{"id":65551,"date":"2025-05-03T17:13:41","date_gmt":"2025-05-03T09:13:41","guid":{"rendered":"https:\/\/fwq.ai\/blog\/65551\/"},"modified":"2025-05-03T17:13:41","modified_gmt":"2025-05-03T09:13:41","slug":"java%e5%8a%a8%e6%80%81%e6%95%b0%e7%bb%84%e6%80%8e%e4%b9%88%e6%90%9e-2","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/65551\/","title":{"rendered":"java\u52a8\u6001\u6570\u7ec4\u600e\u4e48\u641e"},"content":{"rendered":"

\n java\u4e2d\u7684\u52a8\u6001\u6570\u7ec4\uff08arraylist\uff09\u662f\u4e00\u79cd\u53ef\u81ea\u52a8\u8c03\u6574\u5927\u5c0f\u7684\u6570\u636e\u7ed3\u6784\u3002\u521b\u5efaarraylist\uff1aarraylist list = new arraylist()\u6dfb\u52a0\u5143\u7d20\uff1alist.add(element)\u83b7\u53d6\u5143\u7d20\uff1atype element = list.get(index)\u5220\u9664\u5143\u7d20\uff1alist.remove(index)\u6216list.remove(element)\n<\/p><\/blockquote>\n

\"java\u52a8\u6001\u6570\u7ec4\u600e\u4e48\u641e\u63d2\u56fe\"<\/p>\n

Java \u52a8\u6001\u6570\u7ec4<\/strong><\/p>\n

\u52a8\u6001\u6570\u7ec4\u662f\u4e00\u79cd\u53ef\u4ee5\u6839\u636e\u9700\u8981\u81ea\u52a8\u8c03\u6574\u5927\u5c0f\u7684\u6570\u636e\u7ed3\u6784\u3002\u5728 Java \u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528 ArrayList \u6765\u521b\u5efa\u52a8\u6001\u6570\u7ec4\u3002<\/p>\n

\u521b\u5efa ArrayList<\/h3>\n

\u8981\u521b\u5efa ArrayList\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u8bed\u6cd5\uff1a<\/p>\n

ArrayList<Type> list = new ArrayList<>();<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u5176\u4e2d\uff1a<\/p>\n
\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n
    \n
  • Type \u662f\u8981\u5b58\u50a8\u5728\u6570\u7ec4\u4e2d\u7684\u5143\u7d20\u7c7b\u578b\u3002<\/li>\n
  • list \u662f ArrayList \u53d8\u91cf\u7684\u540d\u79f0\u3002<\/li>\n<\/ul>\n
    \u6dfb\u52a0\u5143\u7d20<\/h3>\n
    \u8981\u5411 ArrayList \u4e2d\u6dfb\u52a0\u5143\u7d20\uff0c\u53ef\u4ee5\u4f7f\u7528 add() \u65b9\u6cd5\uff1a<\/p>\n
    list.add(element);<\/pre>\n
     \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
    \u5176\u4e2d\uff1a<\/p>\n
    \u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n
      \n
    • element \u662f\u8981\u6dfb\u52a0\u7684\u5143\u7d20\u3002<\/li>\n<\/ul>\n
      \u83b7\u53d6\u5143\u7d20<\/h3>\n
      \u8981\u83b7\u53d6 ArrayList \u4e2d\u7684\u5143\u7d20\uff0c\u53ef\u4ee5\u4f7f\u7528 get() \u65b9\u6cd5\uff1a<\/p>\n
      Type element = list.get(index);<\/pre>\n
       \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
      \u5176\u4e2d\uff1a<\/p>\n
      \u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n
        \n
      • index \u662f\u8981\u83b7\u53d6\u7684\u5143\u7d20\u7684\u7d22\u5f15\u3002<\/li>\n<\/ul>\n
        \u5220\u9664\u5143\u7d20<\/h3>\n
        \u8981\u4ece ArrayList \u4e2d\u5220\u9664\u5143\u7d20\uff0c\u53ef\u4ee5\u4f7f\u7528 remove() \u65b9\u6cd5\uff1a<\/p>\n
        list.remove(index);<\/pre>\n
         \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
        \u6216\u8005\uff1a<\/p>\n
        list.remove(element);<\/pre>\n
         \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
        \u5176\u4e2d\uff1a<\/p>\n
        \u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n
          \n
        • index \u662f\u8981\u5220\u9664\u7684\u5143\u7d20\u7684\u7d22\u5f15\u3002<\/li>\n
        • element \u662f\u8981\u5220\u9664\u7684\u5143\u7d20\u3002<\/li>\n<\/ul>\n
          \u4f18\u70b9<\/h3>\n
          \u4f7f\u7528 ArrayList \u4f5c\u4e3a\u52a8\u6001\u6570\u7ec4\u7684\u4e3b\u8981\u4f18\u70b9\u5305\u62ec\uff1a<\/p>\n
            \n
          •  \u81ea\u52a8\u8c03\u6574\u5927\u5c0f\uff1a<\/strong>ArrayList \u4f1a\u6839\u636e\u9700\u8981\u81ea\u52a8\u8c03\u6574\u5927\u5c0f\uff0c\u4e0d\u9700\u8981\u624b\u52a8\u6307\u5b9a\u5927\u5c0f\u3002<\/li>\n
          •  \u7c7b\u578b\u5b89\u5168\uff1a<\/strong>ArrayList \u662f\u7c7b\u578b\u5b89\u5168\u7684\uff0c\u8fd9\u610f\u5473\u7740\u5b83\u53ea\u80fd\u5b58\u50a8\u6307\u5b9a\u7c7b\u578b\u7684\u5143\u7d20\u3002<\/li>\n
          •  \u6613\u4e8e\u4f7f\u7528\uff1a<\/strong>ArrayList \u63d0\u4f9b\u4e86\u4e00\u7cfb\u5217\u6613\u4e8e\u4f7f\u7528\u7684 API\uff0c\u53ef\u4ee5\u8f7b\u677e\u5730\u6dfb\u52a0\u3001\u83b7\u53d6\u548c\u5220\u9664\u5143\u7d20\u3002<\/li>\n<\/ul>\n
            \u6ce8\u610f<\/h3>\n
              \n
            • ArrayList \u4e0d\u662f\u7ebf\u7a0b\u5b89\u5168\u7684\uff0c\u8fd9\u610f\u5473\u7740\u5728\u591a\u7ebf\u7a0b\u73af\u5883\u4e2d\u4f7f\u7528\u65f6\u9700\u8981\u6ce8\u610f\u540c\u6b65\u3002<\/li>\n
            • ArrayList \u5e95\u5c42\u662f\u4e00\u4e2a\u6570\u7ec4\uff0c\u56e0\u6b64\u63d2\u5165\u6216\u5220\u9664\u5143\u7d20\u65f6\u53ef\u80fd\u4f1a\u5bfc\u81f4\u6570\u7ec4\u91cd\u65b0\u5206\u914d\uff0c\u4ece\u800c\u5bfc\u81f4\u6027\u80fd\u95ee\u9898\u3002<\/li>\n<\/ul>\n
              \u4ee5\u4e0a\u5c31\u662fjava\u52a8\u6001\u6570\u7ec4\u600e\u4e48\u641e\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\u4e2d\u7684\u52a8\u6001\u6570\u7ec4\uff08arraylist\uff09\u662f\u4e00\u79cd\u53ef\u81ea\u52a8\u8c03\u6574\u5927\u5c0f\u7684\u6570\u636e\u7ed3\u6784\u3002\u521b\u5efaarraylist\uff1aarraylist list = new arraylist()\u6dfb\u52a0\u5143\u7d20\uff1alist.add(element)\u83b7\u53d6\u5143\u7d20\uff1atype element = list.get(index)\u5220\u9664\u5143\u7d20\uff1alist.remove(index)\u6216list.remove(element) Java \u52a8\u6001\u6570\u7ec4 \u52a8\u6001\u6570\u7ec4\u662f\u4e00\u79cd\u53ef\u4ee5\u6839\u636e\u9700\u8981\u81ea\u52a8\u8c03\u6574\u5927\u5c0f\u7684\u6570\u636e\u7ed3\u6784\u3002\u5728 Java \u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528 ArrayList \u6765\u521b\u5efa\u52a8\u6001\u6570\u7ec4\u3002 \u521b\u5efa ArrayList \u8981\u521b\u5efa ArrayList\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u8bed\u6cd5\uff1a ArrayList<Type> list = new ArrayList<>(); \u767b\u5f55\u540e\u590d\u5236 \u5176\u4e2d\uff1a \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b Type \u662f\u8981\u5b58\u50a8\u5728\u6570\u7ec4\u4e2d\u7684\u5143\u7d20\u7c7b\u578b\u3002 list \u662f ArrayList \u53d8\u91cf\u7684\u540d\u79f0\u3002 \u6dfb\u52a0\u5143\u7d20 \u8981\u5411 ArrayList \u4e2d\u6dfb\u52a0\u5143\u7d20\uff0c\u53ef\u4ee5\u4f7f\u7528 add() \u65b9\u6cd5\uff1a list.add(element); \u767b\u5f55\u540e\u590d\u5236 \u5176\u4e2d\uff1a \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b element \u662f\u8981\u6dfb\u52a0\u7684\u5143\u7d20\u3002 \u83b7\u53d6\u5143\u7d20 \u8981\u83b7\u53d6 ArrayList \u4e2d\u7684\u5143\u7d20\uff0c\u53ef\u4ee5\u4f7f\u7528 get() \u65b9\u6cd5\uff1a Type element = list.get(index); […]<\/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-65551","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/65551","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=65551"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/65551\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=65551"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=65551"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=65551"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}