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Thread: Java Software Solutions Graphics Example 2.10

  1. #1
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    Default Java Software Solutions Graphics Example 2.10

    Hey guys quick question working on a graphics example in my Java book can not get this to run. Can you please take a look and get back to me with it is wrong.

    package Einstein;

    class Einstein;
    .................................................. ...............

    package einstein;

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

    public class Einstein extends JApplet
    {
    public void paint(Graphics page)
    {
    page.drawRect(50,50,40,40);
    page.drawRect(60,80,225,30);
    page.drawOval(75,65,20,20);
    page.drawLine(35,60,100,120);

    page.drawString("Out of Clutter, Find Simplicity." , 100,70);
    page.drawString("-- Alber Einstein --", 130,100);
    }
    }


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    Super Moderator Sean4u's Avatar
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    Default Re: Java Software Solutions Graphics Example 2.10

    can not get this to run
    What happens when you try to run it?

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    Default Re: Java Software Solutions Graphics Example 2.10

    When trying to run it on Netbeans it gave an error of not having a main class? So I tryed it in eclipse and it did run. Not really sure y it dident work on netbeans any ideas?

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    Default Re: Java Software Solutions Graphics Example 2.10

    Quote Originally Posted by erosgol View Post
    When trying to run it on Netbeans it gave an error of not having a main class? So I tryed it in eclipse and it did run. Not really sure y it dident work on netbeans any ideas?
    Applets do not have a main method. There is probably a way in your IDE to define whether to run it as an applet - which I presume you wish to run this as - or an application (I don't use Netbeans so cannot make any suggestions other than this)

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    Default Re: Java Software Solutions Graphics Example 2.10

    ok so they example above came from my friends java book. I have the newer book and it shows the example like this


    package Einstein;

    class Einstein;
    .................................................. ...............

    //package einstein; <----- lists no package

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

    Einstein JApplet <---- has not public class extends
    {
    paint(Graphics page) <---- has no public void
    {
    page.drawRect(50,50,40,40);
    page.drawRect(60,80,225,30);
    page.drawOval(75,65,20,20);
    page.drawLine(35,60,100,120);

    page.drawString("Out of Clutter, Find Simplicity." , 100,70);
    page.drawString("-- Alber Einstein --", 130,100);
    }
    }

    not really sure why id think it was a typo if not for the fact its in both of the examples ive looked at can some 1 explain this?

  6. #6
    Crazy Cat Lady KevinWorkman's Avatar
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    Default Re: Java Software Solutions Graphics Example 2.10

    No no no. The code you just posted is not valid- and you would know that if you had tried to run it yourself.

    You've already received the answer. Are you trying to run this as an applet or an application?
    Useful links: How to Ask Questions the Smart Way | Use Code Tags | Java Tutorials
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    Default Re: Java Software Solutions Graphics Example 2.10

    err I did try the question was, why was the newer book different and found out there was a list of corrections released and it was a mistake in the book. I am running it as an applet, and now have it working. I hope with time I can become a Great programmer like you Kevin, but till then I guess ill be posting questions that ive already received the answer to.

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