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Thread: Getting a red Oval to displayed on screen

  1. #1
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    Default Getting a red Oval to displayed on screen

    Hey JPF members,

    I'm a beginner in java trying to get a Red Oval to appear on screen. I'm also using a java book but im stuck with this problem. Any solution to this problem?

    As you may know I'm trying to get a red oval to appear using my guy.java source file.

    heres my code:



    public class Guy extends java.applet.Applet {

    /** initialization method that will be called after
    * applet is loaded into the browser
    */

    public void init() {
    //
    }

    public void paint(java.awt.Graphics g){
    g.drawOval(200,200,100,100);
    g.fillOval(400, 300, 75, 288);
    g.setColor(java.awt.Color.RED);
    }
    }


  2. #2
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    Default Re: Getting a red Oval to displayed on screen

    Try making a call to super(g).

    public void paint(java.awt.Graphics g){
    super(g);
    g.drawOval(200,200,100,100);
    g.fillOval(400, 300, 75, 288);
    g.setColor(java.awt.Color.RED);
    }

    Also, don't know your whole code. Try called setVisible(true) within your guy() constructor.

  3. #3
    Administrator copeg's Avatar
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    Default Re: Getting a red Oval to displayed on screen

    Try making a call to super(g).
    No. This will not compile, I believe you mean call super.paint(g). To the original poster, is your question that the applet does not draw the circles? Are you sure? How large is your applet (if its smaller than the smallest x/y (200,200) value you will not see the graphics)

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    javapenguin (January 13th, 2011)

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    Default Re: Getting a red Oval to displayed on screen

    public class Guy extends java.applet.Applet {

    /** initialization method that will be called after
    * applet is loaded into the browser
    */

    public void init() {
    //
    }

    public void paint(java.awt.Graphics g){
    super(g);
    g.drawOval(200,200,100,100);
    g.fillOval(400, 300, 75, 288);
    g.setColor(java.awt.Color.RED);
    setVisible(true);

    So I took your advice but I get an error : Constructor call must be the first statement in a constructor. I dont understand what you mean by constructor?

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    Red face Re: Getting a red Oval to displayed on screen

    Yeah, that's what I meant.

    super.paint(g);

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    Red face Re: Getting a red Oval to displayed on screen

    Quote Originally Posted by warnexus View Post
    public class Guy extends java.applet.Applet {

    /** initialization method that will be called after
    * applet is loaded into the browser
    */

    public void init() {
    //
    }

    public void paint(java.awt.Graphics g){
    super(g);
    g.drawOval(200,200,100,100);
    g.fillOval(400, 300, 75, 288);
    g.setColor(java.awt.Color.RED);
    setVisible(true);

    So I took your advice but I get an error : Constructor call must be the first statement in a constructor. I dont understand what you mean by constructor?
    I meant super.paint(g).

    I was calling the Applet constructor with the Graphics g as a parameter.

  8. #7
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    Default Re: Getting a red Oval to displayed on screen

    All I see is a White oval and a black oval. Why is not my set color red code in effect? I want a red oval on screen

  9. #8
    Senile Half-Wit Freaky Chris's Avatar
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    Default Re: Getting a red Oval to displayed on screen

    Call setColor before you draw
    chris[at]javaprogrammingforums[dot]com

    Prifysgol Bangor University, North Wales

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    javapenguin (January 14th, 2011)

  11. #9
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    Default Re: Getting a red Oval to displayed on screen

    Thanks Chris. Apparently the book did not even told me about this. Make perfect sense nevertheless set before you draw. I will remember this! Thanks a bunch Now I can move on to chapter 3

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