{"id":64,"date":"2015-12-04T19:13:15","date_gmt":"2015-12-04T11:13:15","guid":{"rendered":"http:\/\/www.prayerlaputa.com\/?p=64"},"modified":"2015-12-04T19:13:15","modified_gmt":"2015-12-04T11:13:15","slug":"java%e6%a0%b8%e5%bf%83%e6%8a%80%e6%9c%af%e8%af%bb%e4%b9%a6%e7%ac%94%e8%ae%b0%ef%bc%882%ef%bc%89-%e7%ac%ac4%e7%ab%a0%e5%af%b9%e8%b1%a1%e4%b8%8e%e7%b1%bb","status":"publish","type":"post","link":"http:\/\/prayerlaputa.com\/?p=64","title":{"rendered":"Java\u6838\u5fc3\u6280\u672f\u8bfb\u4e66\u7b14\u8bb0\uff082\uff09\u2014\u2014\u7b2c4\u7ae0\u5bf9\u8c61\u4e0e\u7c7b"},"content":{"rendered":"<p><strong>4.1 \u9762\u5411\u5bf9\u8c61\u7a0b\u5e8f\u8bbe\u8ba1\u6982\u8ff0<\/strong><br \/>\n<strong>4.1.3 \u8bc6\u522b\u7c7b<\/strong><br \/>\n\u8bbe\u8ba1\u9762\u5411\u5bf9\u8c61\u7684\u7cfb\u7edf\u65f6\u9996\u5148\u4ece\u8bbe\u8ba1\u7c7b\u5f00\u59cb\uff0c\u7136\u540e\u6bcf\u4e2a\u7c7b\u4e2d\u6dfb\u52a0\u65b9\u6cd5\u3002<br \/>\n\u8bc6\u522b\u7c7b\u7684\u7b80\u5355\u89c4\u5219\u662f\u5728\u5206\u6790\u95ee\u9898\u7684\u8fc7\u7a0b\u4e2d\u5bfb\u627e\u540d\u8bcd\uff0c\u800c\u65b9\u6cd5\u5bf9\u5e94\u7740\u52a8\u8bcd\u3002\u2014\u2014\u201c\u540d\u8bcd\u4e0e\u52a8\u8bcd\u201d\u539f\u5219\u53ea\u662f\u4e00\u79cd\u7c97\u7565\u7684\u65b9\u6cd5\uff0c\u8fd8\u4f9d\u8d56\u4e8e\u4e2a\u4eba\u7684\u5f00\u53d1\u7ecf\u9a8c\u3002<!--more--><br \/>\n<strong>4.1.4 \u7c7b\u4e4b\u95f4\u7684\u5173\u7cfb<\/strong><br \/>\n\u7c7b\u4e4b\u95f4\u5e38\u89c1\u7684\u5173\u7cfb\u6709\uff1a<\/p>\n<ul>\n<li>\u4f9d\u8d56\uff08dependency\uff09:\u201duses-a\u201d\u5173\u7cfb\u3002<\/li>\n<li>\u805a\u5408\uff08aggregation\uff09:\u201dhas-a\u201d\u5173\u7cfb\u3002<\/li>\n<li>\u7ee7\u627f\uff08inheritance\uff09:\u201dis-a\u201d\u5173\u7cfb<\/li>\n<\/ul>\n<p><strong>4.2 \u4f7f\u7528\u73b0\u6709\u7c7b<\/strong><br \/>\n<strong>4.2.1 \u5bf9\u8c61\u4e0e\u5bf9\u8c61\u53d8\u91cf<\/strong><br \/>\n\u4e00\u4e2a\u5bf9\u8c61\u53d8\u91cf\u5e76\u6ca1\u6709\u5b9e\u9645\u5305\u542b\u4e00\u4e2a\u5bf9\u8c61\uff0c\u800c\u4ec5\u4ec5\u5f15\u7528\u4e00\u4e2a\u5bf9\u8c61\u3002<span id=\"more-528\"><\/span><br \/>\n\u5728Java\u4e2d\uff0c\u4efb\u4f55\u5bf9\u8c61\u53d8\u91cf\u7684\u503c\u90fd\u662f\u5bf9\u5b58\u50a8\u5728\u53e6\u5916\u4e00\u4e2a\u5730\u65b9\u7684\u4e00\u4e2a\u5bf9\u8c61\u7684\u5f15\u7528\u3002new\u64cd\u4f5c\u7b26\u7684\u8fd4\u56de\u503c\u4e5f\u662f\u4e00\u4e2a\u5f15\u7528\u3002<br \/>\nJava\u4e2d\u53ef\u4ee5\u5c06\u5bf9\u8c61\u53d8\u91cf\u8bbe\u7f6e\u4e3anull\uff0c\u800cC++\u4e2d\u6ca1\u6709\u7a7a\u5f15\u7528\uff0c\u800c\u4e14\u5f15\u7528\u4e0d\u80fd\u88ab\u8d4b\u503c\u3002\u53ef\u4ee5\u5c06Java\u7684\u5bf9\u8c61\u770b\u505aC++\u7684\u5bf9\u8c61\u6307\u9488\u3002\u4f8b\u5982\uff1a<br \/>\nDate birthday;\/\/Java<br \/>\n\u5b9e\u9645\u4e0a\u7b49\u540c\u4e8e\uff1a<br \/>\nDate* birthday;\/\/C++<br \/>\nJava\u4e2d\u5fc5\u987b\u4f7f\u7528clone()\u65b9\u6cd5\u83b7\u5f97\u5bf9\u8c61\u7684\u5b8c\u6574\u62f7\u8d1d\u3002<br \/>\n<strong>4.2.2 Java\u7c7b\u5e93\u4e2d\u7684GregorianCalendar\u7c7b<\/strong><br \/>\nDate\u7c7b\u7684\u65f6\u95f4\u662f\u7528\u8ddd\u79bb\u4e00\u4e2a\u56fa\u5b9a\u65f6\u95f4\u70b9\u7684\u6beb\u79d2\u6570\uff08\u53ef\u6b63\u53ef\u8d1f\uff09\u8868\u793a\u7684\uff0c\u8fd9\u4e2a\u70b9\u5373\u6240\u8c13\u7684\u201c\u7eaa\u5143\u201d\uff08epoch\uff09\uff0c\u5b83\u662fUTC\u65f6\u95f41970\u5e741\u67081\u65e500:00:00\uff08\u4e3a\u4f55\u9009\u62e9\u8fd9\u4e2a\u65f6\u95f4\u4f5c\u4e3a\u201c\u539f\u70b9\u201d\u53ef\u4ee5\u53c2\u8003\u8fd9\u91cc<a href=\"http:\/\/en.wikipedia.org\/wiki\/Unix_time\">UNIX_Time<\/a>\uff09\u3002<br \/>\n\u7c7b\u5e93\u8bbe\u8ba1\u8005\u89c9\u5f97\u5c06\u4fdd\u5b58\u65f6\u95f4\u4e0e\u7ed9\u65f6\u95f4\u70b9\u547d\u540d\u5206\u5f00\uff0c\u6240\u4ee5\u6807\u51c6Java\u7c7b\u5e93\u5206\u522b\u5305\u542b\u4e862\u4e2a\u7c7b\uff1a\u4e00\u4e2a\u7528\u6765\u8868\u793a\u65f6\u95f4\u70b9\u7684Date\u7c7b\uff0c\u53e6\u4e00\u4e2a\u7528\u6765\u8868\u793a\u5927\u5bb6\u719f\u6089\u7684\u65e5\u5386\u8868\u793a\u6cd5\u7684GregorianCalendar\u7c7b\u3002<br \/>\n<strong>4.2.3 \u66f4\u6539\u5668\u65b9\u6cd5\u4e0e\u8bbf\u95ee\u5668\u65b9\u6cd5<\/strong><br \/>\n\u5bf9\u5b9e\u4f8b\u57df\u505a\u51fa\u4fee\u6539\u7684\u65b9\u6cd5\u79f0\u4e3a\u66f4\u6539\u5668\u65b9\u6cd5\uff08mutator method\uff09\uff0c\u4ec5\u8bbf\u95ee\u5b9e\u4f8b\u57df\u800c\u4e0d\u8fdb\u884c\u4fee\u6539\u7684\u65b9\u6cd5\u79f0\u4e3a\u8bbf\u95ee\u5668\u65b9\u6cd5\uff08accessor method\uff09\u3002<br \/>\nPS: C++ \u4e2d\u5e26\u6709const\u540e\u7f00\u7684\u65b9\u6cd5\u662f\u8bbf\u95ee\u5668\u65b9\u6cd5\uff0c\u9ed8\u8ba4\u4e3a\u66f4\u6539\u5668\u65b9\u6cd5\u3002\u4f46Java\u4e2d\u8bbf\u95ee\u5668\u65b9\u6cd5\u4e0e\u66f4\u6539\u5668\u65b9\u6cd5\u5728\u8bed\u6cd5\u4e0a\u6ca1\u6709\u660e\u663e\u7684\u533a\u522b\u3002<br \/>\n\u6709\u5173\u65e5\u5386\u9700\u8981\u6ce8\u610f\u6bcf\u4e2a\u661f\u671f\u7684\u7b2c\u4e00\u5929\u5b58\u5728\u7740\u4e0d\u540c\u7684\u7ea6\u5b9a\uff0c\u7f8e\u56fd\u7b2c\u4e00\u5929\u662f\u5468\u65e5\uff0c\u6b27\u6d32\u5219\u662f\u5468\u4e00\u3002<br \/>\n\u5982\u679c\u60f3\u770b\u5230\u4e0d\u540c\u5730\u533a\u7a0b\u5e8f\u7684\u8f93\u51fa\uff0c\u5e94\u8be5\u5728main\u65b9\u6cd5\u7684\u7b2c\u4e00\u884c\u6dfb\u52a0\u5982\u4e0b\u4ee3\u7801\uff1a<\/p>\n<pre class=\"brush: java; title: ; notranslate\" title=\"\">Locale.setDefault(Locale.ITALY);\n<\/pre>\n<p><strong>4.3 \u7528\u6237\u81ea\u5b9a\u4e49\u7c7b<\/strong><br \/>\n<strong>4.3.2 \u591a\u4e2a\u6e90\u6587\u4ef6\u7684\u4f7f\u7528<\/strong><br \/>\n\u6709\u591a\u4e2a\u6e90\u6587\u4ef6\u65f6\uff0c\u67092\u79cd\u7f16\u8bd1\u6e90\u7a0b\u5e8f\u7684\u65b9\u5f0f\uff1a<\/p>\n<ul>\n<li>\u4f7f\u7528\u901a\u914d\u7b26\u8c03\u7528Java\u7f16\u8bd1\u5668\uff1a\u6bd4\u5982\u67092\u4e2a\u7c7b\uff0c\u5206\u522b\u662fEmployee.java, EmployeeTest.java\uff0c\u5219javac Employee*.java<\/li>\n<li>\u5229\u7528javac\u81ea\u52a8\u641c\u7d22\u6e90\u6587\u4ef6\uff1a\u4f8b\u5b50\u540c\u4e0a\uff0c\u76f4\u63a5javac EmployeeTest.java\uff0c\u5f53\u7f16\u8bd1\u5668\u53d1\u73b0\u8be5\u7c7b\u8c03\u7528\u4e86Employee.java\uff0c\u4f1a\u81ea\u52a8\u641c\u7d22Employee.java\u5e76\u7f16\u8bd1\uff0c\u800c\u4e14\u5df2\u6709Employee.class\u4f46Employee.java\u7248\u672c\u66f4\u65b0\uff0cJava\u7f16\u8bd1\u5668\u4f1a\u81ea\u52a8\u91cd\u65b0\u7f16\u8bd1Employee.java\uff08\u76f8\u5f53\u4e8e\u5185\u7f6e\u4e86\u201cmake\u201d\u7684\u529f\u80fd\uff09\u3002<\/li>\n<\/ul>\n<p><strong>4.3.6 \u5c01\u88c5\u7684\u4f18\u70b9<\/strong><br \/>\n\u6ce8\u610f\u4e0d\u8981\u7f16\u5199\u8fd4\u56de\u5f15\u7528\u53ef\u53d8\u5bf9\u8c61\u7684\u8bbf\u95ee\u5668\u65b9\u6cd5\u3002\u8be6\u7ec6\u5185\u5bb9\u53c2\u89c1\u4e66P108\u3002<br \/>\n<strong>4.3.7 \u57fa\u4e8e\u7c7b\u7684\u8bbf\u95ee\u6743\u9650<\/strong><br \/>\n\u4e00\u4e2a\u65b9\u6cd5\u53ef\u4ee5\u8bbf\u95ee<strong>\u6240\u5c5e\u7c7b\u7684\u6240\u6709\u5bf9\u8c61<\/strong>\u7684\u79c1\u6709\u6570\u636e\u3002\u4f8b\u5982\uff1a<\/p>\n<pre class=\"brush: java; title: ; notranslate\" title=\"\">class Employee\n{\n...\nboolean equals(Employee other)\n{\nreturn name.equals(&lt;strong&gt;other.name&lt;\/strong&gt;);\n}\n}\n<\/pre>\n<p><strong>4.3.9 final\u5b9e\u4f8b\u57df<\/strong><br \/>\n\u6784\u5efa\u5bf9\u8c61\u65f6\u5fc5\u987b\u521d\u59cb\u5316final\u57df\u3002\u5373\u5fc5\u987b\u786e\u4fdd\u6bcf\u4e2a\u6784\u9020\u5668\u6267\u884c\u540e\uff0c\u8fd9\u4e2a\u57df\u7684\u503c\u88ab\u8bbe\u7f6e\uff0c\u5e76\u4e14\u5728\u4e4b\u540e\u7684\u64cd\u4f5c\u4e2d\uff0c\u4e0d\u80fd\u518d\u5bf9\u5b83\u8fdb\u884c\u4fee\u6539\u3002<br \/>\nfinal\u5927\u90fd\u5e94\u7528\u4e8e\u57fa\u672c\u6570\u636e\u7c7b\u578b\u57df\u6216\u662f\u4e0d\u53ef\u53d8\u7c7b\uff08\u7c7b\u4e2d\u7684\u6bcf\u4e2a\u65b9\u6cd5\u90fd\u4e0d\u4f1a\u6539\u53d8\u5176\u5bf9\u8c61\uff09\u7684\u57df\u3002\u5bf9\u4e8e\u53ef\u53d8\u7684\u7c7b\uff0cfinal\u5c31\u53ef\u80fd\u4f1a\u5e26\u6765\u6df7\u6dc6\uff0c\u6bd4\u5982<\/p>\n<pre class=\"brush: java; title: ; notranslate\" title=\"\">private final Date hireDate;<\/pre>\n<p>\uff0c\u4ec5\u4ec5\u610f\u5473\u7740hireDate\u53d8\u91cf\u7684\u5bf9\u8c61\u5f15\u7528\u5728\u5bf9\u8c61\u6784\u9020\u540e\u4e0d\u80fd\u88ab\u6539\u53d8\uff0c\u5e76\u4e0d\u610f\u5473\u7740hireDate\u5bf9\u8c61\u662f\u4e00\u4e2a\u5e38\u91cf\u3002<br \/>\n<strong>4.4 \u9759\u6001\u57df\u4e0e\u9759\u6001\u65b9\u6cd5<\/strong><br \/>\n<strong>4.2 \u9759\u6001\u5e38\u91cf<\/strong><br \/>\n\u5e38\u89c1\u7684\u5e38\u91cf\uff1aMath.PI, System.out<br \/>\n<strong>4.3 \u9759\u6001\u65b9\u6cd5<\/strong><br \/>\n\u53ef\u4ee5\u8ba4\u4e3a\u9759\u6001\u65b9\u6cd5\u662f\u6ca1\u6709this\u53c2\u6570\u7684\u65b9\u6cd5\u3002\u7531\u4e8e\u9759\u6001\u65b9\u6cd5\u4e0d\u80fd\u64cd\u4f5c\u5bf9\u8c61\uff0c\u6240\u4ee5\u4e0d\u80fd\u518d\u9759\u6001\u65b9\u6cd5\u4e2d\u8bbf\u95ee\u5b9e\u4f8b\u57df\u3002\u4f46\u9759\u6001\u65b9\u6cd5\u53ef\u4ee5\u8bbf\u95ee\u81ea\u8eab\u7c7b\u4e2d\u7684\u9759\u6001\u57df\u3002<br \/>\n\u4f7f\u7528\u9759\u6001\u65b9\u6cd5\u7684\u60c5\u51b5\uff1a<\/p>\n<ul>\n<li>\u4e00\u4e2a\u65b9\u6cd5\u4e0d\u9700\u8981\u8bbf\u95ee\u5bf9\u8c61\u72b6\u6001\uff0c\u5176\u6240\u9700\u53c2\u6570\u90fd\u662f\u901a\u8fc7\u663e\u5f0f\u53c2\u6570\u63d0\u4f9b\uff08\u5982Math.pow\uff09<\/li>\n<li>\u4e00\u4e2a\u65b9\u6cd5\u53ea\u9700\u8981\u8bbf\u95ee\u7c7b\u7684\u9759\u6001\u57df<\/li>\n<\/ul>\n<p>\u9759\u6001\u65b9\u6cd5\u8fd8\u6709\u4e00\u79cd\u5e38\u89c1\u7684\u7528\u9014\uff1afactory\u65b9\u6cd5\u3002<br \/>\n<strong>4.5 \u65b9\u6cd5\u53c2\u6570<\/strong><br \/>\nJava\u603b\u662f\u91c7\u7528\u503c\u8c03\u7528\uff0c\u65b9\u6cd5\u5f97\u5230\u7684\u662f\u6240\u6709\u53c2\u6570\u503c\u7684\u4e00\u4e2a\u62f7\u8d1d\uff0c\u65b9\u6cd5\u4e0d\u80fd\u4fee\u6539\u4f20\u9012\u7ed9\u5b83\u7684\u4efb\u4f55\u53c2\u6570\u53d8\u91cf\u7684\u5185\u5bb9\u3002Java\u4e2d\u65b9\u6cd5\u53c2\u6570\u7684\u4f7f\u7528\u60c5\u51b5\uff1a<\/p>\n<ul>\n<li>\u4e00\u4e2a\u65b9\u6cd5\u4e0d\u80fd\u4fee\u6539\u4e00\u4e2a\u57fa\u672c\u6570\u636e\u7c7b\u578b\u7684\u53c2\u6570<\/li>\n<li>\u4e00\u4e2a\u65b9\u6cd5\u53ef\u4ee5\u6539\u53d8\u4e00\u4e2a\u5bf9\u8c61\u53c2\u6570\u7684\u72b6\u6001<\/li>\n<li>\u4e00\u4e2a\u65b9\u6cd5\u4e0d\u80fd\u5b9e\u73b0\u8ba9\u5bf9\u8c61\u53c2\u6570\u5f15\u7528\u4e00\u4e2a\u65b0\u7684\u5bf9\u8c61<\/li>\n<\/ul>\n<p>PS\uff1aC++\u6709\u503c\u8c03\u7528\u548c\u5f15\u7528\u8c03\u7528\uff0c\u5f15\u7528\u53c2\u6570\u6807\u6709&amp;\u7b26\u53f7\u3002<br \/>\n<strong>4.6 \u5bf9\u8c61\u6784\u9020<\/strong><br \/>\n<strong>4.6.1 \u91cd\u8f7d<\/strong><br \/>\nJava\u5141\u8bb8\u91cd\u8f7d\u4efb\u4f55\u65b9\u6cd5\uff0c\u4f46\u65b9\u6cd5\u7684\u7b7e\u540d\uff08\u65b9\u6cd5\u540d\u4ee5\u53ca\u53c2\u6570\u7c7b\u578b\uff0c\u4e0d\u5305\u62ec\u8fd4\u56de\u7c7b\u578b\uff09\u5fc5\u987b\u4e0d\u540c\u3002\u5373\uff0c\u4e0d\u80fd\u6709\u4e24\u4e2a\u540d\u5b57\u76f8\u540c\u3001\u53c2\u6570\u7c7b\u578b\u76f8\u540c\u3001\u8fd4\u56de\u7c7b\u578b\u4e0d\u540c\u7684\u65b9\u6cd5\u3002<br \/>\n<strong>4.6.2 \u9ed8\u8ba4\u57df\u521d\u59cb\u5316<\/strong><br \/>\n\u5982\u679c\u5728\u6784\u9020\u5668\u4e2d\u6ca1\u6709\u663e\u5f0f\u5730\u7ed9\u57df\u8d4b\u4e88\u521d\u503c\uff0c\u90a3\u4e48\u5c31\u4f1a\u88ab\u81ea\u52a8\u5730\u8d4b\u4e88\u9ed8\u8ba4\u503c\uff1a\u6570\u503c\u4e3a0\u3001\u5e03\u5c14\u503c\u4e3afalse\u3001\u5bf9\u8c61\u5f15\u7528\u4e3anull\u3002\u4f46\u4e00\u822c\u90fd\u4f1a\u660e\u786e\u5730\u5bf9\u57df\u8fdb\u884c\u521d\u59cb\u5316\uff0c\u5426\u5219\u5f71\u54cd\u7a0b\u5e8f\u7684\u53ef\u8bfb\u6027\u3002<br \/>\nPS\uff1a\u8fd9\u662f\u57df\u4e0e\u5c40\u90e8\u53d8\u91cf\u7684\u4e3b\u8981\u4e0d\u540c\u70b9\u3002\u5fc5\u987b\u660e\u786e\u5730\u521d\u59cb\u5316\u65b9\u6cd5\u4e2d\u7684\u5c40\u90e8\u53d8\u91cf\u3002\u4f46\u5982\u679c\u6ca1\u6709\u521d\u59cb\u5316\u7c7b\u4e2d\u7684\u57df\uff0c\u5c06\u4f1a\u88ab\u521d\u59cb\u5316\u4e3a\u9ed8\u8ba4\u503c\u3002<br \/>\n<strong>4.6.3 \u9ed8\u8ba4\u6784\u9020\u5668<\/strong><br \/>\n\u9ed8\u8ba4\u6784\u9020\u5668\u6307\u6ca1\u6709\u53c2\u6570\u7684\u6784\u9020\u5668\u3002<br \/>\n\u5982\u679c\u7f16\u5199\u4e00\u4e2a\u7c7b\u65f6\uff0c\u6ca1\u6709\u7f16\u5199\u6784\u9020\u5668\uff0c\u5219\u7cfb\u7edf\u4f1a\u63d0\u4f9b\u4e00\u4e2a\u9ed8\u8ba4\u6784\u9020\u5668\u3002\u8fd9\u4e2a\u9ed8\u8ba4\u6784\u9020\u5668\u5c06\u6240\u6709\u7684\u5b9e\u4f8b\u57df\u8bbe\u7f6e\u4e3a\u9ed8\u8ba4\u503c\u3002\u5982\u679c\u7c7b\u4e2d\u63d0\u4f9b\u4e86\u81f3\u5c11\u4e00\u4e2a\u6784\u9020\u5668\uff0c\u4f46\u6ca1\u6709\u63d0\u4f9b\u9ed8\u8ba4\u7684\u6784\u9020\u5668\uff0c\u5219\u5728\u6784\u9020\u5bf9\u8c61\u65f6\u5982\u679c\u6ca1\u6709\u63d0\u4f9b\u6784\u9020\u53c2\u6570\u5c31\u4f1a\u88ab\u89c6\u4e3a\u4e0d\u5408\u6cd5\u3002\u5373\uff1a<strong>\u4ec5\u5f53\u7c7b\u6ca1\u6709\u63d0\u4f9b\u4efb\u4f55\u6784\u9020\u5668\u65f6\uff0c\u7cfb\u7edf\u624d\u4f1a\u63d0\u4f9b\u4e00\u4e2a\u9ed8\u8ba4\u6784\u9020\u5668\uff0c\u5982\u679c\u7f16\u5199\u7c7b\u65f6\u7ed9\u51fa\u4e86\u4e00\u4e2a\u6784\u9020\u5668\uff0c\u7cfb\u7edf\u5c31\u4e0d\u4f1a\u63d0\u4f9b\u9ed8\u8ba4\u6784\u9020\u5668\uff0c\u5fc5\u987b\u624b\u5199\u3002<\/strong>\u5982\u679c\u60f3\u8981\u7ed9\u57df\u8d4b\u9ed8\u8ba4\u503c\uff0c\u5219\u53ef\u4ee5<\/p>\n<pre class=\"brush: java; title: ; notranslate\" title=\"\">public ClassName(){\n}\n<\/pre>\n<p><strong>4.6.6 \u8c03\u7528\u53e6\u4e00\u4e2a\u6784\u9020\u5668<\/strong><br \/>\n\u5982\u679c\u6784\u9020\u5668\u7684\u7b2c\u4e00\u6761\u8bed\u53e5\u662fthis(\u2026)\uff0c\u8fd9\u4e2a\u6784\u9020\u5668\u5c06\u8c03\u7528\u540c\u4e00\u4e2a\u7c7b\u7684\u53e6\u4e00\u4e2a\u6784\u9020\u5668\u3002<br \/>\n<strong>4.6.7 \u521d\u59cb\u5316\u5757<\/strong><br \/>\n\u521d\u59cb\u5316\u6570\u636e\u57df\u7684\u65b9\u6cd5\uff1a<\/p>\n<ul>\n<li>\u6784\u9020\u5668\u4e2d\u8bbe\u7f6e\u503c<\/li>\n<li>\u58f0\u660e\u4e2d\u8d4b\u503c<\/li>\n<li>\u521d\u59cb\u5316\u5757<\/li>\n<\/ul>\n<p>\u4e00\u4e2a\u7c7b\u7684\u58f0\u660e\u4e2d\u53ef\u4ee5\u5305\u542b\u591a\u4e2a\u4ee3\u7801\u5757\uff0c\u53ea\u8981\u6784\u9020\u7c7b\u7684\u5bf9\u8c61\uff0c\u8fd9\u4e9b\u5757\u5c31\u4f1a\u88ab\u6267\u884c\u3002\u5efa\u8bae\u5c06\u521d\u59cb\u5316\u5757\u653e\u5728\u57df\u5b9a\u4e49\u4e4b\u540e\u3002<br \/>\n\u53ef\u4ee5\u7528\u9759\u6001\u7684\u521d\u59cb\u5316\u5757\u6765\u5bf9\u9759\u6001\u57df\u8fdb\u884c\u521d\u59cb\u5316\u3002<br \/>\n<strong>4.6.8 \u5bf9\u8c61\u6790\u6784\u4e0efinalize\u65b9\u6cd5<\/strong><br \/>\n\u4e00\u822c\u4e0d\u63a8\u8350\u4f7f\u7528finalize\u65b9\u6cd5\uff0c\u4f46\u5982\u679c\u67d0\u4e9b\u5bf9\u8c61\u4f7f\u7528\u4e86\u5185\u5b58\u4e4b\u5916\u7684\u5176\u4ed6\u8d44\u6e90\uff0c\u4f8b\u5982\uff0c\u6587\u4ef6\u6216\u4f7f\u7528\u4e86\u7cfb\u7edf\u8d44\u6e90\u7684\u53e6\u4e00\u4e2a\u5bf9\u8c61\u7684\u53e5\u67c4\u3002\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u5f53\u8d44\u6e90\u4e0d\u518d\u9700\u8981\u65f6\uff0c\u5c06\u5176\u56de\u6536\u548c\u518d\u5229\u7528\u5c31\u663e\u5f97\u5341\u5206\u91cd\u8981\u3002<br \/>\n\u53ef\u4ee5\u4e3a\u4efb\u4f55\u4e00\u4e2a\u7c7b\u6dfb\u52a0finalize\u65b9\u6cd5\uff0c\u8be5\u65b9\u6cd5\u5c06\u5728\u5783\u573e\u56de\u6536\u5668\u6e05\u695a\u5bf9\u8c61\u4e4b\u524d\u8c03\u7528\u3002\u5b9e\u9645\u5e94\u7528\u4e2d\u4e0d\u8981\u4f9d\u8d56\u4e8e\u4f7f\u7528finalize\u65b9\u6cd5\u56de\u6536\u4efb\u4f55\u77ed\u7f3a\u7684\u8d44\u6e90\uff0c\u56e0\u4e3a\u5f88\u96be\u77e5\u9053\u8fd9\u4e2a\u65b9\u6cd5\u4ec0\u4e48\u65f6\u5019\u7528\u5230\u3002<br \/>\n<strong>4.7 \u5305<\/strong><br \/>\n\u4e3a\u4e86\u4fdd\u8bc1\u5305\u540d\u7684\u552f\u4e00\uff0c\u5efa\u8bae\u5c06\u516c\u53f8\u7684\u57df\u540d\u9006\u5e8f\u4f5c\u4e3a\u5305\u540d\uff0c\u5e76\u4e14\u5bf9\u4e8e\u4e0d\u540c\u7684\u9879\u76ee\u4f7f\u7528\u4e0d\u540c\u7684\u5b50\u5305\u3002<br \/>\n<strong>4.7.2 \u9759\u6001\u5bfc\u5165<\/strong><br \/>\nJava SE 5\u5f00\u59cb\uff0cimport\u8bed\u53e5\u4e0d\u4ec5\u53ef\u4ee5\u5bfc\u5165\u7c7b\uff0c\u8fd8\u589e\u52a0\u5bfc\u5165\u9759\u6001\u65b9\u6cd5\u548c\u9759\u6001\u57df\u7684\u529f\u80fd\u3002\u5982:<\/p>\n<pre class=\"brush: java; title: ; notranslate\" title=\"\">import static java.lang.System.*;\n<\/pre>\n<p>\u5c31\u53ef\u4ee5\u4f7f\u7528System\u7c7b\u4e2d\u7684\u9759\u6001\u65b9\u6cd5\u548c\u9759\u6001\u57df\uff0c\u800c\u4e0d\u7528\u52a0\u7c7b\u540d\u524d\u7f00\uff1a<\/p>\n<pre class=\"brush: java; title: ; notranslate\" title=\"\">out.println(\"helllo\");\nexit(0);\n<\/pre>\n<p>\u9759\u6001\u5bfc\u5165\u6709\u4e24\u4e2a\u5b9e\u9645\u5e94\u7528\uff1a\u7b97\u672f\u51fd\u6570\uff08\u9759\u6001\u5bfc\u5165Math\u7684\u57df\u548c\u65b9\u6cd5\uff09\uff0c\u7b28\u91cd\u7684\u5e38\u91cf<br \/>\n<strong>4.7.3 \u5c06\u7c7b\u653e\u5165\u5305\u4e2d<\/strong><br \/>\n\u6ce8\u610f\u5982\u679c\u7c7b\u662f\u67d0\u4e2a\u5305\u4e2d\uff0c\u5c31\u5fc5\u987b\u5c06\u5305\u7684\u540d\u5b57\u653e\u5728\u6e90\u6587\u4ef6\u5f00\u5934\uff0cjavac\u7f16\u8bd1\u65f6\u4e5f\u9700\u8981\u5c06\u6ce8\u610f\u52a0\u4e0a\u5305\u540d\uff08\u4e5f\u8981\u6ce8\u610f\u5f53\u524d\u76ee\u5f55\u662f\u4ec0\u4e48\uff09\u3002<br \/>\n<strong>4.7.4 \u5305\u4f5c\u7528\u57df<\/strong><br \/>\n\u5982\u679c\u6ca1\u6709\u6307\u5b9apublic\u6216\u662fprivate\uff0c\u8fd9\u4e2a\u90e8\u5206\uff08\u7c7b\u3001\u65b9\u6cd5\u6216\u53d8\u91cf\uff09\u53ef\u4ee5\u88ab\u540c\u4e00\u4e2a\u5305\u4e2d\u7684\u6240\u6709\u65b9\u6cd5\u8bbf\u95ee\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>4.1 \u9762\u5411\u5bf9\u8c61\u7a0b\u5e8f\u8bbe\u8ba1\u6982\u8ff0 4.1.3 \u8bc6\u522b\u7c7b \u8bbe\u8ba1\u9762\u5411\u5bf9\u8c61\u7684\u7cfb\u7edf\u65f6\u9996\u5148\u4ece\u8bbe\u8ba1\u7c7b\u5f00\u59cb\uff0c\u7136\u540e\u6bcf\u4e2a\u7c7b\u4e2d\u6dfb\u52a0\u65b9\u6cd5\u3002 <a href='http:\/\/prayerlaputa.com\/?p=64' class='excerpt-more'>[&#8230;]<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0},"categories":[6,12,23],"tags":[33,44,55],"_links":{"self":[{"href":"http:\/\/prayerlaputa.com\/index.php?rest_route=\/wp\/v2\/posts\/64"}],"collection":[{"href":"http:\/\/prayerlaputa.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/prayerlaputa.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/prayerlaputa.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/prayerlaputa.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=64"}],"version-history":[{"count":0,"href":"http:\/\/prayerlaputa.com\/index.php?rest_route=\/wp\/v2\/posts\/64\/revisions"}],"wp:attachment":[{"href":"http:\/\/prayerlaputa.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=64"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/prayerlaputa.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=64"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/prayerlaputa.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=64"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}