I have a question for Android Intent.

ImageView likeButton;
TextView likeCountView;
ImageView hateButton;
TextView hateCountView;
CommentAdapter adapter;
Button allView;
ArrayList<CommentItems> items;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    likeButton = findViewById(R.id.likeButton);
    likeCountView = findViewById(R.id.likeCountView);

    hateButton = findViewById(R.id.hateButton);
    hateCountView = findViewById(R.id.hateCountView);

    TextView writeButton = findViewById(R.id.button_write);

    allView = findViewById(R.id.button_allView);

    ListView listView = findViewById(R.id.listView);
    items = new ArrayList<CommentItems>();
    items.add("kim78**", 5, "It's moderately interesting". I haven't seen a sleepless movie in a long time.", R.drawable.user1);
    items.add("kim78**", 5, "It's moderately interesting". I haven't seen a sleepless movie in a long time.", R.drawable.user1);
    items.add("kim78**", 5, "It's moderately interesting". I haven't seen a sleepless movie in a long time.", R.drawable.user1);
    items.add("kim78**", 5, "It's moderately interesting". I haven't seen a sleepless movie in a long time.", R.drawable.user1);
    items.add("kim78**", 5, "It's moderately interesting". I haven't seen a sleepless movie in a long time.", R.drawable.user1);
    items.add("kim78**", 5, "It's moderately interesting". I haven't seen a sleepless movie in a long time.", R.drawable.user1);
    items.add("kim78**", 5, "It's moderately interesting". I haven't seen a sleepless movie in a long time.", R.drawable.user1);
    adapter = new CommentAdapter(items);
    listView.setAdapter(adapter);

    //View all button
    allView.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            Intent intent = new Intent(getApplicationContext(), AllCommentView.class);
            intent.putExtra("items", items);
            startActivity(intent);

        }
    });

    //Create button
    writeButton.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            Intent intent = new Intent(getApplicationContext(), CommentWriteView.class);
            startActivityForResult(intent, 101);
        }
    });
    }


class CommentAdapter extends BaseAdapter {
    final ArrayList<CommentItems> items;

    CommentAdapter(ArrayList<CommentItems> items) {
        this.items = items;
    }

    @Override
    public int getCount() {
        return items.size();
    }

    @Override
    public Object getItem(int position) {
        return items.get(position);
    }

    @Override
    public long getItemId(int position) {
        return position;
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        CommentItemView view = new CommentItemView(getApplicationContext());
        CommentItems item = items.get(position);

        view.setComment(item.getComment());
        view.setId(item.getId());
        view.setProFileImage(item.redId);
        view.setRatingBar(item.rating);

        return view;
    }
    }

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    super.onActivityResult(requestCode, resultCode, data);
    if (resultCode == RESULT_OK) {
        String comment = data.getStringExtra("comment");
        int rating = Math.round(data.getFloatExtra("rating", 0.0f));
        if (comment != null) {
            items.add(new CommentItems("kim78**", rating, comment, R.drawable.user1));
            adapter.notifyDataSetChanged();

        }
    }
}

public class AllCommentView extends AppCompatActivity {
Intent intent;
ArrayList<CommentItems> items;



TextView allViewWriteButton;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_all_comment_view);

    intent = getIntent();
    items = (ArrayList<CommentItems>) intent.getSerializableExtra("items");
    ListView allViewListView = findViewById(R.id.allview_listview);
    CommentAdapter adapter = new CommentAdapter(items);
    allViewListView.setAdapter(adapter);



    allViewWriteButton = findViewById(R.id.allviewwrite_button);
    allViewWriteButton.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            Intent intent = new Intent(getApplicationContext(), CommentWriteView.class);
            startActivity(intent);
            finish();
        }
    });
}

class CommentAdapter extends BaseAdapter {
    final ArrayList<CommentItems> items;

    CommentAdapter(ArrayList<CommentItems> items) {
        this.items = items;
    }

    @Override
    public int getCount() {
        return items.size();
    }

    @Override
    public Object getItem(int position) {
        return items.get(position);
    }

    @Override
    public long getItemId(int position) {
        return position;
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        CommentItemView view = new CommentItemView(getApplicationContext());
        CommentItems item = items.get(position);

        view.setComment(item.getComment());
        view.setId(item.getId());
        view.setProFileImage(item.redId);
        view.setRatingBar(item.rating);

        return view;
    }
}
}

public class CommentWriteView extends AppCompatActivity {
EditText commentText;
RatingBar ratingBar;
Button saveButton;

String comment;
float rating;


@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_comment_write_view);

    commentText = findViewById(R.id.editText_comment);
    ratingBar = findViewById(R.id.write_ratingbar);
    saveButton = findViewById(R.id.saveButton);
    Button exitButton = findViewById(R.id.exitButton);

    saveButton.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            returnToMain();
        }
    });

    exitButton.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            finish();
        }
    });

}

public void returnToMain() {
    comment = commentText.getText().toString();
    rating = ratingBar.getRating();
    Intent intent = getIntent();
        intent.putExtra("comment", comment);
        intent.putExtra("rating", rating);
        setResult(RESULT_OK, intent);
        finish();
}
}