读取两个文本文件并将这两个文本文件中的特定行写入第三个文件

Question

我正在创建一个医院管理系统，其中我有2个类，即Add医生和Add病人，从用户那里输入他们的详细信息，并将其存储到各自的文件中。我现在想创建一个约会类，在这个类中，我可以将具有特定ID的患者分配给从文件中读取的具有特定ID的医生。如果Java支持多重继承，这将非常容易，但是因为它不支持，所以我无法完成这项任务。

下面是我的AddDoctor课程

class AddDoctor{
    int did;
    int dage;
    long dphno;
    String dname;
    String dgender;
    String dqualification;

    InputStreamReader in = new InputStreamReader(System.in);
    BufferedReader br = new BufferedReader(in);

    void input() throws IOException{
        System.out.print("Enter Doctor's Name:");
        dname = br.readLine();

        Random rand = new Random();
        did = rand.nextInt((9999 - 100) + 1) + 10;

        System.out.print("Enter Doctor's Phone Number:");
        dphno = Long.parseLong(br.readLine());

        System.out.print("Enter Doctor's Age:");
        dage = Integer.parseInt(br.readLine());

        System.out.print("Enter Doctor's Gender:");
        dgender = br.readLine();

        System.out.print("Enter Doctor's Qualification:");
        dqualification = br.readLine();
    }

    void delete() throws FileNotFoundException, IOException{
        Scanner in = new Scanner(System.in);
        File inputFile = new File("DoctorDetails.txt");
        File tempFile = new File("myTemp.txt");

        BufferedReader reader = new BufferedReader(new FileReader(inputFile));
        BufferedWriter writer = new BufferedWriter(new FileWriter(tempFile));

        String currentLine;

        String lineToRemove;
        System.out.println("Enter the ID of the Doctor you wish to delete: ");
        lineToRemove = in.next();

        while((currentLine = reader.readLine()) != null) {
            String trimmedLine = currentLine.trim();
            if(trimmedLine.startsWith(lineToRemove)) continue;          
            writer.write((currentLine) + System.getProperty("line.separator"));
        }
        writer.close();
        reader.close();
        Files.move(tempFile.toPath(), inputFile.toPath(), StandardCopyOption.REPLACE_EXISTING);
    }

    void search() throws IOException{
        Scanner scan=new Scanner(System.in);
        System.out.println("Enter the ID of the Doctor To Search:");
        String did=scan.next();
        String line="";
        try{
            FileInputStream fin = new FileInputStream("DoctorDetails.txt");
            Scanner sc = new Scanner(fin);
            while(sc.hasNextLine()){
                line=sc.nextLine();
                if(line.startsWith(did))
                    System.out.println(line+" ");
            }
            sc.close();
        }
        catch(IOException e){
            e.printStackTrace();
        }
    }
    
    void display(){
        try{
            BufferedReader br=new BufferedReader(new FileReader("DoctorDetails.txt"));
            String s="";
            while((s=br.readLine())!=null){
                String data[]=new String[6];
                data=s.split(" ");
                for(int i=0;i<6;i++){
                    System.out.print(data[i]+"\t");
                }
                System.out.println();
            }
            br.close();
        }
        catch(Exception e){
        }
    }
};


//Class WriteD to Write Doctor Details in a text file where the details are fetched from the Class AddDoctor
class WriteD extends AddDoctor {
        void write() {
            try(FileWriter fw = new FileWriter("DoctorDetails.txt",true);
                BufferedWriter bw = new BufferedWriter(fw);
                PrintWriter out = new PrintWriter(bw))
                {
                    out.println(did + " " + dname + " " + dphno + " " + dage + " " + dgender + " " + dqualification);
                }catch(IOException e){
                e.printStackTrace();
                }
        }
    };

下面是我的AddPatient课程

package patient;

import java.io.*;
import java.util.*;
import java.nio.file.Files;
import java.nio.file.StandardCopyOption;


public class AddPatient{
    int pid;
    int page;
    long pphno;
    String pname;
    String pgender;
    String pillness;
    String padmitdate;

    InputStreamReader in = new InputStreamReader(System.in);
    BufferedReader br = new BufferedReader(in);

public  void input() throws IOException{
        System.out.print("Enter Patient's Name:");
        pname = br.readLine();

        Random rand1 = new Random();
        pid = rand1.nextInt((9999 - 100) + 1) + 10;

        System.out.print("Enter Patient's Phone Number:");
        pphno = Long.parseLong(br.readLine());

        System.out.print("Enter Patient's Age:");
        page = Integer.parseInt(br.readLine());

        System.out.print("Enter Patient's Gender:");
        pgender = br.readLine();

        System.out.print("Enter Patient's Illness:");
        pillness = br.readLine();

        System.out.print("Enter Patient's Admit Date:");
        padmitdate = br.readLine();
    }

public  void delete() throws FileNotFoundException, IOException{
        Scanner in = new Scanner(System.in);
        File inputFile = new File("PatientDetails.txt");
        File tempFile = new File("myTemp2.txt");

        BufferedReader reader = new BufferedReader(new FileReader(inputFile));
        BufferedWriter writer = new BufferedWriter(new FileWriter(tempFile));

        String currentLine;

        String lineToRemove;
        System.out.println("Enter the ID of the Patient you wish to delete: ");
        lineToRemove = in.next();

        while((currentLine = reader.readLine()) != null) {
            String trimmedLine = currentLine.trim();
            if(trimmedLine.startsWith(lineToRemove)) continue;
            writer.write((currentLine) + System.getProperty("line.separator"));
        }
        writer.close();
        reader.close();
        Files.move(tempFile.toPath(), inputFile.toPath(), StandardCopyOption.REPLACE_EXISTING);
    }

public  void search() throws IOException{
        Scanner scan=new Scanner(System.in);
        System.out.println("Enter the ID of the Patient To Search:");
        String did=scan.next();
        String line="";
        try{
            FileInputStream fin = new FileInputStream("PatientDetails.txt");
            Scanner sc = new Scanner(fin);
            while(sc.hasNextLine()){
                line=sc.nextLine();
                if(line.startsWith(did))
                    System.out.println(line);
            }
            sc.close();
        }
        catch(IOException e){
            e.printStackTrace();
        }
    }

public  void display(){
        try{
            BufferedReader br=new BufferedReader(new FileReader("PatientDetails.txt"));
            String s="";
            while((s=br.readLine())!=null){
                String data[]=new String[7];
                data=s.split(" ");
                for(int i=0;i<7;i++){
                    System.out.print(data[i]+"\t");
                }
                System.out.println();
            }
            br.close();
        }
        catch(Exception e){
        }
    }
};

Answer 1

简单的解决方案是在appointment类中使用composition创建doc和patient对象，并从用户处获取doc和patient id，或者使用objects创建一个对象并将其写入第三个文件。

如果是Id，你需要从文件中搜索信息。在新信息的情况下，您将创建医生和患者的对象。首先在文件中为它们设置权限，然后根据需要将数据存储在第三个文件中。

如果它能回答你的问题，请告诉我。