Java – Unchecked converts java.io.Serializable to java.util.ArrayList

Please help, I get the following message in the following code:

listaFinal = (ArrayList<PuntoNota>) getIntent().getSerializableExtra("miLista");

AdapterDatos adapter = new AdapterDatos(this, listaFinal);

PuntoNota.java

public class PuntoNota implements Serializable{
private String punto;
private String nota;

public PuntoNota (String punto, String nota){
    this.punto = punto;
    this.nota = nota;
}

public String getPunto(){
    return punto;
}

public String getNota(){
    return nota;
}

}

Adapter data:

public AdapterDatos(Context context, ArrayList<PuntoNota> puntoNotaList) {
    this.context = context;
    this.puntoNotaList = puntoNotaList;
}

The application works fine, but I get the following message:

Unchecked cast: ‘java.io.Serializable’ to ‘java.util.ArrayList ‘ less … (Ctrl + F1).
about this code: (ArrayList ) getIntent (). getSerializableExtra (“myList”); will it be advisable to delete or hide this message?

Root cause: This is a warning from the IDE, getSerializableExtra returns Serializable, and you are trying to convert to ArrayList<PuntoNota> . If the program cannot convert it to the type you expect, it may throw a ClassCastException at runtime.

Solution: To pass a user-defined object in Android, your class should implement a Parcelable instead of a Serializable interface.

class PuntoNota implements Parcelable {
    private String punto;
    private String nota;

public PuntoNota(String punto, String nota) {
        this.punto = punto;
        this.nota = nota;
    }

protected PuntoNota(Parcel in) {
        punto = in.readString();
        nota = in.readString();
    }

public String getPunto() {
        return punto;
    }

public String getNota() {
        return nota;
    }

@Override
    public int describeContents() {
        return 0;
    }

@Override
    public void writeToParcel(Parcel dest, int flags) {
        dest.writeString(punto);
        dest.writeString(nota);
    }

public static final Creator<PuntoNota> CREATOR = new Creator<PuntoNota>() {
        @Override
        public PuntoNota createFromParcel(Parcel in) {
            return new PuntoNota(in);
        }

@Override
        public PuntoNota[] newArray(int size) {
            return new PuntoNota[size];
        }
    };
}

Sender

ArrayList<PuntoNota> myList = new ArrayList<>();
 Fill data to myList here
...
Intent intent = new Intent();
intent.putParcelableArrayListExtra("miLista", myList);

On the receiving end

ArrayList<? extends PuntoNota> listaFinal = getIntent().getParcelableArrayListExtra("miLista");