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Applet trouble - NoClassDefFoundError

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太阳男子
太阳男子 2020-12-18 08:01

I realize there\'s a million of these posts but none of them have helped me so here goes: I\'m trying to deploy a very, very simple applet that will not load properly. My HT

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  • 旧巷少年郎
    2020-12-18 08:42
    • /home/me/workspace/myProject/bin
      • applet.html
      • /home/me/workspace/myProject/bin/test
        1. SimpleApplet.class

    If the class SimpleApplet is in package test put the HTML in the parent directory (as detailed above), and use this HTML.

    <html>
<head>
    <meta http-equiv="Content-Type" content"text/html; charset=utf-8">
</head>
<body>
   <applet code = "test.SimpleApplet"
   width = "320" height = "100"></applet>
</body>
</html>

    Side tips:

    • When posting code, post the imports and package statement as well, or in other words, all of it. As it is we need to make guesses about things; but with the full code, we would not have to.
    • Don't attempt applets at this stage. You should sort out working with packages on the command line, and applets are more difficult than applications with a GUI.
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  • 时光说笑
    2020-12-18 08:58

    Judging from

    along with other attempts, including removing the ", trying absolute and all partial path names, and using .java

    You are attempting to source test/SimpleApplet.java rather than test/SimpleApplet.class. You will need to compile your SimpleApplet.java file into a SimpleApplet.class file

    Make sure that when you do, you use

    <applet code = "SimpleApplet.class"
codebase = "/test"
width = "320" height = "100"></applet>

    As /test is the codebase, rather than the package name.

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  • 刺人心
    2020-12-18 08:59

    NoClassDefFoundError: Ahmed (wrong name: intoapplet/Ahmed )

    I've been searching for a solution for 3 days .

    Your advice:

    If you have named your class 'test' Coding convention recommends it should be 'Test'.

    This helped me along with not including the package declaration in my Java class. By saving the project with the first letter of it's name as capital.(using eclipse).

    ----------------------------------Java code: --------------------------------

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

    public  class  Ahmed extends JApplet {

    private static final long serialVersionUID = 1L;

    public void paint(Graphics g){
    super.paint(g);
    g.drawString("my name is Ahmed Zaki wow this actually
    works",300,300);                     
    }
    }

    ----------------------------------HTML code----------------------------------

        <html>
    <head>
    <title>Tutorial applet</title>
    </head>
    <body>

    <Applet code="Ahmed.class"   width="400"; height="300";> 

    </Applet>
    </body>
    </html>

    -------Directory on the open-source SFTP , FTP, WebDAV and SCP client-------

    Both , class & html file , in the /public_html/ folder by using "WinSCP" which is a free and open-source SFTP, FTP, WebDAV and SCP client for Microsoft Windows. Its main function is secure file transfer between a local and a remote computer.

        example:

    directory for html file = /public_html/index.html
    directory for class file = /public_html/Ahmed.class

    example no2:

    +-- public_html
    |   +-- index.html
    |   +-- Ahmed.class
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