{"id":571,"date":"2024-04-13T15:27:31","date_gmt":"2024-04-13T07:27:31","guid":{"rendered":"http:\/\/mapleleaf666.vip\/?p=571"},"modified":"2024-04-13T15:32:44","modified_gmt":"2024-04-13T07:32:44","slug":"java%e6%80%bb%e7%bb%934-%e9%9b%86%e5%90%88","status":"publish","type":"post","link":"http:\/\/mapleleaf666.vip\/?p=571","title":{"rendered":"Java\u603b\u7ed3\uff084\uff09-\u96c6\u5408"},"content":{"rendered":"\n
\"Java<\/div><\/figure>\n\n\n\n

Collection<\/h2>\n\n\n\n
\"image-20240122153500884\"\/<\/div><\/figure>\n\n\n\n

\u5e38\u7528\u65b9\u6cd5\uff1a<\/p>\n\n\n\n

    \n
  • add(E e)\uff1a\u6dfb\u52a0\u6570\u636e<\/li>\n\n\n\n
  • clear()\uff1a\u6e05\u7a7a<\/li>\n\n\n\n
  • isEmpty()\uff1a\u5224\u7a7a<\/li>\n\n\n\n
  • remove(Object o)\uff1a\u79fb\u9664\u5355\u5b9e\u4f8b\u4e2a<\/li>\n\n\n\n
  • Contains(Object o)\uff1a\u5224\u65ad\u96c6\u5408\u662f\u5426\u5305\u542b\u67d0\u4e2a\u6570\u636e<\/li>\n\n\n\n
  • toArray()\uff1a\u96c6\u5408\u8f6c\u6570\u7ec4<\/li>\n<\/ul>\n\n\n\n

    ArrayList<\/h3>\n\n\n\n

    \u6269\u5bb9<\/h4>\n\n\n\n
      \n
    1. \u5229\u7528\u65e0\u53c2\u6784\u9020\u5668\u521b\u5efa\u65f6\uff0c\u5e95\u5c42\u9ed8\u8ba4\u521b\u5efa\u957f\u5ea6\u4e3a0\u6570\u7ec4<\/li>\n\n\n\n
    2. \u6dfb\u52a0\u7b2c\u4e00\u4e2a\u5143\u7d20\uff0c\u521b\u5efa\u957f\u5ea6\u4e3a10\u7684\u6570\u7ec4<\/li>\n\n\n\n
    3. \u5b58\u6ee1\u65f6\uff0c\u6269\u5bb91.5\u500d<\/li>\n\n\n\n
    4. \u4e00\u6b21\u6027\u5b58\u50a8\u7684\u91cf\u8d85\u8fc71.5\u500d\u6269\u5bb9\u7684\u91cf\uff0c\u5219\u65b0\u6570\u7ec4\u6269\u5bb9\u957f\u5ea6\u4ee5\u80fd\u5b8c\u5168\u653e\u4e0b\u65b0\u6570\u636e\u4e3a\u51c6<\/li>\n<\/ol>\n\n\n\n

      \u9002\u7528\u573a\u666f<\/h4>\n\n\n\n

      \u6839\u636e\u968f\u673a\u7d22\u5f15\u67e5\u6570\u636eor\u6570\u636e\u91cf\u4e0d\u5927<\/p>\n\n\n\n

      LinkedList<\/h3>\n\n\n\n

      \u57fa\u4e8e\u53cc\u94fe\u8868<\/p>\n\n\n\n

      \u7279\u70b9\uff1a\u67e5\u8be2\u6162\uff0c\u589e\u5220\u76f8\u5bf9\u5feb\uff0c\u5bf9\u9996\u5c3e\u589e\u5220\u6539\u67e5\u6781\u5feb<\/strong><\/p>\n\n\n\n

      Map<\/h2>\n\n\n\n
      \"image-20240127134052846\"\/<\/div><\/figure>\n\n\n\n

      \u5e38\u7528\u65b9\u6cd5\uff1a<\/p>\n\n\n\n

        \n
      • put(K key\uff0cV value)\uff1a\u63d2\u5165<\/li>\n\n\n\n
      • remove(Object key)\uff1a\u6309\u952e\u5220\u9664<\/li>\n\n\n\n
      • values()\uff1a\u8fd4\u56de\u8be5map\u7684\u6240\u6709\u503c\u7684collection\u89c6\u56fe<\/li>\n<\/ul>\n\n\n\n

        HashMap\u5e95\u5c42\u539f\u7406<\/h3>\n\n\n\n

        \u6570\u7ec4+\u94fe\u8868+\u7ea2\u9ed1\u6811<\/p>\n\n\n\n

        \u521d\u59cb\u5316\u65f6\u5206\u914d16\u4e2a\u5355\u4f4d\u7684\u5b58\u50a8\u7a7a\u95f4\uff0c\u6bcf\u6b21\u5b58\u5165\u4e00\u4e2a\u503c\u65f6\uff0c\u4f1a\u5c06KV\u5c01\u88c5\u6210\u4e00\u4e2aEntry\uff0c\u7136\u540e\u901a\u8fc7\u952e\u548c\u54c8\u5e0c\u51fd\u6570\u8ba1\u7b97\u54c8\u5e0c\u503c\uff0c\u901a\u8fc7\u5bf9\u6570\u7ec4\u6c42\u4f59\u786e\u5b9a\u8be5KV\u7684\u5b58\u50a8\u4f4d\u7f6e\u3002\u5f53\u6709\u4e00\u4e2a\u4f4d\u7f6e\u5df2\u7ecf\u6709\u4e00\u4e2aEntry\u65f6\uff0c\u8c03\u7528equal\u65b9\u6cd5\u6bd4\u8f83\uff0c\u76f8\u7b49\u4e0d\u5b58\uff0c\u4e0d\u7b49\u5219\u5b58\uff0cJDK8\u4e4b\u540e\u4f1a\u5c06\u65b0Entry\u6302\u5728\u65e7\u7684Entry\u4e0b\u9762\u5f62\u6210\u94fe\u8868\u3002<\/p>\n\n\n\n

        \u5f53\u5b58\u50a8\u7684\u6570\u7ec4\u4f7f\u7528\u7387\u5927\u4e8e75%\u65f6\uff0c\u4f1a\u5c06\u54c8\u5e0c\u6570\u7ec4\u7684\u5b58\u50a8\u7a7a\u95f4\u7ffb\u500d\u5b9e\u73b0\u6269\u5bb9\uff0c\u521d\u59cb\u6570\u7ec4\u5927\u5c0f\u4e00\u822c\u4e3a16\uff0c\u7b2c\u4e00\u6b21\u6269\u5bb9\u901a\u5e38\u65f6\u5df2\u7ecf\u670912\u4e2a\u5355\u4f4d\u7684\u4f4d\u7f6e\u88ab\u5360\u7528\u3002<\/p>\n\n\n\n

        \u800c\u5f53\u6570\u7ec4\u957f\u5ea6>=64\uff0c\u4e14\u67d0\u4e00\u4f4d\u7f6e\u94fe\u8868\u957f\u5ea6\u5927\u4e8e8\u65f6\uff0c\u94fe\u8868\u5c06\u81ea\u52a8\u8f6c\u6210\u7ea2\u9ed1\u6811\u4ee5\u63d0\u9ad8HashMap\u7684\u6548\u7387\u3002<\/p>\n\n\n\n

        List, Set, Queue, Map \u56db\u8005\u7684\u533a\u522b<\/h2>\n\n\n\n
          \n
        • List<\/code>(\u5bf9\u4ed8\u987a\u5e8f\u7684\u597d\u5e2e\u624b): \u5b58\u50a8\u7684\u5143\u7d20\u662f\u6709\u5e8f\u7684\u3001\u53ef\u91cd\u590d\u7684\u3002<\/li>\n\n\n\n
        • Set<\/code>(\u6ce8\u91cd\u72ec\u4e00\u65e0\u4e8c\u7684\u6027\u8d28): \u5b58\u50a8\u7684\u5143\u7d20\u4e0d\u53ef\u91cd\u590d\u7684\u3002<\/li>\n\n\n\n
        • Queue<\/code>(\u5b9e\u73b0\u6392\u961f\u529f\u80fd\u7684\u53eb\u53f7\u673a): \u6309\u7279\u5b9a\u7684\u6392\u961f\u89c4\u5219\u6765\u786e\u5b9a\u5148\u540e\u987a\u5e8f\uff0c\u5b58\u50a8\u7684\u5143\u7d20\u662f\u6709\u5e8f\u7684\u3001\u53ef\u91cd\u590d\u7684\u3002<\/li>\n\n\n\n
        • Map<\/code>(\u7528 key \u6765\u641c\u7d22\u7684\u4e13\u5bb6): \u4f7f\u7528\u952e\u503c\u5bf9\uff08key-value\uff09\u5b58\u50a8\uff0c\u7c7b\u4f3c\u4e8e\u6570\u5b66\u4e0a\u7684\u51fd\u6570 y=f(x)\uff0c”x” \u4ee3\u8868 key\uff0c”y” \u4ee3\u8868 value\uff0ckey \u662f\u65e0\u5e8f\u7684\u3001\u4e0d\u53ef\u91cd\u590d\u7684\uff0cvalue \u662f\u65e0\u5e8f\u7684\u3001\u53ef\u91cd\u590d\u7684\uff0c\u6bcf\u4e2a\u952e\u6700\u591a\u6620\u5c04\u5230\u4e00\u4e2a\u503c\u3002<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"

          Collection \u5e38\u7528\u65b9\u6cd5\uff1a ArrayList \u6269\u5bb9 \u9002\u7528\u573a\u666f \u6839\u636e\u968f\u673a\u7d22\u5f15\u67e5\u6570\u636eor\u6570\u636e\u91cf\u4e0d\u5927 Lin […]<\/p>\n","protected":false},"author":1,"featured_media":572,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4],"tags":[33],"class_list":["post-571","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-note","tag-java"],"_links":{"self":[{"href":"http:\/\/mapleleaf666.vip\/index.php?rest_route=\/wp\/v2\/posts\/571","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/mapleleaf666.vip\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/mapleleaf666.vip\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/mapleleaf666.vip\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/mapleleaf666.vip\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=571"}],"version-history":[{"count":3,"href":"http:\/\/mapleleaf666.vip\/index.php?rest_route=\/wp\/v2\/posts\/571\/revisions"}],"predecessor-version":[{"id":577,"href":"http:\/\/mapleleaf666.vip\/index.php?rest_route=\/wp\/v2\/posts\/571\/revisions\/577"}],"wp:featuredmedia":[{"embeddable":true,"href":"http:\/\/mapleleaf666.vip\/index.php?rest_route=\/wp\/v2\/media\/572"}],"wp:attachment":[{"href":"http:\/\/mapleleaf666.vip\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=571"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/mapleleaf666.vip\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=571"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/mapleleaf666.vip\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=571"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}