublenum=0;doubled[]={2.1,3.0,5.6};try{while(i<4){num+=d[i];i++;}System.out.println(“Test1”);}catch(ArrayIndexOutOfBoundsExceptione){System.out.println(“Test2”);}finally{System.out.println(“Test3”);}System.out.println(“Test4”);}}運行結果：Test2Test3Test4行結果ArithmeticException編寫程序，要求程序功能：首先輸出“這是一個異常處理的例子”，然后ArithmeticException0catchArithmeticExceptionegetMessage()publicclassExceptionExam{publicstaticvoidmain(String[]args){inta=10,b=0;doublec=0.0;System.out.println("");，孝帝翥System.out.println(a+"/"+b+"="+c);}catch(ArithmeticExceptione){System.out.println("CaughtArithmeticException:"+e.getMessage());}}}運行結果：這是一個異常處理的例子。CaughtArithmeticException:/byzeroStringStringBufferpublicclassStringDemo{publicstaticvoidmain(Stringargs[]){Strings=newString("ThisisandemooftheStringmethod.");System.out.println("Length:"+s.length());System.out.println("SubString:"+s.substring(11,15));StringBuffersb=newStringBuffer("HelloWorld!");sb.append("HelloJava!");sb.insert(12,"And");System.out.println(sb);System.out.println(sb.charAt(0));sb.setCharAt(0,'h');System.out.println(sb.charAt(0));System.out.println(sb);}}運行結果：Length：37SubString：demoHelloWorld!AndHelloJava!HhhelloWorld!AndHelloJava!JavaApplicationimportjava.io.*;publicclassReadFile{publicstaticvoidmain(String[]args)throwsIOException{BufferedReaderbr=newBufferedReader(newFileReader("ReadFile.java"));Strings=br.readLine();while(s!=null){System.out.println(s);s=br.readLine();}br.close()；}},及之$考審JavaApplicationimportjava.io.*;列J：「二”一publicclassWriteFile2{

publicstaticvoidmain(String[]args)throwsIOException{BufferedReaderbr=newBufferedReader(newInputStreamReader(System.in));BufferedWriterbw=newBufferedWriter(newFileWriter("tt.txt"));Strings=br.readLine();while(!s.equals("exit")){bw.write(s);bw.newLine();s=br.readLine();}br.close();bw.close();}}JavaApplication1：importjava.io.*;2：publicclassCopyFile{3：publicstaticvoidmain(String[]args){4：try{5：FileInputStreamfis=newFileInputStream("CopyFile.java");6：FileOutputStreamfos=newFileOutputStream("temp.txt");7：intread=fis.read();8：while(read!=-1){9：fos.write(read);10：read=fis.read();TOC\o"1-5"\h\z11：}12：fis.close();13：fos.close();14：}15：catch(IOExceptione){16：System.out.println(e);17：}18：}19：}temp.txtcopyFile.javacopytemp.txtSystem.inSystem.outimportjava.io.*;publicclassSystemStreamTest{publicstaticvoidmain(String[]args){InputStreamReaderisr=newInputStreamReader(System.in);BufferedReaderbr=newBufferedReader(isr);Strings=null;String[]ss=null;inta,b,c;System.out.println("s=br.readLine();while(!s.equals("exit")){ss=s.split(",");if(ss.length!=3)System.err.println("");else{a=Integer.parseInt(ss[0]);b=Integer.parseInt(ss[1]);c=Integer.parseInt(ss[2]);System.err.println(a,b,c);}s=br.readLine();}br.close();}JavaApplicationimportjava.io.*;publicclassFileList2{publicstaticvoidmain(String[]args){Filedir=newFile(".");Filefiles[]=dir.listFiles();System.out.println(dir);for(inti=0;i<files.length;i++){if(files[i].isFile())System.out.println("\t"+files[i].getName());elseSystem.out.println("<DIR>\t"+files[i].getName());}}}JavaApplicationclassSimpleThreadextendsTh