i'm a beginnner in java programming... plz help me out with this ERROR?

Question

i'm trying to run this program.... but the following error is coimng up! i have no idea.. plz help me out!

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

ERROR:

Exception in thread "main" java.lang.NoClassDefFoundError: Helloworld


thanks!

Answer 1

Did you compile the program before you ran it?

javac Helloworld.java

that should compile with no errors.
then type

java Helloworld

I would recomend getting Java in a Nutshell if you don't already have it. It was my best friend my first year of college.

Also java.sun.com is helpful

Answer 2

This is right answer
public class helloworld{
public static void main(String[] args)
{
System.out.println("Hello World!");
}
}

Save the source file with this name helloworld.java
After you can't get any error.

Answer 3

Did you save the file as the same name as the class name. The File name should be Helloworld.java.

In java, the filename and the class name always have to be the same. Otherwise you will get this error message that you are getting.

I am sure this will help.

Answer 4

Make the class public. Also, be sure to correct the case on the file name. I would encourage you to download Eclipse or even text pad while learning so that you don't have to deal with the command line. Both are free.

Answer 5

make sure that u spelled the class the same exact way as the file including the right caps

Answer 6

yes ! first thing save the file name with the same class name . be carefull about the alphabets . its case sensitive