\u663e\u7136\uff0c\u6b64\u5904\u4e0d\u80fd\u5355\u65b9\u9762\u7528\u5c5e\u6027\u6216\u8005\u65b9\u6cd5\u8868\u793a\u4e00\u4e2a\u5fc3\u810f\uff0c\u800c\u9700\u8981\u4e00\u4e2a\u7c7b\u3002<\/p>\n

\u800c\u5fc3\u810f\u53c8\u5728\u4eba\u4f53\u5f53\u4e2d\uff0c\u6b63\u5982\u540c\u662f\u5185\u90e8\u7c7b\u5728\u5916\u90e8\u5185\u5f53\u4e2d\u3002<\/p>\n

\u5b9e\u4f8b1\uff1a\u5185\u90e8\u7c7b\u7684\u57fa\u672c\u7ed3\u6784<\/strong><\/div>\n
\/\/\u5916\u90e8\u7c7b\r\nclass Out {\r\n private int age = 12;\r\n \r\n \/\/\u5185\u90e8\u7c7b\r\n class In {\r\n public void print() {\r\n System.out.println(age);\r\n }\r\n }\r\n}\r\n \r\npublic class Demo {\r\n public static void main(String[] args) {\r\n Out.In in = new Out().new In();\r\n in.print();\r\n \/\/\u6216\u8005\u91c7\u7528\u4e0b\u79cd\u65b9\u5f0f\u8bbf\u95ee\r\n \/*\r\n Out out = new Out();\r\n Out.In in = out.new In();\r\n in.print();\r\n *\/\r\n }\r\n}<\/pre>\n
\u8fd0\u884c\u7ed3\u679c\uff1a<\/p>\n
12<\/pre>\n
\u4ece\u4e0a\u9762\u7684\u4f8b\u5b50\u4e0d\u96be\u770b\u51fa\uff0c\u5185\u90e8\u7c7b\u5176\u5b9e\u4e25\u91cd\u7834\u574f\u4e86\u826f\u597d\u7684\u4ee3\u7801\u7ed3\u6784\uff0c\u4f46\u4e3a\u4ec0\u4e48\u8fd8\u8981\u4f7f\u7528\u5185\u90e8\u7c7b\u5462\uff1f<\/p>\n
\u56e0\u4e3a\u5185\u90e8\u7c7b\u53ef\u4ee5\u968f\u610f\u4f7f\u7528\u5916\u90e8\u7c7b\u7684\u6210\u5458\u53d8\u91cf\uff08\u5305\u62ec\u79c1\u6709\uff09\u800c\u4e0d\u7528\u751f\u6210\u5916\u90e8\u7c7b\u7684\u5bf9\u8c61\uff0c\u8fd9\u4e5f\u662f\u5185\u90e8\u7c7b\u7684\u552f\u4e00\u4f18\u70b9\u3002<\/p>\n
\u5982\u540c\u5fc3\u810f\u53ef\u4ee5\u76f4\u63a5\u8bbf\u95ee\u8eab\u4f53\u7684\u8840\u6db2\uff0c\u800c\u4e0d\u662f\u901a\u8fc7\u533b\u751f\u6765\u62bd\u8840\u3002<\/p>\n
\u7a0b\u5e8f\u7f16\u8bd1\u8fc7\u540e\u4f1a\u4ea7\u751f\u4e24\u4e2a .class \u6587\u4ef6\uff0c\u5206\u522b\u662f Out.class \u548c Out$In.class\u3002<\/p>\n
\u5176\u4e2d $ \u4ee3\u8868\u4e86\u4e0a\u9762\u7a0b\u5e8f\u4e2d Out.In \u4e2d\u7684\u90a3\u4e2a\u3002<\/p>\n
Out.In in = new Out().new In() \u53ef\u4ee5\u7528\u6765\u751f\u6210\u5185\u90e8\u7c7b\u7684\u5bf9\u8c61\uff0c\u8fd9\u79cd\u65b9\u6cd5\u5b58\u5728\u4e24\u4e2a\u5c0f\u77e5\u8bc6\u70b9\u9700\u8981\u6ce8\u610f\uff1a<\/p>\n
\n
\u5f00\u5934\u7684 Out \u662f\u4e3a\u4e86\u6807\u660e\u9700\u8981\u751f\u6210\u7684\u5185\u90e8\u7c7b\u5bf9\u8c61\u5728\u54ea\u4e2a\u5916\u90e8\u7c7b\u5f53\u4e2d\u3002<\/li>\n
\u5fc5\u987b\u5148\u6709\u5916\u90e8\u7c7b\u7684\u5bf9\u8c61\u624d\u80fd\u751f\u6210\u5185\u90e8\u7c7b\u7684\u5bf9\u8c61\uff0c\u56e0\u4e3a\u5185\u90e8\u7c7b\u7684\u4f5c\u7528\u5c31\u662f\u4e3a\u4e86\u8bbf\u95ee\u5916\u90e8\u7c7b\u4e2d\u7684\u6210\u5458\u53d8\u91cf\u3002<\/li>\n<\/ol>\n
class Out {\r\n private int age = 12;\r\n \r\n class In {\r\n private int age = 13;\r\n public void print() {\r\n int age = 14;\r\n System.out.println(\"\u5c40\u90e8\u53d8\u91cf\uff1a\" + age);\r\n System.out.println(\"\u5185\u90e8\u7c7b\u53d8\u91cf\uff1a\" + this.age);\r\n System.out.println(\"\u5916\u90e8\u7c7b\u53d8\u91cf\uff1a\" + Out.this.age);\r\n }\r\n }\r\n}\r\n \r\npublic class Demo {\r\n public static void main(String[] args) {\r\n Out.In in = new Out().new In();\r\n in.print();\r\n }\r\n}<\/pre>\n
\u8fd0\u884c\u7ed3\u679c\uff1a<\/p>\n
\u5c40\u90e8\u53d8\u91cf\uff1a14\r\n\u5185\u90e8\u7c7b\u53d8\u91cf\uff1a13\r\n\u5916\u90e8\u7c7b\u53d8\u91cf\uff1a12<\/pre>\n
\u4ece\u5b9e\u4f8b1\u4e2d\u53ef\u4ee5\u53d1\u73b0\uff0c\u5185\u90e8\u7c7b\u5728\u6ca1\u6709\u540c\u540d\u6210\u5458\u53d8\u91cf\u548c\u5c40\u90e8\u53d8\u91cf\u7684\u60c5\u51b5\u4e0b\uff0c\u5185\u90e8\u7c7b\u4f1a\u76f4\u63a5\u8bbf\u95ee\u5916\u90e8\u7c7b\u7684\u6210\u5458\u53d8\u91cf\uff0c\u800c\u65e0\u9700\u6307\u5b9aOut.this.\u5c5e\u6027\u540d<\/strong>\u3002<\/p>\n
\u5426\u5219\uff0c\u5185\u90e8\u7c7b\u4e2d\u7684\u5c40\u90e8\u53d8\u91cf\u4f1a\u8986\u76d6\u5916\u90e8\u7c7b\u7684\u6210\u5458\u53d8\u91cf\u3002<\/p>\n
\u800c\u8bbf\u95ee\u5185\u90e8\u7c7b\u672c\u8eab\u7684\u6210\u5458\u53d8\u91cf\u53ef\u7528 this.\u5c5e\u6027\u540d<\/strong>\uff0c\u8bbf\u95ee\u5916\u90e8\u7c7b\u7684\u6210\u5458\u53d8\u91cf\u9700\u8981\u4f7f\u7528 Out.this.\u5c5e\u6027\u540d<\/strong>\u3002<\/p>\n
\u5b9e\u4f8b2\uff1a\u9759\u6001\u5185\u90e8\u7c7b<\/strong><\/div>\n
class Out {\r\n private static int age = 12;\r\n \r\n static class In {\r\n public void print() {\r\n System.out.println(age);\r\n }\r\n }\r\n}\r\n \r\npublic class Demo {\r\n public static void main(String[] args) {\r\n Out.In in = new Out.In();\r\n in.print();\r\n }\r\n}<\/pre>\n
\u8fd0\u884c\u7ed3\u679c\uff1a<\/p>\n
12<\/pre>\n
\u53ef\u4ee5\u770b\u5230\uff0c\u5982\u679c\u7528 static \u5c06\u5185\u90e8\u5185\u9759\u6001\u5316\uff0c\u90a3\u4e48\u5185\u90e8\u7c7b\u5c31\u53ea\u80fd\u8bbf\u95ee\u5916\u90e8\u7c7b\u7684\u9759\u6001\u6210\u5458\u53d8\u91cf\uff0c\u5177\u6709\u5c40\u9650\u6027\u3002<\/p>\n
\u5176\u6b21\uff0c\u56e0\u4e3a\u5185\u90e8\u7c7b\u88ab\u9759\u6001\u5316\uff0c\u56e0\u6b64 Out.In \u53ef\u4ee5\u5f53\u505a\u4e00\u4e2a\u6574\u4f53\u770b\uff0c\u53ef\u4ee5\u76f4\u63a5 new \u51fa\u5185\u90e8\u7c7b\u7684\u5bf9\u8c61\uff08\u901a\u8fc7\u7c7b\u540d\u8bbf\u95ee static\uff0c\u751f\u4e0d\u751f\u6210\u5916\u90e8\u7c7b\u5bf9\u8c61\u90fd\u6ca1\u5173\u7cfb\uff09<\/p>\n
\u5b9e\u4f8b3\uff1a\u79c1\u6709\u5185\u90e8\u7c7b\/h3><\/strong><\/div>\n
class Out {\r\n private int age = 12;\r\n \r\n private class In {\r\n public void print() {\r\n System.out.println(age);\r\n }\r\n }\r\n public void outPrint() {\r\n new In().print();\r\n }\r\n}\r\n \r\npublic class Demo {\r\n public static void main(String[] args) {\r\n \/\/\u6b64\u65b9\u6cd5\u65e0\u6548\r\n \/*\r\n Out.In in = new Out().new In();\r\n in.print();\r\n *\/\r\n Out out = new Out();\r\n out.outPrint();\r\n }\r\n}<\/pre>\n
\u8fd0\u884c\u7ed3\u679c\uff1a<\/p>\n
12<\/pre>\n
\u5982\u679c\u4e00\u4e2a\u5185\u90e8\u7c7b\u53ea\u5e0c\u671b\u88ab\u5916\u90e8\u7c7b\u4e2d\u7684\u65b9\u6cd5\u64cd\u4f5c\uff0c\u90a3\u4e48\u53ef\u4ee5\u4f7f\u7528 private \u58f0\u660e\u5185\u90e8\u7c7b\u3002<\/p>\n
\u4e0a\u9762\u7684\u4ee3\u7801\u4e2d\uff0c\u6211\u4eec\u5fc5\u987b\u5728 Out \u7c7b\u91cc\u9762\u751f\u6210 In \u7c7b\u7684\u5bf9\u8c61\u8fdb\u884c\u64cd\u4f5c\uff0c\u800c\u65e0\u6cd5\u518d\u4f7f\u7528 Out.In in = new Out().new In() \u751f\u6210\u5185\u90e8\u7c7b\u7684\u5bf9\u8c61\u3002<\/p>\n
\u4e5f\u5c31\u662f\u8bf4\uff0c\u6b64\u65f6\u7684\u5185\u90e8\u7c7b\u53ea\u6709\u5916\u90e8\u7c7b\u53ef\u63a7\u5236\u3002<\/p>\n
\u5982\u540c\u662f\uff0c\u6211\u7684\u5fc3\u810f\u53ea\u80fd\u7531\u6211\u7684\u8eab\u4f53\u63a7\u5236\uff0c\u5176\u4ed6\u4eba\u65e0\u6cd5\u76f4\u63a5\u8bbf\u95ee\u5b83\u3002<\/p>\n
\u5b9e\u4f8b4\uff1a\u65b9\u6cd5\u5185\u90e8\u7c7b<\/strong><\/div>\n
class Out {\r\n private int age = 12;\r\n \r\n public void Print(final int x) {\r\n class In {\r\n public void inPrint() {\r\n System.out.println(x);\r\n System.out.println(age);\r\n }\r\n }\r\n new In().inPrint();\r\n }\r\n}\r\n \r\npublic class Demo {\r\n public static void main(String[] args) {\r\n Out out = new Out();\r\n out.Print(3);\r\n }\r\n}<\/pre>\n
\u8fd0\u884c\u7ed3\u679c\uff1a<\/p>\n
3\r\n12<\/pre>\n
\u5728\u4e0a\u9762\u7684\u4ee3\u7801\u4e2d\uff0c\u6211\u4eec\u5c06\u5185\u90e8\u7c7b\u79fb\u5230\u4e86\u5916\u90e8\u7c7b\u7684\u65b9\u6cd5\u4e2d\uff0c\u7136\u540e\u5728\u5916\u90e8\u7c7b\u7684\u65b9\u6cd5\u4e2d\u518d\u751f\u6210\u4e00\u4e2a\u5185\u90e8\u7c7b\u5bf9\u8c61\u53bb\u8c03\u7528\u5185\u90e8\u7c7b\u65b9\u6cd5\u3002<\/p>\n
\u5982\u679c\u6b64\u65f6\u6211\u4eec\u9700\u8981\u5f80\u5916\u90e8\u7c7b\u7684\u65b9\u6cd5\u4e2d\u4f20\u5165\u53c2\u6570\uff0c\u90a3\u4e48\u5916\u90e8\u7c7b\u7684\u65b9\u6cd5\u5f62\u53c2\u5fc5\u987b\u4f7f\u7528 final \u5b9a\u4e49\u3002<\/p>\n
\u81f3\u4e8e final \u5728\u8fd9\u91cc\u5e76\u6ca1\u6709\u7279\u6b8a\u542b\u4e49\uff0c\u53ea\u662f\u4e00\u79cd\u8868\u793a\u5f62\u5f0f\u800c\u5df2\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
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