DataFilePelaaja.java

package hirsipuu;

import java.io.*;
import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Paths;
import java.util.Scanner;
import java.util.ArrayList;


public class DataFilePelaaja {

    static String findFromFile(String playerName) {
        try (Scanner fileReader = new Scanner(new File("playerData.txt"))) {
            while (fileReader.hasNextLine()){
                String line = fileReader.nextLine();
                String[] parts = line.split(",");
                if (parts[0].equals(playerName)) {
                    return line;
                }
            }
        } catch (Exception e) {
            System.out.println("Virhe: "+e.getMessage());
        }
        return "-1";
    }

    static void addOrReplacePlayerWriteToFile(String playerData) {
        ArrayList<String> lines = new ArrayList<>();
        try (Scanner fileReader = new Scanner(new File("playerData.txt"))) {
            while (fileReader.hasNextLine()){
                String line = fileReader.nextLine();
                lines.add(line);
            }
        } catch (Exception e) {
            System.out.println("Virhe: "+e.getMessage());
        }
        String[] playerDataParts = playerData.split(",");

        for (int i = 0;i<lines.size();i++) {
            String[] nametest = lines.get(i).split(",");
            if (nametest[0].equals(playerDataParts[0])) {
                lines.remove(i);
            }
        }
        lines.add(playerData);

        try (BufferedWriter writer = Files.newBufferedWriter(Paths.get("playerData.txt"))) {
            for (String line : lines) {
                writer.write (line);
                writer.newLine();
            }
        } catch (IOException ex) {
            System.out.println("Virhe: "+ex.getMessage());
        }

    }

    static void playerDataErase() {
        try (FileWriter fw = new FileWriter("playerData.txt",false)) {

        }catch (IOException e) {
                System.out.println("Virhe: "+e.getMessage());
        }
    }


}