Here is my code 

```
import java.awt.*;
import javax.swing.*; 
import java.awt.Color;
import javax.swing.JPanel;

public class FirstFrame extends JFrame {

    //FirstFrame properties

    public FirstFrame(){

        setTitle ("Stacker");
        setSize (380,650);
        setDefaultCloseOperation(EXIT_ON_CLOSE);
        setVisible (true);
        setUndecorated (true);
        setResizable(false);

    }
public static void main (String[] args){
        new FirstFrame();
    }
}

```

I'm trying to remove the toolbar above because I want to put buttons in the frame that will contain exit, and play button. Hope you can help me!