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Linaklm19
03.06.2025, 01:47

Verkettete Listen in Java CD?

import java.io.BufferedReader;
import java.io.FileReader;
import java.util.LinkedList;
import java.util.Random;

public class PlaylistReader {
    public static void main(String[] args) {
        LinkedList<Titel> playlist = new LinkedList<Titel>();
        BufferedReader br = null;
        
        try {
            br = new BufferedReader(new FileReader("titel.txt"));
            String name = br.readLine(); // Name der CD aus erster Zeile
            String line = "";
            while ((line = br.readLine()) != null) {
                String[] parts = line.split(";");
                int cdNr = Integer.parseInt(parts[0].replaceAll("\\D+", ""));
                int trackNr = Integer.parseInt(parts[1]);
                String interpret = parts[2];
                String title = parts[4];
                String duration = parts[5];
                
                Titel t = new Titel(cdNr, trackNr, interpret, name, title, duration);
                playlist.add(t);
            }
            br.close();
            Random rand = new Random();
            int index = rand.nextInt(playlist.size());
            Titel zufallstitel = playlist.get(index);
            System.out.println(zufallstitel.getName());
            System.out.println("CD " + zufallstitel.getCdNr());
            System.out.println("Titel Nr.: " + zufallstitel.getTrackNr());
            System.out.println("Interpret: " + zufallstitel.getInterpret());
             System.out.println("Titel: " + zufallstitel.getTitle());
            System.out.println("Spielzeit: " + zufallstitel.getDuration());
        } catch (Exception e) {
            System.out.println("Fehler beim Einlesen der Datei: " + e.getMessage());
        }
    }
}

public class Titel {
    private int cdNr;
    private String duration;
    private String interpret;
    private String name;
    private String title;
    private int trackNr;

    public Titel(int cdNr, int trackNr, String interpret, String name, String title, String duration) {
        this.cdNr = cdNr;
        this.trackNr = trackNr;
        this.interpret = interpret;
        this.name = name;
        this.title = title;
        this.duration = duration;
    }

    public int getCdNr() {
        return cdNr;
    }
    public void setCdNr(int cdNr) {
        this.cdNr = cdNr;
    }
    
    public String getDuration() {
        return duration;
    }
    
    public void setDuration(String duration) {
        this.duration = duration;
    }
    
    public String getInterpret() {
        return interpret;
    }

    public void 
        setInterpret(String interpret) {
        this.interpret = interpret;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public String getTitle() {
        return title;
    }

    public void setTitle(String title) {
        this.title = title;
    }
   
    public int getTrackNr() {
        return trackNr;
    }

    public void setTrackNr(int trackNr) {
        this.trackNr = trackNr;
    }
}
Java, Programmiersprache
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