Hi,

Post the error. Where is your class located? Is it in C:// drive?

hai

the error is class not found exception java.lang.class not found exception

E:\Users\ASHOKKUMAR R>"javac" "e:\Program Files\Java\HelloWorld.java"

E:\Users\ASHOKKUMAR R>"java" "e:\Program Files\Java\HelloWorld"
Exception in thread "main" java.lang.NoClassDefFoundError: e:\Program Files\Java
\HelloWorld
Caused by: java.lang.ClassNotFoundException: e:\Program Files\Java\HelloWorld
        at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
        at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
        at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320)
Could not find the main class: e:\Program Files\Java\HelloWorld.  Program will e
xit.

E:\Users\ASHOKKUMAR R>

and my code is


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

my sdk location is E:\programfiles\java\jdk1.0.6\bin

my code location is E:\programfiles\java\HelloWorld.java

my os is windows 7

Hello Ashok kumar if you are using windows7 then first set your user variable in advance system setting give the variable name- path and the variable value- C:\Program Files\Java\jdk1.6.0_23\bin; if you are install your java in C drive

after that you set your system variable in advance system setting use variable name- classpath variable value-C:\Program Files\Java\jdk1.6.0_23\jre\bin;; please give the semicolon where it is placed... after doing all this things you can run a java program using command line arguments just write java classname arguments