Android Programming

// MainActivity.java
        Bundle bundle = new Bundle();
        User user = new User();
        user.setFirstname("John");

        bundle.putParcelable("user", Parcels.wrap(user));
        intent.putExtra(MESSAGE, bundle);

        startActivity(intent);

// DestinationActivity.java
        Bundle bundle = getIntent()
                    .getBundleExtra(MainActivity.MESSAGE);
        User user = Parcels.unwrap(bundle.getParcelable("user"));
        tvMessage.setText(user.getFirstname());

// User

@Parcel
public class User {
    private String firstname;

    public String getFirstname() {
        return firstname;
    }

    public void setFirstname(String firstname) {
        this.firstname = firstname;
    }
}