Adding multiple components to 1 single frame/panel

Title says it all i want to get these two components:

Java Code:

package TestVersion;

import java.awt.Color;
import java.awt.Dimension;
import java.awt.Graphics;

import javax.swing.JPanel;

public class GameWorld extends JPanel {
        
        private int charX = 225;
        private int charY = 225;
        private int charDiameter = 25;
        private int charDeltaX = -1;
        private int charDeltaY = 3;
        public Color playerColor = new Color(255,0,0);
        private int noseX = 236;
        private int noseY = 221;
        private int noseWidth = 4;
        private int noseHeight = 5;
        
        public void changePlayerColor(Color YELLOW){    
                    this.playerColor = YELLOW;
                    repaint();
                }

        public GameWorld() {
                   setPreferredSize(new Dimension(300, 300));
                
                }

        
                        public void paintComponent(Graphics g) {
                                super.paintComponent(g);
                                setBackground(Color.GREEN);
                                
                                g.setColor(playerColor);
                                g.fillOval(charX, charY, charDiameter, charDiameter);
                                g.fillRect(noseX, noseY, noseWidth, noseHeight);
                        }
                        public void walkCharLeft() {
                                charX-=5;
                                repaint();
                                noseX-=5;
                                
                                
                        }
                        public void walkCharRight() {
                                charX+=5;
                                noseX+=5;
                                repaint();
                        }
                        public void walkCharUp() {
                                charY-=5;
                                noseY-=5;
                                repaint();
                        }
                        public void walkCharDown() {
                                charY+=5;
                                noseY+=5;
                                repaint();
                        }
                        public void runCharLeft() {
                                charX-=10;
                                noseX-=10;
                                repaint();
                                
                        }
                        public void runCharRight() {
                                charX+=10;
                                noseX+=10;
                                repaint();
                                
                        }
                        public void runCharUp() {
                                charY-=10;
                                noseY-=10;
                                repaint();
                                
                        }
                        public void runCharDown() {
                                charY+=10;
                                noseY+=10;
                                repaint();
                                
                        }



                        public void setColor(Color color) {
                                // TODO Auto-generated method stub
                                
                        }



}

Java Code:

package TestVersion;

import java.awt.*;
import java.awt.Graphics;

import javax.swing.JPanel;

public class MatWood extends JPanel{
        
        private int woodX = 250;
        private int woodY = 100;
        private int woodWidth = 10;
        private int woodHeight = 50;
        
        public MatWood(){
                setPreferredSize(new Dimension(300, 300)); // Panel needs a size;
        }
        
        @Override
        public void paintComponent(Graphics g) {
                super.paintComponent(g);
                g.setColor(Color.BLACK);
                g.fillRect(woodX, woodY, woodWidth, woodHeight);
        }
}

To the frame/panel what this class creates:

Java Code:

package TestVersion;

import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Component;

import javax.swing.JFrame;

import TestVersion.CKeyListener;
import TestVersion.GameWorld;
import TestVersion.MatWood;

public class MYCoreWorld {
        
        
    public static void main(String[] args) {    
        
        
        JFrame frame = new JFrame("My Core 0.0.1a");
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        
        GameWorld gameWorld = new GameWorld();
        //make sure that the panel can detect keyevents
        gameWorld.setFocusable(true);
        gameWorld.setBackground(Color.GREEN);
        
        MatWood matWood = new MatWood();
        
        CKeyListener listener = new CKeyListener(gameWorld);
        gameWorld.addKeyListener(listener);
        
        frame.add(matWood, BorderLayout.SOUTH);         
        frame.add(gameWorld, BorderLayout.CENTER);
        
        frame.setBackground(Color.GREEN);
        frame.pack();
        frame.setVisible(true);
        
        //make sure the JPanel has the focus
        gameWorld.requestFocusInWindow();
        
    }
}