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  • java内部类

     1 package com.czp;
     2 
     3 /**
     4  * 
     5  * java内部类
     6  * @author CaoZP
     7  *
     8  */
     9 public class OuterClass {
    10 
    11     /**
    12      * 
    13      * 实例内部类
    14      *
    15      */
    16     public class PublicInnerClass{
    17         
    18         void test()
    19         {
    20             System.out.println(getClass());
    21         }
    22     }
    23     
    24     /**
    25      * 静态内部类
    26      */
    27     
    28     public static class StaticInnerClass{
    29         
    30         void testX()
    31         {
    32             System.out.println(getClass());
    33         }
    34     }
    35     /**
    36      * 匿名内部类
    37      */
    38     public TestInterface test = new TestInterface() {
    39         
    40         @Override
    41         public void print(String str) {
    42             System.out.println(str);
    43         }
    44     };
    45     
    46     public static void main(String[] args) {
    47         OuterClass outerClass = new OuterClass();
    48         //PublicInnerClass的实例化依赖于外部类的实例
    49         PublicInnerClass publicInnerClass = outerClass.new PublicInnerClass();
    50         publicInnerClass.test();
    51         //静态内部类的实例化不需要外部类的实例
    52         StaticInnerClass staticInnerClass = new StaticInnerClass();
    53         staticInnerClass.testX();
    54         //匿名内部类通常作为一个外部类的成员,通过外围类的实例引用
    55         outerClass.test.print("Test");
    56     }
    57 }
    58 
    59 interface TestInterface{
    60     
    61     void print(String str);
    62 }
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  • 原文地址:https://www.cnblogs.com/czpblog/p/3139143.html
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