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1          Static member class£¨¾²Ì¬³ÉÔ±Àࣩ
ÀàÉùÃ÷Öаüº¬“static”¹Ø¼ü×ÖµÄÄÚ²¿Àà¡£ÈçÒÔÏÂʾÀý´úÂ룬
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public class  Outer{
    //just like static method, static member class has public/private/default access privilege levels
    
    //access privilege level: public 
    public static class Inner1 {
        public Inner1() {
            //Static member inner class can access static method of outer class
            staticMethod();    
            //Compile error: static member inner class can not access instance method of outer class
            //instanceMethod();  
        }
    }
    
    //access privilege level: default 
    static class Inner2 {
        
    }
    
    //access privilege level: private 


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