Notebook.java

import java.util.*; 

public class Notebook {
    private static int idCounter = 1;
    private int notebookId;
    private String name;
    private List<Note> notes;

    public Notebook(String name) {
        this.notebookId = idCounter++;
        this.name = name;
        this.notes = new ArrayList<>();
    }

    public void addNote(Note note) {
        notes.add(note);
    }

    public void removeNote(int noteId) {
        notes.removeIf(n -> n.getNoteId() == noteId);
    }
public int getNotebookId() {
    
    return notebookId;
}
    public List<Note> getNotes() {
        return notes;
    }

    public String getName() {
        return name;
    }

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