{"id":65446,"date":"2025-05-03T13:34:06","date_gmt":"2025-05-03T05:34:06","guid":{"rendered":"https:\/\/fwq.ai\/blog\/65446\/"},"modified":"2025-05-03T13:34:06","modified_gmt":"2025-05-03T05:34:06","slug":"java%e6%95%b0%e7%bb%84%e6%80%8e%e4%b9%88%e8%ae%be%e7%a9%ba%e5%80%bc-2","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/65446\/","title":{"rendered":"java\u6570\u7ec4\u600e\u4e48\u8bbe\u7a7a\u503c"},"content":{"rendered":"

\n java \u6570\u7ec4\u9ed8\u8ba4\u4e3a\u7a7a\uff0c\u82e5\u8981\u660e\u786e\u8bbe\u4e3a\u7a7a\u503c\uff0c\u53ef\u91c7\u7528\u4ee5\u4e0b\u65b9\u6cd5\uff1a\u58f0\u660e\u5e76\u521d\u59cb\u5316\u6570\u7ec4\u4e3a null\u4f7f\u7528 arrays.fill() \u65b9\u6cd5\u586b\u5145\u6570\u7ec4\u904d\u5386\u6570\u7ec4\u5e76\u5c06\u5176\u5143\u7d20\u8bbe\u7f6e\u4e3a null\u4f7f\u7528 system.gc() \u65b9\u6cd5\u63d0\u793a\u5783\u573e\u56de\u6536\u5668\u91ca\u653e\u5185\u5b58\n<\/p><\/blockquote>\n

\"java\u6570\u7ec4\u600e\u4e48\u8bbe\u7a7a\u503c\u63d2\u56fe\"<\/p>\n

\u5982\u4f55\u5c06 Java \u6570\u7ec4\u8bbe\u4e3a\u7a7a\u503c<\/strong><\/p>\n

Java \u4e2d\u7684\u6570\u7ec4\u9ed8\u8ba4\u521d\u59cb\u5316\u4e3a null\uff0c\u8fd9\u610f\u5473\u7740\u5b83\u4eec\u6ca1\u6709\u5f15\u7528\u4efb\u4f55\u5bf9\u8c61\u3002\u8981\u660e\u786e\u5c06\u6570\u7ec4\u8bbe\u4e3a\u7a7a\u503c\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u65b9\u6cd5\uff1a<\/p>\n

1. \u58f0\u660e\u5e76\u521d\u59cb\u5316\u6570\u7ec4\u4e3a null<\/strong><\/p>\n

int[] numbers = null;<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
2. \u4f7f\u7528 Arrays.fill() \u65b9\u6cd5<\/strong><\/p>\n
\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n
int[] numbers = new int[10];\nArrays.fill(numbers, 0); \/\/ \u7528 0 \u586b\u5145\u6570\u7ec4<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
3. \u904d\u5386\u6570\u7ec4\u5e76\u5c06\u5176\u5143\u7d20\u8bbe\u7f6e\u4e3a null<\/strong><\/p>\n
int[] numbers = new int[10];\nfor (int i = 0; i < numbers.length; i++) {\n    numbers[i] = null;\n}<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
4. \u4f7f\u7528 System.gc() \u65b9\u6cd5<\/strong><\/p>\n
int[] numbers = new int[10];\nSystem.gc(); \/\/ \u63d0\u793a\u5783\u573e\u56de\u6536\u5668\u91ca\u653e\u6570\u7ec4\u5185\u5b58<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u6ce8\u610f\uff1a<\/p>\n
    \n
  • \u7b2c\u4e00\u79cd\u65b9\u6cd5\u662f\u6700\u76f4\u63a5\u7684\u65b9\u6cd5\uff0c\u4f46\u53ef\u80fd\u4f1a\u5bfc\u81f4\u7a7a\u6307\u9488\u5f02\u5e38\uff0c\u56e0\u4e3a\u6570\u7ec4\u6ca1\u6709\u5f15\u7528\u4efb\u4f55\u5bf9\u8c61\u3002<\/li>\n
  • \u7b2c\u4e8c\u79cd\u65b9\u6cd5\u4f7f\u7528 Arrays.fill() \u65b9\u6cd5\uff0c\u8be5\u65b9\u6cd5\u4f1a\u5c06\u6570\u7ec4\u5143\u7d20\u8bbe\u7f6e\u4e3a\u6307\u5b9a\u503c\uff0c\u4f46\u4e0d\u4f1a\u91ca\u653e\u6570\u7ec4\u5185\u5b58\u3002<\/li>\n
  • \u7b2c\u4e09\u79cd\u65b9\u6cd5\u662f\u663e\u5f0f\u5730\u5c06\u6570\u7ec4\u5143\u7d20\u8bbe\u7f6e\u4e3a null\uff0c\u8fd9\u9700\u8981\u989d\u5916\u7684\u4ee3\u7801\uff0c\u4f46\u53ef\u4ee5\u786e\u4fdd\u6570\u7ec4\u4e2d\u6ca1\u6709\u5f15\u7528\u5bf9\u8c61\u3002<\/li>\n
  • \u7b2c\u56db\u79cd\u65b9\u6cd5\u4f7f\u7528 System.gc() \u65b9\u6cd5\uff0c\u8be5\u65b9\u6cd5\u63d0\u793a\u56de\u6536\u6570\u7ec4\u5185\u5b58\uff0c\u4f46\u4e0d\u80fd\u4fdd\u8bc1\u7acb\u5373\u56de\u6536\u3002<\/li>\n<\/ul>\n
    \u4ee5\u4e0a\u5c31\u662fjava\u6570\u7ec4\u600e\u4e48\u8bbe\u7a7a\u503c\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8IDCBABY\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"
    java \u6570\u7ec4\u9ed8\u8ba4\u4e3a\u7a7a\uff0c\u82e5\u8981\u660e\u786e\u8bbe\u4e3a\u7a7a\u503c\uff0c\u53ef\u91c7\u7528\u4ee5\u4e0b\u65b9\u6cd5\uff1a\u58f0\u660e\u5e76\u521d\u59cb\u5316\u6570\u7ec4\u4e3a null\u4f7f\u7528 arrays.fill() \u65b9\u6cd5\u586b\u5145\u6570\u7ec4\u904d\u5386\u6570\u7ec4\u5e76\u5c06\u5176\u5143\u7d20\u8bbe\u7f6e\u4e3a null\u4f7f\u7528 system.gc() \u65b9\u6cd5\u63d0\u793a\u5783\u573e\u56de\u6536\u5668\u91ca\u653e\u5185\u5b58 \u5982\u4f55\u5c06 Java \u6570\u7ec4\u8bbe\u4e3a\u7a7a\u503c Java \u4e2d\u7684\u6570\u7ec4\u9ed8\u8ba4\u521d\u59cb\u5316\u4e3a null\uff0c\u8fd9\u610f\u5473\u7740\u5b83\u4eec\u6ca1\u6709\u5f15\u7528\u4efb\u4f55\u5bf9\u8c61\u3002\u8981\u660e\u786e\u5c06\u6570\u7ec4\u8bbe\u4e3a\u7a7a\u503c\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u65b9\u6cd5\uff1a 1. \u58f0\u660e\u5e76\u521d\u59cb\u5316\u6570\u7ec4\u4e3a null int[] numbers = null; \u767b\u5f55\u540e\u590d\u5236 2. \u4f7f\u7528 Arrays.fill() \u65b9\u6cd5 \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b int[] numbers = new int[10]; Arrays.fill(numbers, 0); \/\/ \u7528 0 \u586b\u5145\u6570\u7ec4 \u767b\u5f55\u540e\u590d\u5236 3. \u904d\u5386\u6570\u7ec4\u5e76\u5c06\u5176\u5143\u7d20\u8bbe\u7f6e\u4e3a null int[] numbers = new int[10]; for (int i = 0; i < numbers.length; […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16],"tags":[],"class_list":["post-65446","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/65446","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/comments?post=65446"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/65446\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=65446"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=65446"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=65446"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}