Exception in thread "main"


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Thread: Exception in thread "main"

  1. #1
    SeanB Guest

    Exception in thread "main"


    I have just installed jdk1.4 and am getting an error when I try to compile
    a simple program. The source code is:

    /*
    this is a simple java program

    Call this file Example.java.
    */
    class Example {
    //a Java program begins with a call to main()
    public static void main(String args[]) {
    System.out.println("Java drives the web");
    }
    }

    The error Im getting is

    Exception in thread "main" java.lang.NoClassDefFoundError: c:\jbg\Example

    I get this error when I try to run the program. The program does compile.

    Thanks for the help in advance

    Sean
    sbradley05@snet.net

  2. #2
    Hiranya Samarasekera Guest

    Re: Exception in thread "main"


    if your compiled class file is in this directory [c:\jbg\Example\], include
    the folowing code to your autoexec.bat or just give this command on the prompt.

    set classpath=.;c:\jbg\Example

    try running it now.

    bye,
    Hiranya Samarasekera

    ----------------------------------------

    "SeanB" <sbradley05@snet.net> wrote:
    >
    >I have just installed jdk1.4 and am getting an error when I try to compile
    >a simple program. The source code is:
    >
    >/*
    >this is a simple java program
    >
    >Call this file Example.java.
    >*/
    >class Example {
    >//a Java program begins with a call to main()
    >public static void main(String args[]) {
    > System.out.println("Java drives the web");
    > }
    >}
    >
    >The error Im getting is
    >
    >Exception in thread "main" java.lang.NoClassDefFoundError: c:\jbg\Example
    >
    >I get this error when I try to run the program. The program does compile.
    >
    >Thanks for the help in advance
    >
    >Sean
    >sbradley05@snet.net



  3. #3
    Volker Held Guest

    Re: Exception in thread "main"

    this will also happen if you try to run the class file with itīs
    extension - in this case "java c:\jbg\Example.class" - to compile it you
    need the file extension, to run it you donīt...

    Volker

    Hiranya Samarasekera wrote:
    > if your compiled class file is in this directory [c:\jbg\Example\], include
    > the folowing code to your autoexec.bat or just give this command on the prompt.
    >
    > set classpath=.;c:\jbg\Example
    >
    > try running it now.
    >
    > bye,
    > Hiranya Samarasekera
    >
    > ----------------------------------------
    >
    > "SeanB" <sbradley05@snet.net> wrote:
    >
    >>I have just installed jdk1.4 and am getting an error when I try to compile
    >>a simple program. The source code is:
    >>
    >>/*
    >>this is a simple java program
    >>
    >>Call this file Example.java.
    >>*/
    >>class Example {
    >>//a Java program begins with a call to main()
    >>public static void main(String args[]) {
    >> System.out.println("Java drives the web");
    >> }
    >>}
    >>
    >>The error Im getting is
    >>
    >>Exception in thread "main" java.lang.NoClassDefFoundError: c:\jbg\Example
    >>
    >>I get this error when I try to run the program. The program does compile.
    >>
    >>Thanks for the help in advance
    >>
    >>Sean
    >>sbradley05@snet.net

    >
    >




  4. #4
    Join Date
    Apr 2007
    Posts
    11
    Attach software www.cajoon.com to your Java environment (J2SE, J2EE) and get 'root-cause' for every exception . . .

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