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Thread: new to forums help needed in paint program

  1. #1
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    Default new to forums help needed in paint program

    hello guys i am new to the forums and not able to rectify an error in a drawiing program that i made.
    here is the code
    import java.awt.Point;
    import java.awt.Graphics;
    import java.awt.event.MouseEvent;
    import java.awt.event.MouseMotionAdapter;
    import javax.swing.JPanel;
    public class PaintPanel extends JPanel
    {
    private int pointCount=0;
    private Point[] points=new Point[10000];
    public PaintPanel()
    {
    addMouseMotionListener (
    new MouseMotionAdapter()
    {
    public void mouseDragged( MouseEvent event)
    {
    if ( pointCount < points.length )
    {
    points[pointCount]=event.getPoint();
    pointCount++;
    repaint();
    }
    }
    }
    );
    }
    public void PaintComponent(Graphics g)
    {
    super.paintComponent(g);
    for(int i=0; i<pointCount;i++)
    g.fillOval(points[i].x,points[i].y,4,4 );
    }
    }



    and


    import java.awt.BorderLayout;
    import javax.swing.JFrame;
    import javax.swing.JLabel;
    public class Painter
    {
    public static void main(String[]args)
    {
    JFrame application = new JFrame("Paint 1.0 by Saif");
    PaintPanel paintPanel = new PaintPanel();
    application.add(paintPanel, BorderLayout.CENTER);
    application.add(new JLabel("Drag da cursor to draw"),BorderLayout.SOUTH);
    application.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    application.setSize(400,200);
    application.setVisible(true);
    }
    }
    here is the snapshot a drawing area should appear but only a window is appearing where i cant draw
    sorry "Norm"
    Capture.JPG
    Last edited by saifbaeg; May 27th, 2012 at 08:03 PM. Reason: explain error


  2. #2
    Super Moderator Norm's Avatar
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    Default Re: new to forums help needed in paint program

    not able to rectify an error
    Please explain what the error is.
    If you are getting error messages, please copy and paste here the full text.
    If you don't understand my answer, don't ignore it, ask a question.

  3. #3
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    Default Re: new to forums help needed in paint program

    any please help...

  4. #4
    Super Moderator Norm's Avatar
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    Default Re: new to forums help needed in paint program

    Your posted code does not have proper formatting making it hard to read.

    Try debugging the code by adding println statements to it to show program execution flow so you know what methods are being called and to show the values of variables as their values are changed and used.
    If you don't understand my answer, don't ignore it, ask a question.

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