Compiler error: Type mismatch when assigned interface variable to a class

I have a strange problem i don't know if i miss something. Here is my code

public interface Book{
}

public class MyBook implements Book
{
}

public static void main(String[] args)
{
   Book b = new MyBook();  // compiler error: Type mismatch ....
} 

Can somebody explains to me is th开发者_如何学JAVAis really a compiler error or just my eclipse is acting weird?

Thanks,

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Your main method is not in a class, try putting it inside a class.

Also make sure to have only one public class per Java file.

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I think after implementation of interface you can make object of class that implemented interface so make the object of class "MyBook"

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Sorry, there is another interface of exact same name that is in the imported statement that is causing the problem. Thanks.