{"id":37582,"date":"2024-11-26T16:21:14","date_gmt":"2024-11-26T08:21:14","guid":{"rendered":"https:\/\/fwq.ai\/blog\/37582\/"},"modified":"2024-11-26T16:21:14","modified_gmt":"2024-11-26T08:21:14","slug":"java%e9%9d%a2%e5%90%91%e5%af%b9%e8%b1%a1%e6%80%8e%e4%b9%88%e5%ae%9a%e4%b9%89%e6%95%b0%e7%bb%84","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/37582\/","title":{"rendered":"java\u9762\u5411\u5bf9\u8c61\u600e\u4e48\u5b9a\u4e49\u6570\u7ec4"},"content":{"rendered":"

\n \u5728 java \u4e2d\uff0c\u6570\u7ec4\u662f\u4e00\u79cd\u5b58\u50a8\u76f8\u540c\u6570\u636e\u7c7b\u578b\u5143\u7d20\u7684\u7ed3\u6784\u3002\u8981\u5b9a\u4e49\u6570\u7ec4\uff0c\u8bf7\u4f7f\u7528 \u6570\u7ec4\u540d[] = {\u5143\u7d20\u5217\u8868};\u3002\u6570\u7ec4\u7684\u5c5e\u6027\u5305\u62ec\u957f\u5ea6\u548c\u7c7b\u578b\u3002\u901a\u8fc7\u4e0b\u6807\u8fd0\u7b97\u7b26\u8bbf\u95ee\u5143\u7d20 (\u6570\u7ec4\u540d[\u4e0b\u6807])\uff0c\u5e76\u4f7f\u7528\u4e0b\u6807\u548c\u8d4b\u503c\u6765\u4fee\u6539\u5b83\u4eec\u3002\u8fd8\u53ef\u4ee5\u4f7f\u7528 new [][\u957f\u5ea6] \u521b\u5efa\u65b0\u7684\u6570\u7ec4\uff0c\u5b83\u4eec\u4f1a\u521d\u59cb\u5316\u4e3a\u9ed8\u8ba4\u503c\u3002\n<\/p><\/blockquote>\n

\"java\u9762\u5411\u5bf9\u8c61\u600e\u4e48\u5b9a\u4e49\u6570\u7ec4\u63d2\u56fe\"<\/p>\n

Java\u4e2d\u5b9a\u4e49\u6570\u7ec4<\/strong><\/p>\n

\u5728Java\u4e2d\uff0c\u6570\u7ec4\u662f\u4e00\u79cd\u6570\u636e\u7ed3\u6784\uff0c\u7528\u4e8e\u5b58\u50a8\u76f8\u540c\u6570\u636e\u7c7b\u578b\u7684\u4e00\u7ec4\u5143\u7d20\u3002\u8981\u5b9a\u4e49\u4e00\u4e2a\u6570\u7ec4\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u8bed\u6cd5\uff1a<\/p>\n

<\u6570\u636e\u7c7b\u578b> \u6570\u7ec4\u540d[] = {\u5143\u7d201, \u5143\u7d202, ..., \u5143\u7d20n};<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u5176\u4e2d\uff1a<\/p>\n
    \n
  •  <\/strong>\uff1a\u6307\u5b9a\u6570\u7ec4\u4e2d\u5143\u7d20\u7684\u6570\u636e\u7c7b\u578b\uff0c\u4f8b\u5982int\u3001double\u6216String\u3002<\/li>\n
  •  \u6570\u7ec4\u540d[]<\/strong>\uff1a\u6307\u5b9a\u6570\u7ec4\u7684\u540d\u79f0\u3002<\/li>\n
  •  {\u5143\u7d201, \u5143\u7d202, …, \u5143\u7d20n}<\/strong>\uff1a\u6307\u5b9a\u6570\u7ec4\u4e2d\u5143\u7d20\u7684\u5217\u8868\uff0c\u7528\u9017\u53f7\u5206\u9694\u3002<\/li>\n<\/ul>\n
    \u793a\u4f8b\uff1a<\/strong><\/p>\n
    \u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n
    \u4ee5\u4e0b\u4ee3\u7801\u5b9a\u4e49\u4e86\u4e00\u4e2a\u540d\u4e3anumbers<\/strong>\u7684int\u6570\u7ec4\uff0c\u5176\u4e2d\u5305\u542b3\u4e2a\u5143\u7d20\uff1a<\/p>\n
    int[] numbers = {10, 20, 30};<\/pre>\n
     \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
    \u6570\u7ec4\u7684\u5c5e\u6027<\/strong><\/p>\n
      \n
    •  \u957f\u5ea6<\/strong>\uff1a\u6570\u7ec4\u7684\u957f\u5ea6\u662f\u4e00\u4e2a\u53ea\u8bfb\u5c5e\u6027\uff0c\u8fd4\u56de\u6570\u7ec4\u4e2d\u5143\u7d20\u7684\u6570\u91cf\u3002\u4f8b\u5982\uff0cnumbers\u6570\u7ec4\u7684\u957f\u5ea6\u4e3a3\u3002<\/li>\n
    •  \u7c7b\u578b<\/strong>\uff1a\u6570\u7ec4\u7684\u7c7b\u578b\u662f\u4e00\u4e2aClass\u5bf9\u8c61\uff0c\u8868\u793a\u6570\u7ec4\u4e2d\u5143\u7d20\u7684\u6570\u636e\u7c7b\u578b\u3002\u4f8b\u5982\uff0cnumbers\u6570\u7ec4\u7684\u7c7b\u578b\u662fint[].<\/li>\n<\/ul>\n
      \u8bbf\u95ee\u6570\u7ec4\u5143\u7d20<\/strong><\/p>\n
      \u8981\u8bbf\u95ee\u6570\u7ec4\u5143\u7d20\uff0c\u53ef\u4ee5\u4f7f\u7528\u4e0b\u6807\u8fd0\u7b97\u7b26\uff08[]\uff09\u3002\u4e0b\u6807\u4ece0\u5f00\u59cb\uff0c\u8868\u793a\u6570\u7ec4\u4e2d\u7684\u7b2c\u4e00\u4e2a\u5143\u7d20\u3002\u4f8b\u5982\uff0c\u4ee5\u4e0b\u4ee3\u7801\u83b7\u53d6numbers\u6570\u7ec4\u4e2d\u7b2c\u4e00\u4e2a\u5143\u7d20\uff1a<\/p>\n
      int firstNumber = numbers[0]; \/\/ \u503c\u4e3a10<\/pre>\n
       \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
      \u4fee\u6539\u6570\u7ec4\u5143\u7d20<\/strong><\/p>\n
      \u8981\u4fee\u6539\u6570\u7ec4\u5143\u7d20\uff0c\u53ef\u4ee5\u4f7f\u7528\u4e0b\u6807\u8fd0\u7b97\u7b26\u548c\u8d4b\u503c\u8fd0\u7b97\u7b26\u3002\u4f8b\u5982\uff0c\u4ee5\u4e0b\u4ee3\u7801\u5c06numbers\u6570\u7ec4\u4e2d\u7b2c\u4e8c\u4e2a\u5143\u7d20\u4fee\u6539\u4e3a25\uff1a<\/p>\n
      numbers[1] = 25;<\/pre>\n
       \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
      \u521b\u5efa\u65b0\u6570\u7ec4<\/strong><\/p>\n
      \u9664\u4e86\u4f7f\u7528\u521d\u59cb\u5316\u5217\u8868\u5b9a\u4e49\u6570\u7ec4\u5916\uff0c\u8fd8\u53ef\u4ee5\u4f7f\u7528new<\/strong>\u5173\u952e\u5b57\u521b\u5efa\u65b0\u6570\u7ec4\u3002\u8bed\u6cd5\u5982\u4e0b\uff1a<\/p>\n
      <\u6570\u636e\u7c7b\u578b>[] \u6570\u7ec4\u540d = new <\u6570\u636e\u7c7b\u578b>[\u957f\u5ea6];<\/pre>\n
       \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
      \u5176\u4e2d\uff1a<\/p>\n
        \n
      •  []<\/strong>\uff1a\u6307\u5b9a\u6570\u7ec4\u7684\u7c7b\u578b\u3002<\/li>\n
      •  \u6570\u7ec4\u540d<\/strong>\uff1a\u6307\u5b9a\u6570\u7ec4\u7684\u540d\u79f0\u3002<\/li>\n
      •  [\u957f\u5ea6]<\/strong>\uff1a\u6307\u5b9a\u6570\u7ec4\u7684\u957f\u5ea6\u3002<\/li>\n<\/ul>\n
        \u6ce8\u610f\uff1a<\/strong>\u4f7f\u7528new\u521b\u5efa\u7684\u6570\u7ec4\u4f1a\u88ab\u521d\u59cb\u5316\u4e3a\u9ed8\u8ba4\u503c\uff0c\u5bf9\u4e8e\u6570\u5b57\u7c7b\u578b\u4e3a0\uff0c\u5bf9\u4e8e\u5f15\u7528\u7c7b\u578b\u4e3anull\u3002<\/p>\n
        \u4ee5\u4e0a\u5c31\u662fjava\u9762\u5411\u5bf9\u8c61\u600e\u4e48\u5b9a\u4e49\u6570\u7ec4\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":"
        \u5728 java \u4e2d\uff0c\u6570\u7ec4\u662f\u4e00\u79cd\u5b58\u50a8\u76f8\u540c\u6570\u636e\u7c7b\u578b\u5143\u7d20\u7684\u7ed3\u6784\u3002\u8981\u5b9a\u4e49\u6570\u7ec4\uff0c\u8bf7\u4f7f\u7528 \u6570\u7ec4\u540d[] = {\u5143\u7d20\u5217\u8868};\u3002\u6570\u7ec4\u7684\u5c5e\u6027\u5305\u62ec\u957f\u5ea6\u548c\u7c7b\u578b\u3002\u901a\u8fc7\u4e0b\u6807\u8fd0\u7b97\u7b26\u8bbf\u95ee\u5143\u7d20 (\u6570\u7ec4\u540d[\u4e0b\u6807])\uff0c\u5e76\u4f7f\u7528\u4e0b\u6807\u548c\u8d4b\u503c\u6765\u4fee\u6539\u5b83\u4eec\u3002\u8fd8\u53ef\u4ee5\u4f7f\u7528 new [][\u957f\u5ea6] \u521b\u5efa\u65b0\u7684\u6570\u7ec4\uff0c\u5b83\u4eec\u4f1a\u521d\u59cb\u5316\u4e3a\u9ed8\u8ba4\u503c\u3002 Java\u4e2d\u5b9a\u4e49\u6570\u7ec4 \u5728Java\u4e2d\uff0c\u6570\u7ec4\u662f\u4e00\u79cd\u6570\u636e\u7ed3\u6784\uff0c\u7528\u4e8e\u5b58\u50a8\u76f8\u540c\u6570\u636e\u7c7b\u578b\u7684\u4e00\u7ec4\u5143\u7d20\u3002\u8981\u5b9a\u4e49\u4e00\u4e2a\u6570\u7ec4\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u8bed\u6cd5\uff1a <\u6570\u636e\u7c7b\u578b> \u6570\u7ec4\u540d[] = {\u5143\u7d201, \u5143\u7d202, …, \u5143\u7d20n}; \u767b\u5f55\u540e\u590d\u5236 \u5176\u4e2d\uff1a \uff1a\u6307\u5b9a\u6570\u7ec4\u4e2d\u5143\u7d20\u7684\u6570\u636e\u7c7b\u578b\uff0c\u4f8b\u5982int\u3001double\u6216String\u3002 \u6570\u7ec4\u540d[]\uff1a\u6307\u5b9a\u6570\u7ec4\u7684\u540d\u79f0\u3002 {\u5143\u7d201, \u5143\u7d202, …, \u5143\u7d20n}\uff1a\u6307\u5b9a\u6570\u7ec4\u4e2d\u5143\u7d20\u7684\u5217\u8868\uff0c\u7528\u9017\u53f7\u5206\u9694\u3002 \u793a\u4f8b\uff1a \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b \u4ee5\u4e0b\u4ee3\u7801\u5b9a\u4e49\u4e86\u4e00\u4e2a\u540d\u4e3anumbers\u7684int\u6570\u7ec4\uff0c\u5176\u4e2d\u5305\u542b3\u4e2a\u5143\u7d20\uff1a int[] numbers = {10, 20, 30}; \u767b\u5f55\u540e\u590d\u5236 \u6570\u7ec4\u7684\u5c5e\u6027 \u957f\u5ea6\uff1a\u6570\u7ec4\u7684\u957f\u5ea6\u662f\u4e00\u4e2a\u53ea\u8bfb\u5c5e\u6027\uff0c\u8fd4\u56de\u6570\u7ec4\u4e2d\u5143\u7d20\u7684\u6570\u91cf\u3002\u4f8b\u5982\uff0cnumbers\u6570\u7ec4\u7684\u957f\u5ea6\u4e3a3\u3002 \u7c7b\u578b\uff1a\u6570\u7ec4\u7684\u7c7b\u578b\u662f\u4e00\u4e2aClass\u5bf9\u8c61\uff0c\u8868\u793a\u6570\u7ec4\u4e2d\u5143\u7d20\u7684\u6570\u636e\u7c7b\u578b\u3002\u4f8b\u5982\uff0cnumbers\u6570\u7ec4\u7684\u7c7b\u578b\u662fint[]. \u8bbf\u95ee\u6570\u7ec4\u5143\u7d20 \u8981\u8bbf\u95ee\u6570\u7ec4\u5143\u7d20\uff0c\u53ef\u4ee5\u4f7f\u7528\u4e0b\u6807\u8fd0\u7b97\u7b26\uff08[]\uff09\u3002\u4e0b\u6807\u4ece0\u5f00\u59cb\uff0c\u8868\u793a\u6570\u7ec4\u4e2d\u7684\u7b2c\u4e00\u4e2a\u5143\u7d20\u3002\u4f8b\u5982\uff0c\u4ee5\u4e0b\u4ee3\u7801\u83b7\u53d6numbers\u6570\u7ec4\u4e2d\u7b2c\u4e00\u4e2a\u5143\u7d20\uff1a int firstNumber = numbers[0]; \/\/ \u503c\u4e3a10 \u767b\u5f55\u540e\u590d\u5236 \u4fee\u6539\u6570\u7ec4\u5143\u7d20 \u8981\u4fee\u6539\u6570\u7ec4\u5143\u7d20\uff0c\u53ef\u4ee5\u4f7f\u7528\u4e0b\u6807\u8fd0\u7b97\u7b26\u548c\u8d4b\u503c\u8fd0\u7b97\u7b26\u3002\u4f8b\u5982\uff0c\u4ee5\u4e0b\u4ee3\u7801\u5c06numbers\u6570\u7ec4\u4e2d\u7b2c\u4e8c\u4e2a\u5143\u7d20\u4fee\u6539\u4e3a25\uff1a numbers[1] = 25; \u767b\u5f55\u540e\u590d\u5236 […]<\/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-37582","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/37582","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=37582"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/37582\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=37582"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=37582"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=37582"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}