{"id":34917,"date":"2024-11-26T15:20:56","date_gmt":"2024-11-26T07:20:56","guid":{"rendered":"https:\/\/fwq.ai\/blog\/34917\/"},"modified":"2024-11-26T15:20:56","modified_gmt":"2024-11-26T07:20:56","slug":"%e6%80%8e%e4%b9%88%e5%8a%a8%e6%80%81%e5%ae%9a%e4%b9%89%e4%b8%80%e4%b8%aa%e6%95%b0%e7%bb%84java","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/34917\/","title":{"rendered":"\u600e\u4e48\u52a8\u6001\u5b9a\u4e49\u4e00\u4e2a\u6570\u7ec4java"},"content":{"rendered":"

\n \u5982\u4f55\u5728 java \u4e2d\u52a8\u6001\u5b9a\u4e49\u6570\u7ec4\uff1fjava \u4e2d\u53ef\u4ee5\u4f7f\u7528 arraylist \u7c7b\uff0c\u9996\u5148\u5bfc\u5165\u5e93\uff0c\u521b\u5efa arraylist \u5bf9\u8c61\uff0c\u4f7f\u7528 add() \u65b9\u6cd5\u6dfb\u52a0\u5143\u7d20\uff0c\u4f7f\u7528 get() \u65b9\u6cd5\u83b7\u53d6\u5143\u7d20\uff0c\u4f7f\u7528 remove() \u65b9\u6cd5\u5220\u9664\u5143\u7d20\u3002\u4f18\u70b9\u662f\u52a8\u6001\u8c03\u6574\u5927\u5c0f\uff0c\u7f3a\u70b9\u662f\u9891\u7e41\u7684\u968f\u673a\u8bbf\u95ee\u64cd\u4f5c\u6027\u80fd\u4e0d\u5982\u4f20\u7edf\u6570\u7ec4\u3002\n<\/p><\/blockquote>\n

\"\u600e\u4e48\u52a8\u6001\u5b9a\u4e49\u4e00\u4e2a\u6570\u7ec4java\u63d2\u56fe\"<\/p>\n

\u5982\u4f55\u5728 Java \u4e2d\u52a8\u6001\u5b9a\u4e49\u6570\u7ec4<\/strong><\/p>\n

\u5728 Java \u4e2d\uff0c\u6570\u7ec4\u662f\u56fa\u5b9a\u5927\u5c0f\u7684\u6570\u636e\u7ed3\u6784\uff0c\u4e00\u65e6\u521b\u5efa\uff0c\u5176\u5927\u5c0f\u5c31\u4e0d\u80fd\u6539\u53d8\u3002\u7136\u800c\uff0c\u53ef\u4ee5\u4f7f\u7528\u52a8\u6001\u6570\u7ec4\uff08\u4e5f\u79f0\u4e3a\u5217\u8868\u6216\u5411\u91cf\uff09\u6765\u514b\u670d\u6b64\u9650\u5236\u3002\u52a8\u6001\u6570\u7ec4\u53ef\u4ee5\u5728\u8fd0\u884c\u65f6\u6839\u636e\u9700\u8981\u81ea\u52a8\u8c03\u6574\u5176\u5927\u5c0f\u3002<\/p>\n

\u4f7f\u7528 ArrayList \u521b\u5efa\u52a8\u6001\u6570\u7ec4<\/strong><\/p>\n

Java \u63d0\u4f9b\u4e86\u4e00\u4e2a\u540d\u4e3a ArrayList \u7684\u7c7b\uff0c\u53ef\u7528\u4e8e\u521b\u5efa\u52a8\u6001\u6570\u7ec4\u3002\u4ee5\u4e0b\u662f\u5982\u4f55\u4f7f\u7528 ArrayList \u52a8\u6001\u5b9a\u4e49\u4e00\u4e2a\u6570\u7ec4\uff1a<\/p>\n

\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n

    \n
  1. \u5bfc\u5165\u5e93\uff1a<\/strong><\/li>\n<\/ol>\n
    import java.util.ArrayList;<\/pre>\n
     \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
      \n
    1. \u521b\u5efa ArrayList \u5bf9\u8c61\uff1a<\/strong><\/li>\n<\/ol>\n
      ArrayList<\u6570\u636e\u7c7b\u578b> \u6570\u7ec4\u540d = new ArrayList<>();<\/pre>\n
       \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
      \u4f8b\u5982\uff1a\u521b\u5efa\u4e00\u4e2a\u5b58\u50a8\u6574\u6570\u7684\u52a8\u6001\u6570\u7ec4\uff1a<\/p>\n
      ArrayList<Integer> numbers = new ArrayList<>();<\/pre>\n
       \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
        \n
      1. \u6dfb\u52a0\u5143\u7d20\uff1a<\/strong><\/li>\n<\/ol>\n
        \u53ef\u4ee5\u4f7f\u7528 add() \u65b9\u6cd5\u5411\u52a8\u6001\u6570\u7ec4\u6dfb\u52a0\u5143\u7d20\uff1a<\/p>\n
        \u6570\u7ec4\u540d.add(\u5143\u7d20);<\/pre>\n
         \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
        \u4f8b\u5982\uff1a\u5411 numbers \u6570\u7ec4\u6dfb\u52a0\u5143\u7d20\uff1a<\/p>\n
        numbers.add(10);<\/pre>\n
         \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
          \n
        1. \u83b7\u53d6\u5143\u7d20\uff1a<\/strong><\/li>\n<\/ol>\n
          \u53ef\u4ee5\u4f7f\u7528 get() \u65b9\u6cd5\u83b7\u53d6\u52a8\u6001\u6570\u7ec4\u4e2d\u7684\u5143\u7d20\uff1a<\/p>\n
          \u6570\u7ec4\u540d.get(\u7d22\u5f15);<\/pre>\n
           \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
          \u4f8b\u5982\uff1a\u83b7\u53d6 numbers \u6570\u7ec4\u4e2d\u7b2c\u4e00\u4e2a\u5143\u7d20\uff1a<\/p>\n
          int number = numbers.get(0);<\/pre>\n
           \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
            \n
          1. \u5220\u9664\u5143\u7d20\uff1a<\/strong><\/li>\n<\/ol>\n
            \u53ef\u4ee5\u4f7f\u7528 remove() \u65b9\u6cd5\u4ece\u52a8\u6001\u6570\u7ec4\u4e2d\u5220\u9664\u5143\u7d20\uff1a<\/p>\n
            \u6570\u7ec4\u540d.remove(\u7d22\u5f15);<\/pre>\n
             \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
            \u4f8b\u5982\uff1a\u4ece numbers \u6570\u7ec4\u4e2d\u5220\u9664\u7b2c\u4e00\u4e2a\u5143\u7d20\uff1a<\/p>\n
            numbers.remove(0);<\/pre>\n
             \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
            \u4f18\u70b9<\/strong><\/p>\n
              \n
            • \u52a8\u6001\u8c03\u6574\u5927\u5c0f\uff0c\u65e0\u9700\u624b\u52a8\u7ba1\u7406\u5185\u5b58\u3002<\/li>\n
            • \u4f7f\u7528\u8d77\u6765\u7b80\u5355\u65b9\u4fbf\uff0c\u63d0\u4f9b\u4e86\u4e30\u5bcc\u7684 API\u3002<\/li>\n<\/ul>\n
              \u7f3a\u70b9<\/strong><\/p>\n
                \n
              • \u5bf9\u4e8e\u9891\u7e41\u7684\u968f\u673a\u8bbf\u95ee\u64cd\u4f5c\uff0c\u6027\u80fd\u4e0d\u5982\u4f20\u7edf\u6570\u7ec4\u3002<\/li>\n<\/ul>\n
                \u4ee5\u4e0a\u5c31\u662f\u600e\u4e48\u52a8\u6001\u5b9a\u4e49\u4e00\u4e2a\u6570\u7ec4java\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8\u7c73\u4e91\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"
                \u5982\u4f55\u5728 java \u4e2d\u52a8\u6001\u5b9a\u4e49\u6570\u7ec4\uff1fjava \u4e2d\u53ef\u4ee5\u4f7f\u7528 arraylist \u7c7b\uff0c\u9996\u5148\u5bfc\u5165\u5e93\uff0c\u521b\u5efa arraylist \u5bf9\u8c61\uff0c\u4f7f\u7528 add() \u65b9\u6cd5\u6dfb\u52a0\u5143\u7d20\uff0c\u4f7f\u7528 get() \u65b9\u6cd5\u83b7\u53d6\u5143\u7d20\uff0c\u4f7f\u7528 remove() \u65b9\u6cd5\u5220\u9664\u5143\u7d20\u3002\u4f18\u70b9\u662f\u52a8\u6001\u8c03\u6574\u5927\u5c0f\uff0c\u7f3a\u70b9\u662f\u9891\u7e41\u7684\u968f\u673a\u8bbf\u95ee\u64cd\u4f5c\u6027\u80fd\u4e0d\u5982\u4f20\u7edf\u6570\u7ec4\u3002 \u5982\u4f55\u5728 Java \u4e2d\u52a8\u6001\u5b9a\u4e49\u6570\u7ec4 \u5728 Java \u4e2d\uff0c\u6570\u7ec4\u662f\u56fa\u5b9a\u5927\u5c0f\u7684\u6570\u636e\u7ed3\u6784\uff0c\u4e00\u65e6\u521b\u5efa\uff0c\u5176\u5927\u5c0f\u5c31\u4e0d\u80fd\u6539\u53d8\u3002\u7136\u800c\uff0c\u53ef\u4ee5\u4f7f\u7528\u52a8\u6001\u6570\u7ec4\uff08\u4e5f\u79f0\u4e3a\u5217\u8868\u6216\u5411\u91cf\uff09\u6765\u514b\u670d\u6b64\u9650\u5236\u3002\u52a8\u6001\u6570\u7ec4\u53ef\u4ee5\u5728\u8fd0\u884c\u65f6\u6839\u636e\u9700\u8981\u81ea\u52a8\u8c03\u6574\u5176\u5927\u5c0f\u3002 \u4f7f\u7528 ArrayList \u521b\u5efa\u52a8\u6001\u6570\u7ec4 Java \u63d0\u4f9b\u4e86\u4e00\u4e2a\u540d\u4e3a ArrayList \u7684\u7c7b\uff0c\u53ef\u7528\u4e8e\u521b\u5efa\u52a8\u6001\u6570\u7ec4\u3002\u4ee5\u4e0b\u662f\u5982\u4f55\u4f7f\u7528 ArrayList \u52a8\u6001\u5b9a\u4e49\u4e00\u4e2a\u6570\u7ec4\uff1a \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b \u5bfc\u5165\u5e93\uff1a import java.util.ArrayList; \u767b\u5f55\u540e\u590d\u5236 \u521b\u5efa ArrayList \u5bf9\u8c61\uff1a ArrayList<\u6570\u636e\u7c7b\u578b> \u6570\u7ec4\u540d = new ArrayList<>(); \u767b\u5f55\u540e\u590d\u5236 \u4f8b\u5982\uff1a\u521b\u5efa\u4e00\u4e2a\u5b58\u50a8\u6574\u6570\u7684\u52a8\u6001\u6570\u7ec4\uff1a ArrayList<Integer> numbers = new ArrayList<>(); \u767b\u5f55\u540e\u590d\u5236 \u6dfb\u52a0\u5143\u7d20\uff1a \u53ef\u4ee5\u4f7f\u7528 add() \u65b9\u6cd5\u5411\u52a8\u6001\u6570\u7ec4\u6dfb\u52a0\u5143\u7d20\uff1a \u6570\u7ec4\u540d.add(\u5143\u7d20); […]<\/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-34917","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/34917","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=34917"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/34917\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=34917"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=34917"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=34917"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}