Java file name

[Vejaykrishna Venkatesan]

Hi,

In K&B book its given that the file name can be any name with no matches on the class name if the classes are not declared public but i tried one example the file gets compiled but at run time i am getting error java.lang.NoClassDefFoundError. I have attached the code here.

class Test
{
public static void main(String ar[])
{
System.out.println("Welcome to SCJP");
}
}

file name is Name.java. I dont know where i made mistake. Kindly rectify my mistake.

[Keith Lynn]

You can name the file anything you want as long as there is no public top-level class in the source file. But the .class files that are created will match the names of the classes in the source file.

[ March 07, 2006: Message edited by: Keith Lynn ]
[ March 07, 2006: Message edited by: Keith Lynn ]

[swarupa patil]

Hi Vejaykrishna
You are compiling file Name.java and java compiler gerates the Test.class and Name.class files so when u run the java program using Name class it shows NosuchMethodError because it doesnot have main method and u r trying on Name class ,Try to run program using java Test

[Vejaykrishna Venkatesan]

Thanks swarupa patil & Keith Lynn Now i got it.

[sreedhar lak]

Hi Swarupa,

"You are compiling file Name.java and java compiler gerates the Test.class and Name.class files so when u run the java program using Name class it shows NosuchMethodError because it doesnot have main method and u r trying on Name class ,Try to run program using java Test"

Are you sure? If we compile file Name.java and java compiler generates the
"Test.class and Name.class" for the above code.
According to me it generates only one class file with name Test.class.

Correct me if i am wrong

Thanks a lot

[sreedhar lak]

Hi Swarupa,
Are U sure ?I think it will creates only one class i.e Test.class.
Thanks a lot

[Vejaykrishna Venkatesan]

Dear sreedhar,

I think u r bit confused. Try compiling the prg it creates Name.class and Test.class.

[swarupa patil]

Hi sreedhar
You are correct it creates only one class
but if give both class defination of Name and Test
then only it genrates two classes .

[Vejaykrishna Venkatesan]

Hi sreedhar,

U r correct. i made mistake.

[Mark Spritzler]

"Vejaykrishna"

Please click the My Profile link above to meet JavaRanch's naming policy of using your real first and real last names, in which there is a space between the two names too.

Thanks

Mark

[Mushkan Desai]

ya it gives just one class file Test.class but can u tele me how to run this one. it also gives NoClassDefFoundError if v try to run tht class file.can u please tell me how to solve this error now.

[Vejaykrishna Venkatesan]

Originally posted by Mark Spritzler:
"Vejaykrishna"

Please click the My Profile link above to meet JavaRanch's naming policy of using your real first and real last names, in which there is a space between the two names too.

Thanks

Mark

Thanks Mr. Mark. I dont know where to go and see the naming rules. But, vejaykrishna is one name and venkatesan is my last name.

[Mark Spritzler]

At the top of this forum under the Post a Reply or Post new message buttons there is a My Profile link, click that and under the field where it says display name, just add a space to the end of what you currently have and add your last name.

Thanks

Mark