Compiling two public scope java classes in a .java file

[Chinmaya Chowdary]

Hi, If I have two default scope classes like(class Test{} and class Test2{}) in a file named it with Test.java or Test2.java, it will compile and why it is not compiling two classes(public class Test{} and public class Test2{}) in a file named it with Test.java or Test2.java, will not compile. Thankyou.

[Campbell Ritchie]

Most compilers have a rule that the name of a public class and the name of the file must be the same (plus .java). You can't get two classes with different names in a file and still have the file with the same name as both. You can't have two classes with the same fully qualified name, so you need two files.
That rule only applies when the classes have public access.