public class ATest{

    int nonstatic_a = 3;

    static int static_b = 4;

    final int final_c = 5;

    public static void main(String[] args){

    }

    public void test01(int i){

        final int c=0;

        int d = 1;

//③local inner classes只能被定义成abstract/final的；只能访问final/static的本地变量。

//Illegal modifier for the local class InnerClass_Local; only abstract or final is permitted

        class InnerClass_Local{

            final int l= 0;

//Cannot refer to a non-final variable d inside an inner class defined in a different method

//③local inner classes只能被定义成abstract/final的；只能访问final/static的本地变量。

//            int e = d;//Compile Error!

            int e = static_b;

            int f = final_c;

//The field ll cannot be declared static;

//static fields/methods can only be declared in static or top level types

//            static int ll=2; //Compile Error!

//            static void f1(){//Compile Error!

//                System.out.print(c);

//            }

        }

    }

    void fun2(){

    }

    static class InnerClass2{

        static int ll=2;

        int aa=3;

//①static inner classes只有最上层的类或static类可以有，并且它只能访问static变量。

//        int bb = nonstatic_a; //Compile Error! 

        static class InnerClass5{

        }

    }

    class InnerClass3{

        //②member inner classes要创建它的实例，必须有一个指向上层的引用，它不能含有static方法。

        //The member type InnerClass4 cannot be declared static;

        //static types can only be declared in static or top level types

//        static class InnerClass4{//Compile Error!

//        }

        final void inner_fun(){

        }

    }

    final class InnerClass4{

        void final_fun(){

        }

    }

}