Simple Paint

Do you want to create something new In java.

Today We are going to learn how to recreate Paint in Java

ScreenShots :-

Lets Get Started :-

1. Create a new Eclipse project. If you don't know how you can check our last tutorial.

2. Create the Main class and a Panel class.

3. Create main method inside main and copy this code inside Main class

    JFrame frame = new JFrame("Simple Paint"); // Creating Instance of our Frame

    frame.setDefaultCloseOperation( JFrame.EXIT_ON_CLOSE ); // if we close our frame the //program will stop too

    

 Dimension windowSize =  new                       Dimension((int)Toolkit.getDefaultToolkit().getScreenSize().getWidth()-200,(int)     (Toolkit.getDefaultToolkit().getScreenSize().getHeight()-200)); // Getting Size of Computer window 

    frame.setSize(windowSize); // set frame size to computer window size

    frame.setMinimumSize(new Dimension(500,500)); // Minimum size for our window 

    frame.setLocationRelativeTo(null); // Making our frame visible at the center of the frame.

If you don't know how to create class or main method check our last tutorial

4. The Panel class(Created in 2nd Step) should extends JPanel implement MouseListener, MouseMotionListener

5. Add our Panel to The frame. At the END your main method will look like this :-

6. Add this to code to your panel constructor

setBackground(Color.WHITE); // Set background Color of Panel

    Dimension windowSize =  new Dimension(Toolkit.getDefaultToolkit().getScreenSize().width-300,Toolkit.getDefaultToolkit().getScreenSize().height-300) ; // Set the Size of our Panel this should smaller than frame size

    setPreferredSize(windowSize); // Set the Size

    addMouseListener(this); // Add a mouse Listener Should we can check if we are clicking mouse buttons

    addMouseMotionListener(this); // Add Mouse Motion Listener so we can check if  where we are clicking the mouse on

7. After implementing you will have some methods edit those as we did here

Graphics2D g; // Add this Variable for drawing

  private void setUpDrawingGraphics() // Add this method to draw with our Graphics (g variable)

  {

    g = (Graphics2D) getGraphics();

  }

  

  public void mousePressed(MouseEvent e)

  {

    int x = e.getX();

    int y = e.getY();

    

    prevX = x;

    prevY = y;

    

    setUpDrawingGraphics();

    g.drawLine(prevX, prevY, x, y);

  }

  

  public void mouseDragged(MouseEvent e) 

  {

    int x = e.getX();

    int y = e.getY();

    

    g.drawLine(prevX, prevY, x, y);

    

    prevX = x;

    prevY = y;

  }

@Override

public void mouseMoved(MouseEvent e) {} @Override public void mouseClicked(MouseEvent e) {} @Override public void mouseReleased(MouseEvent e) {}@Override public void mouseEntered(MouseEvent e) {} @Override public void mouseExited(MouseEvent e) {} // We do not need these methods but we can't delete them too

And That's it you created Paint in Java.

To Learn more about java Programming follow our blog.

 Comment What you want next.

And Sorry I was not able to post something yesterday.