How to extend Actor and draw it on stage? Libgdx
<p>I am trying to make an object that extends the Actor class. but whenever I have call the Stage's draw() method, it only draws the button I added to it. Here is my code, maybe someone here can help me?</p>

<p>Code for my Screen class (Assume that I had overridden all necessary methods and that I imported all necessary classes):
public class PlayScreen implements Screen{</p>

<pre><code>SpriteBatch batch;
Game game;
Table table;
Skin skin;
Stage stage;
BitmapFont font;
TextButton button;
TextDisplay display;


public PlayScreen(MyGdxGame game, SpriteBatch batch){

    this.game = game;
    this.batch = batch;

    //instantiating Stage, Table, BitmapFont, and Skin objects.
    font = new BitmapFont(Gdx.files.internal("MyTruefont.fnt"));
    table = new Table();
    stage = new Stage();
    skin = new Skin(Gdx.files.internal("Test.json"));


    button = new TextButton("Start!", skin, "default");
    display = new TextDisplay(font, this);

    //Setting table properties
    table.setWidth(stage.getWidth());
    table.align(Align.center|Align.top);
    table.setPosition(0, Gdx.graphics.getHeight());
    table.padTop(30);

    //Adding actors to table
    table.add(button).padBottom(50);
    table.add(display);

    //Adding table to stage and setting stage as the input processor
    stage.addActor(table);
    Gdx.input.setInputProcessor(stage);
}



@Override
public void show() {

}

@Override
public void render(float delta) {

    Gdx.gl.glClearColor(1, 0, 0, 1);
    Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT);
    batch.begin();
    stage.draw();
    batch.end();
}
</code></pre>

<p>And here is My Textdisplay class that extends Actor (Again assume all other methods have been overriden, and all necessary classes have been imported):</p>

<pre><code>public class TextDisplay extends Actor implements Drawable {

    Texture texture;
    BitmapFont font;
    String str;

    public TextDisplay(BitmapFont font, Screen screen){
        this.font = font;

        texture = new Texture(Gdx.files.internal("TextArea.png"));

        str = "";

        setLeftWidth(texture.getWidth());
        setRightWidth(texture.getWidth());

        setBottomHeight(texture.getHeight());
        setTopHeight(texture.getHeight());
    }



@Override
public void draw(Batch batch, float x, float y, float width, float height) {
    batch.draw(texture, x, y);
}
</code></pre>