Java 成员内部类 静态内部类

　　

 

 

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package com.gibe;   public class Ersatz {   public static void main(String[] args) {     // 外部其他类, 使用成员内部类三种方法     Outer outer = new Outer();     outer.mm();     // 外部instance.new     Outer.Inner inner = outer.new Inner();     inner.say();     // 外部类编写对象方法, 返回Inner对象     Outer.Inner instance = outer.getInstance();     instance.say();     //     Outer.Inner vv = new Outer().new Inner();     vv.say();   } }   class Outer {   private int n = 11;   public String name = "Outer";     private void hi(Inner inner) {     System.out.println("Outer hi()");     System.out.println("inner: "+inner);   }     private static final void m() {     System.out.println("Outer static m()");   }     public final class Inner {     private double salary = 99.8;     private int n = 22;       public Inner() {       System.out.println(this);     }       public void say() {       System.out.println("n=" + n + " Outer.this.n=" + Outer.this.n);       hi(this);       m();     }   }     public Inner getInstance() {     return new Inner();   }     public void mm() {     Inner inner = new Inner();     inner.say();   } }

　　

 

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package com.gibe;   public class Ersatz {   public static void main(String[] args) {     Outer outer = new Outer(); //    outer.mm();     // 静态内部类, 可通过类名直接访问(满足访问权限)     Outer.Inner inner = new Outer.Inner();     inner.n();     // 通过Outer方法(static or non-static)     Outer.Inner inner1 = outer.getInner();     inner1.n();     Outer.Inner inner2 = Outer.getInner_();     inner2.n();   } }   class Outer {   private int n = 11;   private static String name = "Outer";     private static void m() {     System.out.println("Outer static m()");   }     static class Inner {     private static String name = "Inner";       public void n() {       System.out.println("Inner name=" + name + " Outer.name=" + Outer.name);       m();     }   }     public void mm() {     Inner inner = new Inner();     inner.n();   }     public Inner getInner() {     return new Inner();   }     public static Inner getInner_() {     return new Inner();   } }