學(xué)生管理系統(tǒng)Java

7.3實(shí)現(xiàn)一種簡(jiǎn)樸的學(xué)生管理系統(tǒng)，能支持學(xué)生數(shù)據(jù)(Student)的顯示、增長(zhǎng)、修改和刪除等操作，學(xué)生信息涉及學(xué)號(hào)、姓名、性別、專(zhuān)業(yè)等。具體規(guī)定如下：學(xué)生數(shù)據(jù)按對(duì)象序列化寫(xiě)入student.dat文獻(xiàn)程序啟動(dòng)后，從student.dat文獻(xiàn)讀取學(xué)生對(duì)象存入ArrayList中；增長(zhǎng)學(xué)生數(shù)據(jù)時(shí)將學(xué)生對(duì)象Student存入ArrayList,按保存后再寫(xiě)入student.dat；刪除學(xué)生必須輸入學(xué)生時(shí)學(xué)號(hào)；修改學(xué)生必須輸入學(xué)號(hào),然后輸入姓名、性別和專(zhuān)業(yè)進(jìn)行修改；保存時(shí)將目前ArrayList中的所有學(xué)生對(duì)象寫(xiě)入student.dat；退出前也要將目前ArrayList中的I所有學(xué)生對(duì)象寫(xiě)入student.dat；設(shè)計(jì)一種操作菜單，涉及“增長(zhǎng)”、“修改”、“刪除”、“顯示”、“保存”、“退出”等6個(gè)選項(xiàng)。importjava.io.FilelnputStream；importjavaJo.Fi1eOutputStream;importjava.io.0bjectinputStream;importjava,io.ObjectOutputStream;importjava.io.Seria1izable；importjava.io.File;importjava.util.ArrayList；importjava,utiI.List;importjava.util.Scanner;classStudentimplementsSeriaIizabIe{intid;Stringname；Stringsex;StringzuanYe;publicStudent(){id=0;name="wu'1；sex="男”；zuanYe="English";}pub1icStudent(intid,Stringname,Stringsex,StringzuanYe){this.id=id；=name;this.sex=sex；this,zuanYe=zuanYe；)publicvoidoutPut(){System.out.print(“學(xué)號(hào)："+id);System.out.print(",姓名:“+name);System.out.print(",性別："+sex);System.out.println(",專(zhuān)業(yè)："+zuanYe);)}publiecIassStulnfoSystem{List1ist=newArrayList();publicvoidaddList(){//將學(xué)生信息添加到ArrayList數(shù)組中去intid;Stringname,sex,zuanYe;Scannersc=newScanner(System.in);System.out.printIn("請(qǐng)輸入學(xué)生信息System.out.println(“學(xué)號(hào)：");id=sc.nextlnt();Systern.out.printIn(“姓名：")；name=sc.next()；System.out.printin("性別sex=sc.next();System.out.print1n(n專(zhuān)業(yè)：”);zuanYe=sc.next();Students=newStudent(id,name,sex,zuanYe)；//s.0utput();list.add(s);)pub1icvoidaddFi1e(){//將ArrayList數(shù)組中歐I信息保存到文獻(xiàn)try(0bjectOutputstreamf=new0bjectOutputStrearn(newFileOutputStream(Mstudent.txt"));for(intn=0；n<list,size();n++){Students=(Student)1ist.get(n)；//s.output();f.write0bject(s)；)fwriteObject(nuII)；〃寫(xiě)入null作為文獻(xiàn)結(jié)束的I標(biāo)記f.c1ose();}catch(Exceptione){System.err.println(e.getMessage());publicvoidinputList(){//將文獻(xiàn)中的1學(xué)生信息Student對(duì)象保存到ArrayList中try{FiIefile=newFile("student.txt")；if(!file.exists()){file.createNewFile()；}ObjectlnputStrearnf=newObjectInputStream(newFileInputStream(file))；Students;while(fileJength()>0&&f!=nuII&&(s=(Student)f.readObject())!=null){//s.output();〃輸出學(xué)生信息Iist.add(s);)f.c1ose()；}catch(Exceptione){System.err.println(e.getMessage())；})publicvoidoutStudent(intid){//輸出某個(gè)學(xué)生的J信息booleanm_boolean=false；for(inti0;i<1ist.size();i++){Students=(Student)Iist.get(i);for(intiif(sJd==id){s.output();m_boolean=true；break;))if(!m_boo1ean){System.out.println("沒(méi)有該同窗。");))pub1icvoidoutAI1Student(){//輸出所有學(xué)生的信息if(1ist.size()>0){for(inti=0；i<list,size()；i++)Students=(Student)1ist.get(i)；s.output();))e1se{System.out.printin("沒(méi)有任何學(xué)生信息！”);))voidchangeStudent(intid){//修改學(xué)生信息Scannersc=newScanner(System.in)；StringstuInfo=nbooleanm_boo1ean=fa1se；for(inti=0；i<Iist.size();i++){Students=(Student)1ist.get(i);if(s.id==id){System.out.println(n請(qǐng)輸入修改的J姓名:“)；if(!(stuInfo=sc.next()).trim().equa1s("")){=stuInfo;)System.out.println(“請(qǐng)輸入修改日勺性別：”)；if(!(stuInfo=sc.next()).trim().equa1s("")){s.sex=stuInfo;}System.out.printin("請(qǐng)輸入修改的J專(zhuān)業(yè)：");if(!(stuInfo=sc.next()).trim(),equaIs("H)){s.zuanYe=stuInfo；}list,set(i,s);Systern.out.println("修改成功。m_boolean=true;break;))if(!m_boolean){System.out.printIn(“沒(méi)有該同窗?！?；}voidmoveStudent(intid){//刪除某個(gè)學(xué)生信息boo1eanm_boolean=false;for(inti=0;i<list,size();i++){Students=(Student)list.get(i);if(s.id==id){list.remove(i)；("刪除成功?！?；m_boolean=true；break;}}if(!m_boolean){Systern,out.print1n("沒(méi)有該同窗?！?；))publicstaticvoidmain(Stringargs[]){intseiect,id;booleanflag=true；Stringname,zuanYe;Stringsex；Scannersc=newScanner(System.in)；StuInfoSystemt=newStuInfoSystem()；t.inputList();System.out.println("請(qǐng)選擇1-6口勺菜單");whiIe(flag){System.out.print1n(”l.增長(zhǎng)學(xué)生2.修改學(xué)生信息3.刪除學(xué)生4.查詢學(xué)生信息5.顯示所有學(xué)生信息6.保存修改7.退出系統(tǒng))try(se1ect=Integer.parselnt(sc.next());switch(select){case1：t.addList();break；case2：System,out.print1n("請(qǐng)輸入要修改學(xué)生H勺ID:")；id=sc.nextInt();t.changeStudent(id);break；case3:System.out.println(''請(qǐng)輸入要?jiǎng)h除學(xué)生的JID：")；id=sc.nextlnt();t.moveStudent(id);break;case4：System.out.println("請(qǐng)輸入要查看學(xué)生H勺ID：");id=sc.nextlnt();t.outStudent(id);break;case5：&,nbsp；t.outAllStude