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1、Manage接口：packageattend;publicinterfaceManage{publicbooleanlogin(Stringpass);publicbooleanenroll(Useruser);publicvoidquery();}User接口packageattend;publicinterfaceUser{publicbooleanlogin(Useruser);publicbooleanpunchIn();publicbooleanpunchOut();publicvoidqueryPunch();}Admin類packag
2、eattend;importjava.io.BufferedInputStream;importjava.io.BufferedOutputStream;importjava.io.File;importjava.io.FileInputStream;importjava.io.FileNotFoundException;importjava.io.FileOutputStream;importjava.io.IOException;importjava.io.ObjectInputStream;importjava.io.ObjectOutput
3、Stream;importjava.util.Calendar;publicclassAdminimplementsManage{privateStringpassword="admin";@Overridepublicbooleanlogin(Stringpass){if(password.equals(pass)){returntrue;}else{returnfalse;}}@Overridepublicbooleanenroll(Useruser){Filefile=newFile("D:\user.txt");ObjectOutputS
4、treamout=null;try{out=newObjectOutputStream(newBufferedOutputStream(newFileOutputStream(file)));out.writeObject(Calendar.getInstance());out.writeObject(user);returntrue;}catch(FileNotFoundExceptione){returnfalse;}catch(IOExceptione){returnfalse;}finally{if(out!=null){try{out.c
5、lose();}catch(IOExceptione){}}}}@Overridepublicvoidquery(){Filefile=newFile("D:\user.txt");ObjectInputStreamin=null;try{in=newObjectInputStream(newBufferedInputStream(newFileInputStream(file)));Staffuser=(Staff)in.readObject();System.out.println(user.getUsername()+"t"+user.g
6、etName());}catch(FileNotFoundExceptione){//TODOAuto-generatedcatchblocke.printStackTrace();}catch(IOExceptione){//TODOAuto-generatedcatchblocke.printStackTrace();}catch(ClassNotFoundExceptione){//TODOAuto-generatedcatchblocke.printStackTrace();}finally{if(in!=null){try{in.clos
7、e();}catch(IOExceptione){//TODOAuto-generatedcatchblocke.printStackTrace();}}}}}Staff類packageattend;importjava.io.BufferedInputStream;importjava.io.BufferedReader;importjava.io.BufferedWriter;importjava.io.File;importjava.io.FileNotFoundException;importjava.io.FileReader;impor
8、tjava.io.FileWriter;importjava.io.IOException;importjava.io.O
