{"id":65263,"date":"2025-05-03T09:57:47","date_gmt":"2025-05-03T01:57:47","guid":{"rendered":"https:\/\/fwq.ai\/blog\/65263\/"},"modified":"2025-05-03T09:57:47","modified_gmt":"2025-05-03T01:57:47","slug":"java%e4%b8%ad%e6%95%b0%e7%bb%84%e6%80%8e%e4%b9%88%e5%88%9b%e5%bb%ba%e6%95%b0%e7%bb%84%e5%af%b9%e8%b1%a1%e6%95%b0%e7%bb%84-2","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/65263\/","title":{"rendered":"java\u4e2d\u6570\u7ec4\u600e\u4e48\u521b\u5efa\u6570\u7ec4\u5bf9\u8c61\u6570\u7ec4"},"content":{"rendered":"

\n \u8981\u521b\u5efa\u4e00\u4e2a java \u6570\u7ec4\u5bf9\u8c61\uff0c\u9700\u8981\u9075\u5faa\u4ee5\u4e0b\u6b65\u9aa4\uff1a\u58f0\u660e\u6570\u7ec4\u53d8\u91cf\uff0c\u6307\u5b9a\u7c7b\u578b\u548c\u5143\u7d20\u4e2a\u6570\u3002\u521d\u59cb\u5316\u6570\u7ec4\uff0c\u53ef\u76f4\u63a5\u6307\u5b9a\u5143\u7d20\u503c\u6216\u4f7f\u7528 new \u5173\u952e\u5b57\u521b\u5efa\u6307\u5b9a\u5c3a\u5bf8\u7684\u6570\u7ec4\u3002\u901a\u8fc7\u65b9\u62ec\u53f7\u540e\u63a5\u7d22\u5f15\u8bbf\u95ee\u6570\u7ec4\u5143\u7d20\u3002\u4f7f\u7528\u7d22\u5f15\u4fee\u6539\u6570\u7ec4\u5143\u7d20\u7684\u503c\u3002\n<\/p><\/blockquote>\n

\"java\u4e2d\u6570\u7ec4\u600e\u4e48\u521b\u5efa\u6570\u7ec4\u5bf9\u8c61\u6570\u7ec4\u63d2\u56fe\"<\/p>\n

\u5982\u4f55\u521b\u5efa Java \u6570\u7ec4\u5bf9\u8c61<\/strong><\/p>\n

\u5728 Java \u4e2d\uff0c\u6570\u7ec4\u662f\u4e00\u79cd\u6570\u636e\u7ed3\u6784\uff0c\u7528\u4e8e\u5b58\u50a8\u76f8\u540c\u7c7b\u578b\u5143\u7d20\u7684\u96c6\u5408\u3002\u8981\u521b\u5efa\u4e00\u4e2a\u6570\u7ec4\u5bf9\u8c61\uff0c\u53ef\u4ee5\u9075\u5faa\u4ee5\u4e0b\u6b65\u9aa4\uff1a<\/p>\n

1. \u58f0\u660e\u6570\u7ec4<\/strong><\/p>\n

\u9996\u5148\uff0c\u9700\u8981\u58f0\u660e\u4e00\u4e2a\u6570\u7ec4\u53d8\u91cf\uff0c\u5e76\u6307\u5b9a\u5176\u7c7b\u578b\u548c\u5143\u7d20\u4e2a\u6570\u3002\u6570\u7ec4\u7c7b\u578b\u7684\u8bed\u6cd5\u5982\u4e0b\uff1a<\/p>\n

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

<\u6570\u7ec4\u5143\u7d20\u7c7b\u578b>[ ] <\u6570\u7ec4\u540d>;<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u4f8b\u5982\uff0c\u8981\u521b\u5efa\u4e00\u4e2a\u6574\u6570\u6570\u7ec4\uff0c\u53ef\u4ee5\u8fd9\u6837\u58f0\u660e\uff1a<\/p>\n
int[] myArray;<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
2. \u521d\u59cb\u5316\u6570\u7ec4<\/strong><\/p>\n
\u58f0\u660e\u6570\u7ec4\u540e\uff0c\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u4e24\u79cd\u65b9\u5f0f\u521d\u59cb\u5316\uff1a<\/p>\n
    \n
  •  \u76f4\u63a5\u521d\u59cb\u5316\uff1a<\/strong>\u5728\u58f0\u660e\u6570\u7ec4\u65f6\u76f4\u63a5\u6307\u5b9a\u5143\u7d20\u503c\uff0c\u4f7f\u7528\u5927\u62ec\u53f7\u5c06\u5143\u7d20\u62ec\u8d77\u6765\u3002\u4f8b\u5982\uff1a<\/li>\n<\/ul>\n
    int[] myArray = {1, 2, 3, 4, 5};<\/pre>\n
     \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
      \n
    •  \u4f7f\u7528 new \u5173\u952e\u5b57\uff1a<\/strong>\u4f7f\u7528 new \u5173\u952e\u5b57\u521b\u5efa\u4e00\u4e2a\u6307\u5b9a\u5c3a\u5bf8\u7684\u6570\u7ec4\u5bf9\u8c61\uff0c\u5e76\u4f7f\u7528\u6570\u7ec4\u957f\u5ea6\u6765\u586b\u5145\u5143\u7d20\uff0c\u521d\u59cb\u503c\u9ed8\u8ba4\u4e3a 0\u3002\u4f8b\u5982\uff1a<\/li>\n<\/ul>\n
      int[] myArray = new int[5];<\/pre>\n
       \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
      3. \u8bbf\u95ee\u6570\u7ec4\u5143\u7d20<\/strong><\/p>\n
      \u8981\u8bbf\u95ee\u6570\u7ec4\u4e2d\u7684\u5143\u7d20\uff0c\u53ef\u4ee5\u4f7f\u7528\u65b9\u62ec\u53f7\u540e\u63a5\u7d22\u5f15\u3002\u7d22\u5f15\u4ece 0 \u5f00\u59cb\uff0c\u8868\u793a\u6570\u7ec4\u7684\u7b2c\u4e00\u4e2a\u5143\u7d20\u3002\u4f8b\u5982\uff1a<\/p>\n
      System.out.println(myArray[2]); \/\/ \u8f93\u51fa\u6570\u7ec4\u7684\u7b2c\u4e09\u4e2a\u5143\u7d20\uff08\u7d22\u5f15\u4e3a 2\uff09<\/pre>\n
       \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
      4. \u4fee\u6539\u6570\u7ec4\u5143\u7d20<\/strong><\/p>\n
      \u53ef\u4ee5\u901a\u8fc7\u7d22\u5f15\u4fee\u6539\u6570\u7ec4\u5143\u7d20\u7684\u503c\u3002\u4f8b\u5982\uff1a<\/p>\n
      myArray[2] = 10; \/\/ \u5c06\u6570\u7ec4\u7684\u7b2c\u4e09\u4e2a\u5143\u7d20\u4fee\u6539\u4e3a 10<\/pre>\n
       \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
      \u5176\u4ed6\u6ce8\u610f\u4e8b\u9879\uff1a<\/strong><\/p>\n
        \n
      • \u6570\u7ec4\u7684\u5927\u5c0f\u662f\u56fa\u5b9a\u7684\uff0c\u521b\u5efa\u540e\u4e0d\u80fd\u6539\u53d8\u3002<\/li>\n
      • \u5982\u679c\u6570\u7ec4\u5143\u7d20\u7c7b\u578b\u662f\u5f15\u7528\u7c7b\u578b\uff08\u5982 String\uff09\uff0c\u5219\u9ed8\u8ba4\u503c\u4e3a null\u3002<\/li>\n
      • \u6570\u7ec4\u53d8\u91cf\u672c\u8eab\u662f\u4e00\u4e2a\u5f15\u7528\uff0c\u6307\u5411\u6570\u7ec4\u5bf9\u8c61\u5728\u5806\u5185\u5b58\u4e2d\u7684\u4f4d\u7f6e\u3002<\/li>\n<\/ul>\n
        \u4ee5\u4e0a\u5c31\u662fjava\u4e2d\u6570\u7ec4\u600e\u4e48\u521b\u5efa\u6570\u7ec4\u5bf9\u8c61\u6570\u7ec4\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8IDCBABY\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"
        \u8981\u521b\u5efa\u4e00\u4e2a java \u6570\u7ec4\u5bf9\u8c61\uff0c\u9700\u8981\u9075\u5faa\u4ee5\u4e0b\u6b65\u9aa4\uff1a\u58f0\u660e\u6570\u7ec4\u53d8\u91cf\uff0c\u6307\u5b9a\u7c7b\u578b\u548c\u5143\u7d20\u4e2a\u6570\u3002\u521d\u59cb\u5316\u6570\u7ec4\uff0c\u53ef\u76f4\u63a5\u6307\u5b9a\u5143\u7d20\u503c\u6216\u4f7f\u7528 new \u5173\u952e\u5b57\u521b\u5efa\u6307\u5b9a\u5c3a\u5bf8\u7684\u6570\u7ec4\u3002\u901a\u8fc7\u65b9\u62ec\u53f7\u540e\u63a5\u7d22\u5f15\u8bbf\u95ee\u6570\u7ec4\u5143\u7d20\u3002\u4f7f\u7528\u7d22\u5f15\u4fee\u6539\u6570\u7ec4\u5143\u7d20\u7684\u503c\u3002 \u5982\u4f55\u521b\u5efa Java \u6570\u7ec4\u5bf9\u8c61 \u5728 Java \u4e2d\uff0c\u6570\u7ec4\u662f\u4e00\u79cd\u6570\u636e\u7ed3\u6784\uff0c\u7528\u4e8e\u5b58\u50a8\u76f8\u540c\u7c7b\u578b\u5143\u7d20\u7684\u96c6\u5408\u3002\u8981\u521b\u5efa\u4e00\u4e2a\u6570\u7ec4\u5bf9\u8c61\uff0c\u53ef\u4ee5\u9075\u5faa\u4ee5\u4e0b\u6b65\u9aa4\uff1a 1. \u58f0\u660e\u6570\u7ec4 \u9996\u5148\uff0c\u9700\u8981\u58f0\u660e\u4e00\u4e2a\u6570\u7ec4\u53d8\u91cf\uff0c\u5e76\u6307\u5b9a\u5176\u7c7b\u578b\u548c\u5143\u7d20\u4e2a\u6570\u3002\u6570\u7ec4\u7c7b\u578b\u7684\u8bed\u6cd5\u5982\u4e0b\uff1a \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b <\u6570\u7ec4\u5143\u7d20\u7c7b\u578b>[ ] <\u6570\u7ec4\u540d>; \u767b\u5f55\u540e\u590d\u5236 \u4f8b\u5982\uff0c\u8981\u521b\u5efa\u4e00\u4e2a\u6574\u6570\u6570\u7ec4\uff0c\u53ef\u4ee5\u8fd9\u6837\u58f0\u660e\uff1a int[] myArray; \u767b\u5f55\u540e\u590d\u5236 2. \u521d\u59cb\u5316\u6570\u7ec4 \u58f0\u660e\u6570\u7ec4\u540e\uff0c\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u4e24\u79cd\u65b9\u5f0f\u521d\u59cb\u5316\uff1a \u76f4\u63a5\u521d\u59cb\u5316\uff1a\u5728\u58f0\u660e\u6570\u7ec4\u65f6\u76f4\u63a5\u6307\u5b9a\u5143\u7d20\u503c\uff0c\u4f7f\u7528\u5927\u62ec\u53f7\u5c06\u5143\u7d20\u62ec\u8d77\u6765\u3002\u4f8b\u5982\uff1a int[] myArray = {1, 2, 3, 4, 5}; \u767b\u5f55\u540e\u590d\u5236 \u4f7f\u7528 new \u5173\u952e\u5b57\uff1a\u4f7f\u7528 new \u5173\u952e\u5b57\u521b\u5efa\u4e00\u4e2a\u6307\u5b9a\u5c3a\u5bf8\u7684\u6570\u7ec4\u5bf9\u8c61\uff0c\u5e76\u4f7f\u7528\u6570\u7ec4\u957f\u5ea6\u6765\u586b\u5145\u5143\u7d20\uff0c\u521d\u59cb\u503c\u9ed8\u8ba4\u4e3a 0\u3002\u4f8b\u5982\uff1a int[] myArray = new int[5]; \u767b\u5f55\u540e\u590d\u5236 3. \u8bbf\u95ee\u6570\u7ec4\u5143\u7d20 \u8981\u8bbf\u95ee\u6570\u7ec4\u4e2d\u7684\u5143\u7d20\uff0c\u53ef\u4ee5\u4f7f\u7528\u65b9\u62ec\u53f7\u540e\u63a5\u7d22\u5f15\u3002\u7d22\u5f15\u4ece 0 \u5f00\u59cb\uff0c\u8868\u793a\u6570\u7ec4\u7684\u7b2c\u4e00\u4e2a\u5143\u7d20\u3002\u4f8b\u5982\uff1a System.out.println(myArray[2]); \/\/ […]<\/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-65263","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/65263","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=65263"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/65263\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=65263"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=65263"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=65263"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}