java - Java中的嵌套包

Question

Java 允许嵌套包吗？如果允许，为什么外部类不能是私有(private)的？私有(private)外部类的范围将在该内部包内，默认修饰符的范围将在外部包内？

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{ // Outer Package

// Scope of default Access Modifier


    {  // Inner Package

       // Scope of private class

        private class Abc{



        }


        class Bcd{

        }

    }

}

Answer 1

根据the doc ，这是不可能的:

The package statement (for example, package graphics;) must be the first line in the source file. There can be only one package statement in each source file, and it applies to all types in the file.