two codes there are 5 area (Stars***) I need to fill in 5 areas of ****. to run

Question

two codes

there are 5 area (Stars***) I need to fill in 5 areas of ****. to run the code

import java.awt.*;
import java.awt.event.*;

import javax.swing.*;

public class Exercise16_15_HW11 extends JFrame {
public Exercise16_15_HW10() {
    add(new RaceCar());
}

public static void main(String[] args) {
    Exercise16_15_HW10 frame = new Exercise16_15_HW10();
    frame.setTitle("Exercise16_15_HW10");
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    frame.setSize(200, 100);
    frame.setLocationRelativeTo(null);
    frame.setVisible(true);
}
}

class RaceCar extends JPanel {
private int xBase = 0;

private Timer timer = new Timer(100, ****);

public RaceCar() {
  
    timer.start();

  
    this.addMouseListener(new MouseAdapter() {
      @Override
      public void mousePressed(MouseEvent e) {
        *****
      }

      @Override
      public void mouseReleased(MouseEvent e) {
        *****
      }
    });

    this.setFocusable(true);
  
    this.addKeyListener(new KeyAdapter() {
      public void keyPressed(KeyEvent e) {
        if (e.getKeyCode() == KeyEvent.****) {
          if (timer.getDelay() > 5)
            timer.setDelay(timer.getDelay() - 5);
          }
       else if (e.getKeyCode() == KeyEvent.****)
            timer.setDelay(timer.getDelay() + 1);
        }
      });
}

class Listener implements ActionListener {
    @Override
    public void actionPerformed(ActionEvent e) {
     repaint();
    }
}

@Override
protected void paintComponent(Graphics g) {
    super.paintComponent(g);

    int yBase = getHeight();
    if (xBase > getWidth())
      xBase = -20;
    else
      xBase += 1;

  
    g.setColor(Color.BLACK);
    g.fillOval(xBase + 10, yBase - 10, 10, 10);
    g.fillOval(xBase + 30, yBase - 10, 10, 10);

  
    g.setColor(Color.GREEN);
    g.fillRect(xBase, yBase - 20, 50, 10);

  
    g.setColor(Color.RED);
    Polygon polygon = new Polygon();
    polygon.addPoint(xBase + 10, yBase - 20);
    polygon.addPoint(xBase + 20, yBase - 30);
    polygon.addPoint(xBase + 30, yBase - 30);
    polygon.addPoint(xBase + 40, yBase - 20);
    g.fillPolygon(polygon);
}
}

______________________________________

second has six areas

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

public class Exercise17_03_HW11 extends JFrame {

private JRadioButton jrbRed, jrbYellow, jrbGreen;

private ButtonGroup btg = new ButtonGroup();

private Light light = new Light();

public static void main(String[] args) {
    Exercise17_03_HW11 frame = new Exercise17_03_HW11();
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    frame.setSize(250, 170);
    frame.setLocationRelativeTo(null);
    frame.setVisible(true);
}

public Exercise17_03_HW11() {
    setTitle("Exercise17_03_HW11");

    JPanel p1 = new JPanel();
    p1.setLayout(new FlowLayout(FlowLayout.CENTER));
    p1.add(light);

    JPanel p2 = new JPanel();
    p2.setLayout(new FlowLayout());
    p2.add(jrbRed = new JRadioButton("Red"));
    p2.add(jrbYellow = new JRadioButton("Yellow"));
    p2.add(jrbGreen = new JRadioButton("Green"));

    jrbRed.setMnemonic('R');
    jrbYellow.setMnemonic('Y');
    jrbGreen.setMnemonic('G');

  
    btg.add(jrbRed);
    btg.add(jrbYellow);
    btg.add(jrbGreen);

    // Place p1 and p2 in the frame
    setLayout(new BorderLayout());
    add(p1, BorderLayout.CENTER);
    add(p2, BorderLayout.SOUTH);

  
    jrbRed.addItemListener(****);
    jrbYellow.addItemListener(****);
    jrbGreen.addItemListener(****);

    jrbGreen.setSelected(true);
    light.turnOnGreen();
}

class MyItemEventListener implements ItemListener {
  
    public void itemStateChanged(ItemEvent e) {
      if (jrbRed.isSelected()) {
        light.****;
      }
      if (jrbYellow.isSelected()) {
        light.****;
      }
      if (jrbGreen.isSelected()) {
        light.****;
      }
    }
}

class Light extends JPanel {
    private boolean red;
    private boolean yellow;
    private boolean green;

    public Light() {
    }

    public void turnOnRed() {
      red = true;
      yellow = false;
      green = false;
      repaint();
    }

    public void turnOnYellow() {
      red = false;
      yellow = true;
      green = false;
      repaint();
    }

    public void turnOnGreen() {
      red = false;
      yellow = false;
      green = true;
      repaint();
    }

    @Override
    protected void paintComponent(Graphics g) {
      super.paintComponent(g);

      if (red) {
        g.setColor(Color.red);
        g.fillOval(10, 10, 20, 20);
        g.setColor(Color.black);
        g.drawOval(10, 35, 20, 20);
        g.drawOval(10, 60, 20, 20);
        g.drawRect(5, 5, 30, 80);
      }
      else if (yellow) {
        g.setColor(Color.yellow);
        g.fillOval(10, 35, 20, 20);
        g.setColor(Color.black);
        g.drawRect(5, 5, 30, 80);
        g.drawOval(10, 10, 20, 20);
        g.drawOval(10, 60, 20, 20);
      }
      else if (green) {
        g.setColor(Color.green);
        g.fillOval(10, 60, 20, 20);
        g.setColor(Color.black);
        g.drawRect(5, 5, 30, 80);
        g.drawOval(10, 10, 20, 20);
        g.drawOval(10, 35, 20, 20);
      }
      else {
        g.setColor(Color.black);
        g.drawRect(5, 5, 30, 80);
        g.drawOval(10, 10, 20, 20);
        g.drawOval(10, 35, 20, 20);
        g.drawOval(10, 60, 20, 20);
      }
    }

    public Dimension getPreferredSize() {
      return new Dimension(40, 90);
    }
}
}

Explanation / Answer

1st program:

1 **** = new Listener()

2nd ****={

graphics g;

this.paintComponent(g);

}

3rd *** {

/*nothing happens here*/

}

4th*** KeyEvent.getkeycode();

5th *** KeyEvent.getkeylocation();

2nd program:

1st:**** :new MyItemEventListener()

2nd***:new  MyItemEventListener()

3rd***: new  MyItemEventListener()

4th***:light.turnOnRed();

5th***:light.turnOnYellow();

6th***:light.turnOnGreen();

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