{"id":1326,"date":"2023-03-08T18:21:04","date_gmt":"2023-03-08T10:21:04","guid":{"rendered":"https:\/\/fireinsect.top\/?p=1326"},"modified":"2023-03-08T21:55:31","modified_gmt":"2023-03-08T13:55:31","slug":"%e9%9d%a2%e8%af%95%e9%a2%98%e6%95%b4%e7%90%86-java%e5%88%9d%e7%ba%a7%e9%9d%a2%e8%af%95%e9%a2%98","status":"publish","type":"post","link":"https:\/\/fireinsect.top\/index.php\/2023\/03\/08\/%e9%9d%a2%e8%af%95%e9%a2%98%e6%95%b4%e7%90%86-java%e5%88%9d%e7%ba%a7%e9%9d%a2%e8%af%95%e9%a2%98\/","title":{"rendered":"\u9762\u8bd5\u9898\u6574\u7406—Java\u521d\u7ea7\u9762\u8bd5\u9898"},"content":{"rendered":"\n\n\n\n\n

Java\u4e2d\u6709\u54ea\u51e0\u79cd\u65b9\u5f0f\u6765\u521b\u5efa\u7ebf\u7a0b\u6267\u884c\u4efb\u52a1<\/strong><\/p>\n\n\n\n

\u5728Java\u4e2d\u672c\u8d28\u4e0a\u53ea\u6709\u4e00\u79cd\u521b\u5efa\u7ebf\u7a0b\u7684\u65b9\u5f0f—–\u5b9e\u73b0Runnable\u63a5\u53e3<\/p>\n\n\n\n

\uff081\uff09\u5b9e\u73b0Runnable\u63a5\u53e3<\/p>\n\n\n\n

\uff082\uff09\u7ee7\u627fThread<\/p>\n\n\n\n

\uff083\uff09\u5b9e\u73b0Callable\u63a5\u53e3\uff08\u53ef\u4ee5\u83b7\u53d6\u4efb\u52a1\u7ed3\u679c\uff0c\u4f7f\u7528FutureTask\uff09<\/p>\n\n\n\n

\uff084\uff09\u4f7f\u7528\u7ebf\u7a0b\u6c60\u6765\u521b\u5efa\u7ebf\u7a0b<\/p>\n\n\n\n

<\/div>\n\n\n\n

\u7ebf\u7a0b\u6c60\u6709\u54ea\u51e0\u79cd\u72b6\u6001\uff0c\u6bcf\u79cd\u72b6\u6001\u8868\u793a\u4ec0\u4e48\uff1f<\/strong><\/p>\n\n\n\n

\uff081\uff09Running\u72b6\u6001\uff1a\u8868\u793a\u7ebf\u7a0b\u6c60\u6b63\u5e38\u8fd0\u884c\uff0c\u65e2\u80fd\u63a5\u6536\u4efb\u52a1\u4e5f\u4f1a\u5904\u7406\u961f\u5217\u4efb\u52a1<\/p>\n\n\n\n

\uff082\uff09Shutdown\u72b6\u6001\uff1a\u8868\u793a\u7ebf\u7a0b\u6c60\u5904\u4e8e\u6b63\u5728\u5173\u95ed\u72b6\u6001\uff0c\u4e0d\u4f1a\u63a5\u6536\u65b0\u4efb\u52a1\uff0c\u4f46\u4f1a\u628a\u961f\u5217\u4e2d\u7684\u4efb\u52a1\u5904\u7406\u5b8c\uff0c\u4f7f\u7528shutdow()\u65b9\u6cd5<\/p>\n\n\n\n

\uff083\uff09Stop\u72b6\u6001\uff1a\u8868\u793a\u7ebf\u7a0b\u6c60\u5904\u4e8e\u6b63\u5728\u505c\u6b62\u72b6\u6001\uff0c\u65e2\u4e0d\u4f1a\u63a5\u6536\u4efb\u52a1\uff0c\u4e5f\u4e0d\u4f1a\u5904\u7406\u961f\u5217\u4e2d\u7684\u4efb\u52a1\uff0c\u4f7f\u7528shutdownow()\u65b9\u6cd5<\/p>\n\n\n\n

\uff084\uff09Tidying\uff1a\u7ebf\u7a0b\u6c60\u6ca1\u7528\u7ebf\u7a0b\u8fd0\u884c\u540e\u7684\u72b6\u6001\uff0c\u5e76\u4f1a\u8c03\u7528terminated()\u7a7a\u65b9\u6cd5\uff0c\u7ed9\u4e0e\u6269\u5c55<\/p>\n\n\n\n

\uff085\uff09Terminated\u72b6\u6001\uff1aterminated()\u65b9\u6cd5\u8c03\u7528\u540e\u4f1a\u53d8\u6210\u8be5\u72b6\u6001<\/p>\n\n\n\n

<\/div>\n\n\n\n

JDK\u3001JRE\u3001JVM\u4e4b\u95f4\u7684\u533a\u522b<\/strong><\/p>\n\n\n\n

JDK\uff0cJava\u6807\u51c6\u5f00\u53d1\u5305\uff0c\u63d0\u4f9b\u7f16\u8bd1\u3001\u8fd0\u884cJava\u6240\u9700\u7684\u5404\u79cd\u5de5\u5177\u548c\u8d44\u6e90\uff0c\u5305\u62ecJava\u7f16\u8bd1\u5668\u3001Java\u8fd0\u884c\u65f6\u73af\u5883\uff0c\u4ee5\u53ca\u5e38\u7528Java\u7c7b\u5e93<\/p>\n\n\n\n

JRE\uff0cJava\u8fd0\u884c\u73af\u5883\uff0c\u7528\u4e8e\u8fd0\u884cJava\u5b57\u8282\u7801\u6587\u4ef6<\/p>\n\n\n\n

JVM\uff0cJava\u865a\u62df\u673a\uff0c\u662fJRE\u7684\u4e00\u90e8\u5206\uff0c\u8d1f\u8d23\u8fd0\u884c\u5b57\u8282\u7801\u6587\u4ef6<\/p>\n\n\n\n

Java\u4ee3\u7801\u4f7f\u7528JDK\u4e2d\u7684\u7f16\u8bd1\u5668javac\u7f16\u8bd1\u4e3a\u5b57\u8282\u7801\uff0c\u518d\u5728JVM\u4e2d\u8fd0\u884c\u3002<\/p>\n\n\n\n

JDK\u5305\u542b\u4e86JRE\uff0cJRE\u5305\u542b\u4e86JVM<\/p>\n\n\n\n

<\/div>\n\n\n\n

hashCode()\u4e0eequals()\u4e4b\u95f4\u7684\u5173\u7cfb<\/strong><\/p>\n\n\n\n

\u5728Java\u4e2d\uff0c\u6bcf\u4e2a\u5bf9\u8c61\u90fd\u53ef\u4ee5\u8c03\u7528\u81ea\u5df1\u7684hashCode()\u65b9\u6cd5\u6765\u5f97\u5230\u81ea\u5df1\u7684\u54c8\u5e0c\u503c\uff0c\u76f8\u5f53\u4e8e\u5bf9\u8c61\u7684\u6307\u7eb9\u4fe1\u606f\u3002<\/p>\n\n\n\n

\u5f53\u4e24\u4e2a\u5bf9\u8c61\u54c8\u5e0c\u503c\u76f8\u540c\u65f6\uff0c\u4e0d\u4e00\u5b9a\u662f\u540c\u4e00\u4e2a\u5bf9\u8c61\u3002<\/p>\n\n\n\n

\u5728\u6bd4\u8f83\u4e24\u4e2a\u5bf9\u8c61\u662f\u5426\u76f8\u7b49\u65f6\uff0c\u4f1a\u5148\u6bd4\u8f83\u4e24\u4e2a\u5bf9\u8c61\u7684hashCode()\uff0c\u5982\u679c\u54c8\u5e0c\u503c\u76f8\u540c\uff0c\u518d\u8c03\u7528equals()\u65b9\u6cd5\u6bd4\u8f83\uff0c\u5982\u679c\u76f8\u540c\u5219\u662f\u4e24\u4e2a\u76f8\u7b49\u7684\u5bf9\u8c61\u3002<\/p>\n\n\n\n

<\/div>\n\n\n\n

String\u3001StringBuffer\u3001StringBuilder\u7684\u533a\u522b<\/strong><\/p>\n\n\n\n

\uff081\uff09String\u662f\u4e0d\u53ef\u53d8\u7684\uff0c\u5982\u679c\u5c1d\u8bd5\u4fee\u6539\uff0c\u4f1a\u751f\u6210\u4e00\u4e2a\u65b0\u7684\u5b57\u7b26\u4e32\u5bf9\u8c61\uff0c\u800cStringBuffer\u548cStringBuilder\u662f\u53ef\u53d8\u7684\u3002<\/p>\n\n\n\n

\uff082\uff09StringBuffer\u662f\u7ebf\u7a0b\u5b89\u5168\u7684\uff0cStringBuilder\u662f\u7ebf\u7a0b\u4e0d\u5b89\u5168\u7684\uff0c\u6240\u4ee5\u5728\u5355\u7ebf\u7a0b\u73af\u5883\u4e0bStringBuilder\u6548\u7387\u4f1a\u66f4\u9ad8\u3002<\/p>\n\n\n\n

<\/div>\n\n\n\n

\u6cdb\u578b\u4e2dextends\u548csuper\u7684\u533a\u522b<\/strong><\/p>\n\n\n\n

1.<? extends T>\u8868\u793a\u5305\u62ecT\u5728\u5185\u7684\u4efb\u4f55T\u7684\u5b50\u7c7b<\/p>\n\n\n\n

2.<? super T>\u8868\u793a\u5305\u62ecT\u5728\u5185\u7684\u4efb\u4f55T\u7684\u7236\u7c7b<\/p>\n\n\n\n

\u5982List<E extends Number> \u53ef\u4ee5\u7528\u4e8e\u9650\u5236\u6cdb\u578b\u7684\u7c7b\u578b<\/p>\n\n\n\n

<\/div>\n\n\n\n

==\u548cequals\u65b9\u6cd5\u7684\u533a\u522b<\/strong><\/p>\n\n\n\n

==\u5982\u679c\u662f\u57fa\u672c\u6570\u636e\u7c7b\u578b\uff0c\u6bd4\u8f83\u7684\u662f\u503c\uff0c\u5982\u679c\u662f\u5f15\u7528\u7c7b\u578b\uff0c\u6bd4\u8f83\u7684\u662f\u5f15\u7528\u5730\u5740<\/p>\n\n\n\n

equals\uff1a\u5177\u4f53\u770b\u5404\u4e2a\u7c7b\u91cd\u5199equals\u65b9\u6cd5\u4e4b\u540e\u7684\u6bd4\u8f83\u903b\u8f91\u3002<\/p>\n\n\n\n

\u5982String\u7c7b\uff0c\u4e0d\u80fd\u4f7f\u7528==\u6bd4\u8f83\u4e24\u4e2a\u5b57\u7b26\u4e32\u7684\u503c\uff0c\u800c\u9700\u8981\u4f7f\u7528equals<\/p>\n\n\n\n

<\/div>\n\n\n\n

\u91cd\u8f7d\u548c\u91cd\u5199\u7684\u533a\u522b<\/strong><\/p>\n\n\n\n

\u91cd\u8f7d\uff1a\u53d1\u751f\u5728\u540c\u4e00\u4e2a\u7c7b\u4e2d\uff0c\u65b9\u6cd5\u540d\u76f8\u540c\uff0c\u53c2\u6570\u7c7b\u578b\u3001\u4e2a\u6570\u3001\u987a\u5e8f\u4e0d\u540c\uff0c\u65b9\u6cd5\u8fd4\u56de\u503c\u548c\u8bbf\u95ee\u4fee\u9970\u7b26\u53ef\u4ee5\u4e0d\u540c\uff0c\u4f46\u91cd\u8f7d\u548c\u8fd4\u56de\u503c\u65e0\u5173\uff0c\u5373\u53ea\u6709\u8fd4\u56de\u503c\u4e0d\u4e00\u6837\u4e0d\u53eb\u91cd\u8f7d<\/p>\n\n\n\n

\u91cd\u5199\uff1a\u53d1\u751f\u5728\u5b50\u7c7b\u4e2d\uff0c\u65b9\u6cd5\u540d\u3001\u53c2\u6570\u5217\u8868\u76f8\u540c\uff0c\u8fd4\u56de\u503c\u8303\u56f4\u5c0f\u4e8e\u7b49\u4e8e\u7236\u7c7b\uff0c\u629b\u51fa\u7684\u5f02\u5e38\u8303\u56f4\u5c0f\u4e8e\u7b49\u4e8e\u7236\u7c7b\uff0c\u8bbf\u95ee\u4fee\u9970\u7b26\u8303\u56f4\u5927\u4e8e\u7b49\u4e8e\u7236\u7c7b\uff1b\u5982\u679c\u7236\u7c7b\u65b9\u6cd5\u8bbf\u95ee\u4fee\u9970\u7b26\u4e3aprivate\u5219\u5b50\u7c7b\u4e0d\u80fd\u91cd\u5199\u8be5\u65b9\u6cd5\u3002<\/p>\n\n\n\n

<\/div>\n\n\n\n

List\u548cSet\u7684\u533a\u522b<\/strong><\/p>\n\n\n\n

List\uff1a\u6709\u5e8f\u7684\uff0c\u6309\u5bf9\u8c61\u8fdb\u5165\u987a\u5e8f\u4fdd\u5b58\u5bf9\u8c61\uff0c\u53ef\u91cd\u590d\uff0c\u8fd0\u884c\u591a\u4e2anull\u5143\u7d20\uff0c\u53ef\u4ee5\u4f7f\u7528iterator\u53d6\u51fa\u6240\u6709\u5143\u7d20\uff0c\u518d\u9010\u4e00\u904d\u5386\uff0c\u4e5f\u53ef\u4ee5\u4f7f\u7528get\u65b9\u6cd5\u83b7\u53d6\u4e0b\u6807\u5143\u7d20<\/p>\n\n\n\n

Set\uff1a\u65e0\u5e8f\u7684\uff0c\u4e0d\u53ef\u91cd\u590d\uff0c\u6700\u591a\u5141\u8bb8\u4e00\u4e2anull\u5143\u7d20\uff0c\u53d6\u5143\u7d20\u65f6\u4f7f\u7528iterator\u63a5\u53e3\u53d6\u5f97\u6240\u6709\u5143\u7d20\uff0c\u518d\u9010\u4e00\u904d\u5386<\/p>\n\n\n\n

<\/div>\n\n\n\n

ArrayList\u548cLinkedList\u7684\u533a\u522b<\/strong><\/p>\n\n\n\n

\u4e24\u8005\u5e95\u5c42\u6570\u636e\u7ed3\u6784\u4e0d\u540c\uff0cArrayList\u5e95\u5c42\u57fa\u4e8e\u6570\u7ec4\u5b9e\u73b0\uff0cLinkedList\u5e95\u5c42\u57fa\u4e8e\u94fe\u8868\u5b9e\u73b0<\/p>\n\n\n\n

\u7531\u4e8e\u5e95\u5c42\u4e0d\u540c\uff0c\u9002\u7528\u573a\u666f\u4e5f\u4e0d\u540c\uff0cArrayList\u9002\u5408\u968f\u673a\u67e5\u627e\uff0cLinkedList\u9002\u5408\u5220\u9664\u548c\u6dfb\u52a0\u8f83\u591a\u7684\u573a\u666f<\/p>\n\n\n\n

\u4e24\u8005\u90fd\u5b9e\u73b0\u4e86List\u63a5\u53e3\uff0c\u4f46LinkedList\u8fd8\u5b9e\u73b0\u4e86Deque\u63a5\u53e3\uff0c\u6240\u4ee5\u53ef\u4ee5\u5f53\u4f5c\u961f\u5217\u4f7f\u7528<\/p>\n\n\n\n

<\/div>\n\n\n\n

Jdk1.7\u5230Jdk1.8 HashMap\u7684\u53d8\u5316<\/strong><\/p>\n\n\n\n

    \n
  1. 1.7\u4e2d\u5e95\u5c42\u4e3a\u6570\u7ec4+\u94fe\u8868\uff0c1.8\u4e2d\u4e3a\u6570\u7ec4+\u94fe\u8868+\u7ea2\u9ed1\u6811\uff0c\u76ee\u7684\u662f\u63d0\u9ad8\u63d2\u5165\u548c\u67e5\u8be2\u6574\u4f53\u6548\u7387<\/li>\n\n\n\n
  2. 1.7\u94fe\u8868\u63d2\u5165\u662f\u5934\u63d2\u6cd5\uff0c1.8\u4e3a\u5c3e\u63d2\u6cd5\uff0c\u56e0\u4e3a1.8\u4e2d\u63d2\u5165key\u548cvalue\u9700\u8981\u5224\u65ad\u5217\u8868\u5143\u7d20\u4e2a\u6570\uff0c\u9700\u8981\u904d\u5386\u94fe\u8868\uff0c\u6240\u4ee5\u76f4\u63a5\u4f7f\u7528\u5c3e\u63d2\u6cd5\u3002<\/li>\n\n\n\n
  3. 1.7\u4e2d\u54c8\u5e0c\u7b97\u6cd5\u6bd4\u8f83\u590d\u6742\uff0c\u5b58\u5728\u5404\u79cd\u53f3\u79fb\u4e0e\u5f02\u6216\u8fd0\u7b97\uff0c1.8\u8fdb\u884c\u4e86\u7b80\u5316<\/li>\n<\/ol>\n\n\n\n
    <\/div>\n\n\n\n

    \u6df1\u62f7\u8d1d\u4e0e\u6d45\u62f7\u8d1d<\/strong><\/p>\n\n\n\n

    \u6df1\u62f7\u8d1d\u548c\u6d45\u62f7\u8d1d\u6307\u5bf9\u8c61\u7684\u62f7\u8d1d\uff0c\u4e00\u4e2a\u5bf9\u8c61\u5b58\u5728\u4e24\u79cd\u7c7b\u578b\u7684\u5c5e\u6027\uff0c\u4e00\u79cd\u662f\u57fa\u672c\u6570\u636e\u7c7b\u578b\uff0c\u4e00\u79cd\u662f\u5b9e\u4f8b\u5bf9\u8c61\u7684\u5f15\u7528\u3002<\/p>\n\n\n\n

    \u6d45\u62f7\u8d1d\u6307\u53ea\u4f1a\u62f7\u8d1d\u57fa\u672c\u6570\u636e\u7c7b\u578b\u7684\u503c\uff0c\u4ee5\u53ca\u5b9e\u4f8b\u5bf9\u8c61\u7684\u5f15\u7528\u5730\u5740\uff0c\u5e76\u4e0d\u4f1a\u590d\u5236\u5f15\u7528\u5bf9\u8c61\u7684\u503c\uff0c\u5373\u62f7\u8d1d\u51fa\u6765\u7684\u5bf9\u8c61\uff0c\u5185\u90e8\u5b9e\u4f8b\u5bf9\u8c61\u6307\u5411\u540c\u4e00\u4e2a\u5bf9\u8c61\u3002<\/p>\n\n\n\n

    \u6df1\u62f7\u8d1d\u4e0d\u4ec5\u4f1a\u62f7\u8d1d\u57fa\u672c\u6570\u636e\u7c7b\u578b\uff0c\u4e5f\u4f1a\u9488\u5bf9\u5b9e\u4f8b\u5bf9\u8c61\u7684\u5f15\u7528\u5730\u5740\u6240\u6307\u5411\u7684\u5bf9\u8c61\u8fdb\u884c\u590d\u5236\uff0c\u5373\u6df1\u62f7\u8d1d\u51fa\u6765\u7684\u5bf9\u8c61\uff0c\u5185\u90e8\u5b9e\u4f8b\u5bf9\u8c61\u6307\u5411\u4e0d\u662f\u540c\u4e00\u4e2a\u5bf9\u8c61\u3002<\/p>\n\n\n\n

    <\/div>\n\n\n\n

    HashMap\u7684\u6269\u5bb9\u673a\u5236<\/strong><\/p>\n\n\n\n

    HashMap\u7684\u9ed8\u8ba4\u5bb9\u91cf\u4e3a16\uff0c\u9ed8\u8ba4\u7684\u8d1f\u8f7d\u56e0\u5b50\u4e3a0.75\uff0c\u5f53HashMap\u4e2d\u5143\u7d20\u4e2a\u6570\u8d85\u8fc7\u5bb9\u91cf\u4e58\u4ee5\u8d1f\u8f7d\u56e0\u5b50\u7684\u4e2a\u6570\u65f6\uff0c\u5c31\u521b\u5efa\u4e00\u4e2a\u5927\u5c0f\u4e3a\u524d\u4e00\u6b21\u4e24\u500d\u7684\u65b0\u6570\u7ec4\uff0c\u518d\u5c06\u539f\u6765\u6570\u7ec4\u4e2d\u7684\u6570\u636e\u590d\u5236\u5230\u65b0\u6570\u7ec4\u4e2d\u3002\u5f53\u6570\u7ec4\u957f\u5ea6\u5230\u8fbe64\u4e14\u94fe\u8868\u957f\u5ea6\u5927\u4e8e8\u65f6\uff0c\u94fe\u8868\u8f6c\u4e3a\u7ea2\u9ed1\u6811<\/p>\n\n\n\n

    <\/div>\n\n\n\n

    \u60f3\u8981\u7ebf\u7a0b\u5b89\u5168\u7684HashMap\u600e\u4e48\u529e\uff1f<\/strong><\/p>\n\n\n\n

    \uff081\uff09\u4f7f\u7528ConcurrentHashMap<\/p>\n\n\n\n

    \uff082\uff09\u4f7f\u7528HashTable<\/p>\n\n\n\n

    \uff083\uff09Collections.synchronizedHashMap()\u65b9\u6cd5<\/p>\n\n\n\n

    <\/div>\n\n\n\n

    ConcurrentHashMap\u539f\u5982\u4f55\u4fdd\u8bc1\u7684\u7ebf\u7a0b\u5b89\u5168\uff1f<\/strong><\/p>\n\n\n\n

    JDK1.7:\u4f7f\u7528\u5206\u6bb5\u9501\uff0c\u5c06\u4e00\u4e2aMap\u5206\u4e3a\u4e8616\u4e2a\u6bb5\uff0c\u6bcf\u4e2a\u6bb5\u90fd\u662f\u4e00\u4e2a\u5c0f\u7684hashmap\uff0c\u6bcf\u6b21\u64cd\u4f5c\u53ea\u5bf9\u5176\u4e2d\u4e00\u4e2a\u6bb5\u52a0\u9501<\/p>\n\n\n\n

    JDK1.8:\u91c7\u7528CAS+Synchronized\u4fdd\u8bc1\u7ebf\u7a0b\u5b89\u5168\uff0c\u6bcf\u6b21\u63d2\u5165\u6570\u636e\u65f6\u5224\u65ad\u5728\u5f53\u524d\u6570\u7ec4\u4e0b\u6807\u662f\u5426\u662f\u7b2c\u4e00\u6b21\u63d2\u5165\uff0c\u662f\u5c31\u901a\u8fc7CAS\u65b9\u5f0f\u63d2\u5165\uff0c\u7136\u540e\u5224\u65adf.hash\u662f\u5426=-1\uff0c\u662f\u7684\u8bdd\u5c31\u8bf4\u660e\u5176\u4ed6\u7ebf\u7a0b\u6b63\u5728\u8fdb\u884c\u6269\u5bb9\uff0c\u5f53\u524d\u7ebf\u7a0b\u4e5f\u4f1a\u53c2\u4e0e\u6269\u5bb9\uff1b\u5220\u9664\u65b9\u6cd5\u7528\u4e86synchronized\u4fee\u9970\uff0c\u4fdd\u8bc1\u5e76\u53d1\u4e0b\u79fb\u9664\u5143\u7d20\u5b89\u5168<\/p>\n\n\n\n

    <\/div>\n\n\n\n

    HashTable\u4e0eHashMap\u7684\u533a\u522b<\/strong><\/p>\n\n\n\n

    \uff081\uff09HashTable\u7684\u6bcf\u4e2a\u65b9\u6cd5\u90fd\u7528synchronized\u4fee\u9970\uff0c\u56e0\u6b64\u662f\u7ebf\u7a0b\u5b89\u5168\u7684\uff0c\u4f46\u540c\u65f6\u8bfb\u5199\u6548\u7387\u5f88\u4f4e<\/p>\n\n\n\n

    \uff082\uff09HashTable\u7684Key\u4e0d\u5141\u8bb8\u4e3anull<\/p>\n\n\n\n

    \uff083\uff09HashTable\u53ea\u5bf9key\u8fdb\u884c\u4e00\u6b21hash\uff0cHashMap\u8fdb\u884c\u4e86\u4e24\u6b21Hash<\/p>\n\n\n\n

    \uff084\uff09HashTable\u5e95\u5c42\u4f7f\u7528\u7684\u6570\u7ec4\u52a0\u94fe\u8868<\/p>\n\n\n\n

    <\/div>\n\n\n\n

    \u5982\u4f55\u4fdd\u8bc1ArrayList\u7684\u7ebf\u7a0b\u5b89\u5168\uff1f<\/strong><\/p>\n\n\n\n

    \uff081\uff09\u4f7f\u7528collentions.synchronizedList\uff08\uff09\u65b9\u6cd5\u4e3aArrayList\u52a0\u9501<\/p>\n\n\n\n

    \uff082\uff09\u4f7f\u7528Vector\uff0cVector\u5e95\u5c42\u4e0eArraylist\u76f8\u540c\uff0c\u4f46\u662f\u6bcf\u4e2a\u65b9\u6cd5\u90fd\u7531synchronized\u4fee\u9970\uff0c\u901f\u5ea6\u5f88\u6162<\/p>\n\n\n\n

    \uff083\uff09\u4f7f\u7528juc\u4e0b\u7684CopyOnWriterArrayList\uff0c\u8be5\u7c7b\u5b9e\u73b0\u4e86\u8bfb\u64cd\u4f5c\u4e0d\u52a0\u9501\uff0c\u5199\u64cd\u4f5c\u65f6\u4e3alist\u521b\u5efa\u4e00\u4e2a\u526f\u672c\uff0c\u671f\u95f4\u5176\u5b83\u7ebf\u7a0b\u8bfb\u53d6\u7684\u90fd\u662f\u539f\u672clist\uff0c\u5199\u64cd\u4f5c\u90fd\u5728\u526f\u672c\u4e2d\u8fdb\u884c\uff0c\u5199\u5165\u5b8c\u6210\u540e\uff0c\u518d\u5c06\u6307\u9488\u6307\u5411\u526f\u672c\u3002<\/p>\n\n\n\n

    <\/div>\n\n\n\n

    \u9762\u5411\u5bf9\u8c61\u548c\u9762\u5411\u8fc7\u7a0b\u7684\u533a\u522b<\/strong><\/p>\n\n\n\n

    \u9762\u5411\u5bf9\u8c61\u6709\u5c01\u88c5\u3001\u7ee7\u627f\u3001\u591a\u6001\u6027\u7684\u7279\u6027\uff0c\u6240\u4ee5\u76f8\u6bd4\u9762\u5411\u8fc7\u7a0b\u6613\u7ef4\u62a4\u3001\u6613\u590d\u7528\u3001\u6613\u6269\u5c55\uff0c\u4f46\u662f\u56e0\u4e3a\u7c7b\u8c03\u7528\u65f6\u8981\u5b9e\u4f8b\u5316\uff0c\u6240\u4ee5\u5f00\u9500\u5927\u6027\u80fd\u6bd4\u9762\u5411\u8fc7\u7a0b\u4f4e<\/p>\n\n\n\n

    <\/div>\n\n\n\n

    \u591a\u6001\u7684\u4f5c\u7528<\/strong><\/p>\n\n\n\n

    \u591a\u6001\u7684\u5b9e\u73b0\u8981\u6709\u7ee7\u627f\u3001\u91cd\u5199\uff0c\u7236\u7c7b\u5f15\u7528\u6307\u5411\u5b50\u7c7b\u5bf9\u8c61\u3002\u5b83\u7684\u597d\u5904\u662f\u53ef\u4ee5\u6d88\u9664\u7c7b\u578b\u4e4b\u95f4\u7684\u8026\u5408\u5173\u7cfb\uff0c\u589e\u52a0\u7c7b\u7684\u53ef\u6269\u5145\u6027\u548c\u7075\u6d3b\u6027\u3002<\/p>\n\n\n\n

    <\/div>\n\n\n\n

    \u4ec0\u4e48\u662f\u53cd\u5c04<\/strong><\/p>\n\n\n\n

    \u53cd\u5c04\u662f\u901a\u8fc7\u83b7\u53d6\u7c7b\u7684class\u5bf9\u8c61\uff0c\u7136\u540e\u52a8\u6001\u7684\u83b7\u53d6\u5230\u8fd9\u4e2a\u7c7b\u7684\u5185\u90e8\u7ed3\u6784\uff0c\u52a8\u6001\u7684\u53bb\u64cd\u4f5c\u7c7b\u7684\u5c5e\u6027\u548c\u65b9\u6cd5\u3002
    \u5e94\u7528\u573a\u666f\u6709\uff1a\u8981\u64cd\u4f5c\u6743\u9650\u4e0d\u591f\u7684\u7c7b\u5c5e\u6027\u548c\u65b9\u6cd5\u65f6\u3001\u5b9e\u73b0\u81ea\u5b9a\u4e49\u6ce8\u89e3\u65f6\u3001\u52a8\u6001\u52a0\u8f7d\u7b2c\u4e09\u65b9jar\u5305\u65f6\u3001\u6309\u9700\u52a0\u8f7d\u7c7b\uff0c\u8282\u7701\u7f16\u8bd1\u548c\u521d\u59cb\u5316\u65f6\u95f4\uff1b
    \u83b7\u53d6class\u5bf9\u8c61\u7684\u65b9\u6cd5\u6709\uff1aclass.forName(\u7c7b\u8def\u5f84)\uff0c\u7c7b.class()\uff0c\u5bf9\u8c61\u7684getClass\uff08\uff09<\/p>\n\n\n\n

    <\/div>\n\n\n\n

    Java\u521b\u5efa\u5bf9\u8c61\u5f97\u4e94\u79cd\u65b9\u5f0f?<\/strong><\/p>\n\n\n\n

    (1)new\u5173\u952e\u5b57   (2)Class.newInstance  (3)Constructor.newInstance<\/p>\n\n\n\n

    (4)Clone\u65b9\u6cd5   (5)\u53cd\u5e8f\u5217\u5316<\/p>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"spay_email":"","footnotes":""},"categories":[15],"tags":[],"class_list":["post-1326","post","type-post","status-publish","format-standard","hentry","category-15"],"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/fireinsect.top\/index.php\/wp-json\/wp\/v2\/posts\/1326"}],"collection":[{"href":"https:\/\/fireinsect.top\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fireinsect.top\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fireinsect.top\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fireinsect.top\/index.php\/wp-json\/wp\/v2\/comments?post=1326"}],"version-history":[{"count":7,"href":"https:\/\/fireinsect.top\/index.php\/wp-json\/wp\/v2\/posts\/1326\/revisions"}],"predecessor-version":[{"id":1335,"href":"https:\/\/fireinsect.top\/index.php\/wp-json\/wp\/v2\/posts\/1326\/revisions\/1335"}],"wp:attachment":[{"href":"https:\/\/fireinsect.top\/index.php\/wp-json\/wp\/v2\/media?parent=1326"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fireinsect.top\/index.php\/wp-json\/wp\/v2\/categories?post=1326"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fireinsect.top\/index.php\/wp-json\/wp\/v2\/tags?post=1326"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}