Cohesion example 2

00 Original.java

class Game {
    int ballX = 0;
    int ballY = 0;
    
    public void draw(Graphics g) {
        // draw the background
        g.setColor(new Color(178, 223, 224));
        g.fillRect(0, 0, 800, 600);
        
        // draw the ball
        g.setColor(new Color(155, 93, 169));
        g.fillOval(ballX, ballY, 8, 8);
    }
}

01 Worse.java

class Ball {
    int x = 0;
    int y = 0;
    
    public void drawBackground(Graphics g) {
        g.setColor(new Color(178, 223, 224));
        g.fillRect(0, 0, 800, 600);
    }
    
    public void drawBall(Graphics g) {
        g.setColor(new Color(155, 93, 169));
        g.fillOval(x, y, 8, 8);
    }
}

class Game {
    Ball ball = new Ball();

    public void draw(Graphics g) {
        ball.drawBackground(g);
        ball.drawBall(g);
    }
}

02 Better.java

class Ball {
    int x = 0;
    int y = 0;
    
    public void draw(Graphics g) {
        g.setColor(new Color(155, 93, 169));
        g.fillOval(x, y, 8, 8);
    }
}

class Game {
    Ball ball = new Ball();

    public void draw(Graphics g) {
        drawBackground(g);
        ball.draw(g);
    }
    
    public void drawBackground(Graphics g) {
        g.setColor(new Color(178, 223, 224));
        g.fillRect(0, 0, 800, 600);
    }
}