Re: Can't fix java.lang.ClassNotFoundException problem

From:
Fred <fred.l.kleinschmidt@boeing.com>
Newsgroups:
comp.lang.java.help
Date:
Mon, 1 Jun 2009 11:09:34 -0700 (PDT)
Message-ID:
<943a3951-0329-44cf-8fe4-7a282adcc0ac@u10g2000vbd.googlegroups.com>
On Jun 1, 10:59 am, Linux Guy <linuxguy...@gmail.com> wrote:

I'm working in Eclipse. My app runs fine within the IDE. I get the
ClassNotFoundException error when I try to run it from the command line.

My application is HelloWorld.java. It has a main and is a basic Hello
World application.

class HelloWorld {

        public static void main(String[] args) {
                System.out.println("Hello World !");

        }

}

Eclipse builds the project.

projectdir/bin has HelloWorld.class
projectdir/src has HelloWorld.java

$ java -version
java version "1.6.0_10"
Java(TM) SE Runtime Environment (build 1.6.0_10-b33)
Java HotSpot(TM) Server VM (build 11.0-b15, mixed mode)

src]$ ls
HelloWorld.java

src]$ ls ../bin
HelloWorld.class

src]$ java HelloWorld.java
Exception in thread "main" java.lang.NoClassDefFoundError: HelloWorld/jav=

a

Caused by: java.lang.ClassNotFoundException: HelloWorld.java
    <snip>
    at java.lang.ClassLoader.loadClassInternal(Unknown Source)
Could not find the main class: HelloWorld.java. Program will exit.

src]$ java -cp ../bin;. HelloWorld.java =

 

Usage: java [-options] class [args...] =

                   

<snip>
bash: class: command not found
bash: /bin: is a directory
bash: HelloWorld.java: command not found
bash: */: No such file or directory
bash: HelloWorld.java: line 7: syntax error near unexpected token `('
bash: HelloWorld.java: line 7: ` public static void main(S=

tring[]

args) {'

src]$ java -cp ../bin:. HelloWorld.java
Exception in thread "main" java.lang.NoClassDefFoundError: HelloWorld/jav=

a

Caused by: java.lang.ClassNotFoundException: HelloWorld.java
        <snip>
        at java.lang.ClassLoader.loadClassInternal(Unknown Source=

)

Could not find the main class: HelloWorld.java. Program will exit.

bin]$ java ../src/HelloWorld.java
Exception in thread "main" java.lang.NoClassDefFoundError: ///src/
HelloWorld/java
Caused by: java.lang.ClassNotFoundException: ...src.HelloWorld.java
        <snip>
        at java.lang.ClassLoader.loadClassInternal(Unknown Source=

)

Could not find the main class: ../src/HelloWorld.java. Program will ex=

it.

How do I run my java application from the command line ?

Thanks !


java HelloWorld

--
Fred K

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