{"id":65987,"date":"2025-05-03T12:05:59","date_gmt":"2025-05-03T04:05:59","guid":{"rendered":"https:\/\/fwq.ai\/blog\/65987\/"},"modified":"2025-05-03T12:05:59","modified_gmt":"2025-05-03T04:05:59","slug":"java%e4%b8%ad%e6%80%8e%e4%b9%88%e6%8a%8a%e6%95%b0%e7%bb%84%e5%85%83%e7%b4%a0%e6%b6%88%e9%99%a4-2","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/65987\/","title":{"rendered":"java\u4e2d\u600e\u4e48\u628a\u6570\u7ec4\u5143\u7d20\u6d88\u9664"},"content":{"rendered":"

\n \u6d88\u9664 java \u6570\u7ec4\u4e2d\u5143\u7d20\u6700\u7b80\u5355\u7684\u65b9\u6cd5\uff1a\u76f4\u63a5\u5c06\u9700\u8981\u6d88\u9664\u7684\u5143\u7d20\u8d4b\u503c\u4e3a null\u3002\u4f7f\u7528 system.arraycopy() \u65b9\u6cd5\u521b\u5efa\u65b0\u6570\u7ec4\uff0c\u8df3\u8fc7\u8981\u6d88\u9664\u7684\u5143\u7d20\u3002\u4f7f\u7528 arraylist\uff0c\u53ef\u52a8\u6001\u8c03\u6574\u6570\u7ec4\u5927\u5c0f\u5e76\u5220\u9664\u5143\u7d20\u3002\n<\/p><\/blockquote>\n

\"java\u4e2d\u600e\u4e48\u628a\u6570\u7ec4\u5143\u7d20\u6d88\u9664\u63d2\u56fe\"<\/p>\n

\u5982\u4f55\u6d88\u9664 Java \u6570\u7ec4\u4e2d\u7684\u5143\u7d20<\/strong><\/p>\n

\u76f4\u63a5\u8d4b\u503c<\/strong><\/p>\n

\u6700\u7b80\u5355\u7684\u65b9\u6cd5\u662f\u76f4\u63a5\u5c06\u9700\u8981\u6d88\u9664\u7684\u5143\u7d20\u8d4b\u503c\u4e3a null\u3002\u4f8b\u5982\uff1a<\/p>\n

int[] myArray = {1, 2, 3, 4, 5};\nmyArray[2] = null;<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u8fd9\u5c06\u6d88\u9664\u6570\u7ec4\u4e2d\u7d22\u5f15\u4e3a 2 \u7684\u5143\u7d20\uff0c\u5c06\u5176\u66ff\u6362\u4e3a null\u3002<\/p>\n
\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n
\u4f7f\u7528 System.arraycopy() \u65b9\u6cd5<\/strong><\/p>\n
\u53e6\u4e00\u79cd\u65b9\u6cd5\u662f\u4f7f\u7528 System.arraycopy() \u65b9\u6cd5\u3002\u6b64\u65b9\u6cd5\u7528\u4e8e\u4ece\u6e90\u6570\u7ec4\u590d\u5236\u5143\u7d20\u5230\u76ee\u6807\u6570\u7ec4\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u6d88\u9664\u5143\u7d20\u3002\u4f8b\u5982\uff1a<\/p>\n
int[] myArray = {1, 2, 3, 4, 5};\nint[] newArray = new int[myArray.length - 1];\nSystem.arraycopy(myArray, 0, newArray, 0, 2);\nSystem.arraycopy(myArray, 3, newArray, 2, newArray.length - 2);<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u8fd9\u5c06\u521b\u5efa\u4e00\u4e2a\u65b0\u6570\u7ec4 newArray\uff0c\u5176\u4e2d\u7d22\u5f15\u4e3a 2 \u7684\u5143\u7d20\u88ab\u6d88\u9664\u3002<\/p>\n
\u4f7f\u7528 ArrayList<\/strong><\/p>\n
\u5982\u679c\u60a8\u9700\u8981\u5728\u8fd0\u884c\u65f6\u52a8\u6001\u8c03\u6574\u6570\u7ec4\u5927\u5c0f\uff0c\u53ef\u4ee5\u4f7f\u7528 ArrayList\u3002ArrayList \u662f\u4e00\u4e2a\u53ef\u53d8\u957f\u5ea6\u7684\u6570\u7ec4\uff0c\u5141\u8bb8\u60a8\u6dfb\u52a0\u3001\u5220\u9664\u548c\u63d2\u5165\u5143\u7d20\u3002\u4f8b\u5982\uff1a<\/p>\n
ArrayList<Integer> myList = new ArrayList<>();\nmyList.add(1);\nmyList.add(2);\nmyList.add(3);\nmyList.add(4);\nmyList.add(5);\nmyList.remove(2);<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u8fd9\u5c06\u5728\u8fd0\u884c\u65f6\u6d88\u9664\u7d22\u5f15\u4e3a 2 \u7684\u5143\u7d20\u3002<\/p>\n
\u4ee5\u4e0a\u5c31\u662fjava\u4e2d\u600e\u4e48\u628a\u6570\u7ec4\u5143\u7d20\u6d88\u9664\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8IDCBABY\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"
\u6d88\u9664 java \u6570\u7ec4\u4e2d\u5143\u7d20\u6700\u7b80\u5355\u7684\u65b9\u6cd5\uff1a\u76f4\u63a5\u5c06\u9700\u8981\u6d88\u9664\u7684\u5143\u7d20\u8d4b\u503c\u4e3a null\u3002\u4f7f\u7528 system.arraycopy() \u65b9\u6cd5\u521b\u5efa\u65b0\u6570\u7ec4\uff0c\u8df3\u8fc7\u8981\u6d88\u9664\u7684\u5143\u7d20\u3002\u4f7f\u7528 arraylist\uff0c\u53ef\u52a8\u6001\u8c03\u6574\u6570\u7ec4\u5927\u5c0f\u5e76\u5220\u9664\u5143\u7d20\u3002 \u5982\u4f55\u6d88\u9664 Java \u6570\u7ec4\u4e2d\u7684\u5143\u7d20 \u76f4\u63a5\u8d4b\u503c \u6700\u7b80\u5355\u7684\u65b9\u6cd5\u662f\u76f4\u63a5\u5c06\u9700\u8981\u6d88\u9664\u7684\u5143\u7d20\u8d4b\u503c\u4e3a null\u3002\u4f8b\u5982\uff1a int[] myArray = {1, 2, 3, 4, 5}; myArray[2] = null; \u767b\u5f55\u540e\u590d\u5236 \u8fd9\u5c06\u6d88\u9664\u6570\u7ec4\u4e2d\u7d22\u5f15\u4e3a 2 \u7684\u5143\u7d20\uff0c\u5c06\u5176\u66ff\u6362\u4e3a null\u3002 \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b \u4f7f\u7528 System.arraycopy() \u65b9\u6cd5 \u53e6\u4e00\u79cd\u65b9\u6cd5\u662f\u4f7f\u7528 System.arraycopy() \u65b9\u6cd5\u3002\u6b64\u65b9\u6cd5\u7528\u4e8e\u4ece\u6e90\u6570\u7ec4\u590d\u5236\u5143\u7d20\u5230\u76ee\u6807\u6570\u7ec4\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u6d88\u9664\u5143\u7d20\u3002\u4f8b\u5982\uff1a int[] myArray = {1, 2, 3, 4, 5}; int[] newArray = new int[myArray.length – 1]; System.arraycopy(myArray, 0, newArray, 0, […]<\/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-65987","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/65987","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=65987"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/65987\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=65987"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=65987"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=65987"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}