regarding public classes

[Saral Saxena]

Hi Folks ,
As I was going through the concept of classes in java..there I read that there should be one public class in source file ...!! My query is that it is mandatory to have only public class in the sourcefile ..what about if I kept several public classes in the sorce file and inside one public class I kept the main() method...will that case work ..!!

[Cole Terry]

No, it's not mandatory. The rule is one source file should have 0 or 1 public class, no more. Otherwise the compiler will complain.

[sudheer kiran]

There should be only one public class and any number of non public classes, and public class should match with the file name.
you can have all non public classes in a file.

[Jesper de Jong]

Saral Saxena wrote:what about if I kept several public classes in the sorce file and inside one public class I kept the main() method...will that case work ..!!

What happened when you tried it out? (Experimenting is the best way to learn new things!).

[Karthikeyan Nadanasabapathy]

The public type "Some class/interface name" must be defined in its own file error will be thrown by the compiler