{"id":66437,"date":"2025-05-03T12:22:51","date_gmt":"2025-05-03T04:22:51","guid":{"rendered":"https:\/\/fwq.ai\/blog\/66437\/"},"modified":"2025-05-03T12:22:51","modified_gmt":"2025-05-03T04:22:51","slug":"java%e9%87%8c%e6%80%8e%e4%b9%88%e5%ae%9a%e4%b9%89%e5%ad%97%e7%ac%a6%e4%b8%b2%e6%95%b0%e7%bb%84-2","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/66437\/","title":{"rendered":"java\u91cc\u600e\u4e48\u5b9a\u4e49\u5b57\u7b26\u4e32\u6570\u7ec4"},"content":{"rendered":"

\n \u5728 java \u4e2d\u5b9a\u4e49\u5b57\u7b26\u4e32\u6570\u7ec4\u6709\u4e24\u79cd\u65b9\u5f0f\uff1a\u4f7f\u7528\u5b57\u7b26\u4e32\u5b57\u9762\u91cf\uff1a\u5c06\u5b57\u7b26\u4e32\u76f4\u63a5\u653e\u5165\u5927\u62ec\u53f7\u4e2d\u3002\u4f7f\u7528 new \u5173\u952e\u5b57\uff1a\u521b\u5efa\u6307\u5b9a\u957f\u5ea6\u7684\u6570\u7ec4\uff0c\u7136\u540e\u9010\u4e2a\u8d4b\u503c\u3002\u6570\u7ec4\u5143\u7d20\u53ef\u4f7f\u7528\u65b9\u62ec\u53f7\u8fd0\u7b97\u7b26\u8bbf\u95ee\u3002\u6570\u7ec4\u5927\u5c0f\u4e0d\u53ef\u53d8\uff0c\u9ed8\u8ba4\u5143\u7d20\u503c\u4e3a null\uff0c\u6570\u7ec4\u662f\u5f15\u7528\u7c7b\u578b\u3002\n<\/p><\/blockquote>\n

\"java\u91cc\u600e\u4e48\u5b9a\u4e49\u5b57\u7b26\u4e32\u6570\u7ec4\u63d2\u56fe\"<\/p>\n

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

\u5728 Java \u4e2d\uff0c\u5b9a\u4e49\u5b57\u7b26\u4e32\u6570\u7ec4\u6709\u4ee5\u4e0b\u4e24\u79cd\u65b9\u5f0f\uff1a<\/p>\n

1. \u4f7f\u7528\u5b57\u7b26\u4e32\u5b57\u9762\u91cf<\/strong><\/p>\n

String[] names = {\"John\", \"Mary\", \"Bob\"};<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
2. \u4f7f\u7528 new \u5173\u952e\u5b57<\/strong><\/p>\n
\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n
String[] names = new String[3];\nnames[0] = \"John\";\nnames[1] = \"Mary\";\nnames[2] = \"Bob\";<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u6570\u7ec4\u5143\u7d20\u8bbf\u95ee<\/strong><\/p>\n
\u53ef\u4ee5\u4f7f\u7528\u65b9\u62ec\u53f7\u8fd0\u7b97\u7b26\u8bbf\u95ee\u6570\u7ec4\u5143\u7d20\uff1a<\/p>\n
System.out.println(names[0]); \/\/ \"John\"<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u6570\u7ec4\u957f\u5ea6<\/strong><\/p>\n
\u53ef\u4ee5\u901a\u8fc7 length \u5c5e\u6027\u83b7\u53d6\u6570\u7ec4\u957f\u5ea6\uff1a<\/p>\n
int length = names.length; \/\/ 3<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u6ce8\u610f\u4e8b\u9879<\/strong><\/p>\n
    \n
  •  \u6570\u7ec4\u5927\u5c0f\u4e0d\u53ef\u53d8\uff1a<\/strong>\u4e00\u65e6\u5b9a\u4e49\u4e86\u6570\u7ec4\u5927\u5c0f\uff0c\u5b83\u5c31\u65e0\u6cd5\u66f4\u6539\u3002<\/li>\n
  •  \u5143\u7d20\u9ed8\u8ba4\u503c\u4e3a null\uff1a<\/strong>\u4f7f\u7528 new \u5173\u952e\u5b57\u521b\u5efa\u7684\u6570\u7ec4\u5143\u7d20\u9ed8\u8ba4\u503c\u4e3a null\u3002<\/li>\n
  •  \u6570\u7ec4\u662f\u5f15\u7528\u7c7b\u578b\uff1a<\/strong>\u6570\u7ec4\u53d8\u91cf\u5b58\u50a8\u7684\u662f\u6570\u7ec4\u5728\u5185\u5b58\u4e2d\u7684\u5f15\u7528\uff0c\u800c\u4e0d\u662f\u6570\u7ec4\u672c\u8eab\u7684\u5185\u5bb9\u3002<\/li>\n<\/ul>\n
    \u4ee5\u4e0a\u5c31\u662fjava\u91cc\u600e\u4e48\u5b9a\u4e49\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8IDCBABY\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"
    \u5728 java \u4e2d\u5b9a\u4e49\u5b57\u7b26\u4e32\u6570\u7ec4\u6709\u4e24\u79cd\u65b9\u5f0f\uff1a\u4f7f\u7528\u5b57\u7b26\u4e32\u5b57\u9762\u91cf\uff1a\u5c06\u5b57\u7b26\u4e32\u76f4\u63a5\u653e\u5165\u5927\u62ec\u53f7\u4e2d\u3002\u4f7f\u7528 new \u5173\u952e\u5b57\uff1a\u521b\u5efa\u6307\u5b9a\u957f\u5ea6\u7684\u6570\u7ec4\uff0c\u7136\u540e\u9010\u4e2a\u8d4b\u503c\u3002\u6570\u7ec4\u5143\u7d20\u53ef\u4f7f\u7528\u65b9\u62ec\u53f7\u8fd0\u7b97\u7b26\u8bbf\u95ee\u3002\u6570\u7ec4\u5927\u5c0f\u4e0d\u53ef\u53d8\uff0c\u9ed8\u8ba4\u5143\u7d20\u503c\u4e3a null\uff0c\u6570\u7ec4\u662f\u5f15\u7528\u7c7b\u578b\u3002 Java \u4e2d\u5b9a\u4e49 \u5728 Java \u4e2d\uff0c\u5b9a\u4e49\u5b57\u7b26\u4e32\u6570\u7ec4\u6709\u4ee5\u4e0b\u4e24\u79cd\u65b9\u5f0f\uff1a 1. \u4f7f\u7528\u5b57\u7b26\u4e32\u5b57\u9762\u91cf String[] names = {“John”, “Mary”, “Bob”}; \u767b\u5f55\u540e\u590d\u5236 2. \u4f7f\u7528 new \u5173\u952e\u5b57 \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b String[] names = new String[3]; names[0] = “John”; names[1] = “Mary”; names[2] = “Bob”; \u767b\u5f55\u540e\u590d\u5236 \u6570\u7ec4\u5143\u7d20\u8bbf\u95ee \u53ef\u4ee5\u4f7f\u7528\u65b9\u62ec\u53f7\u8fd0\u7b97\u7b26\u8bbf\u95ee\u6570\u7ec4\u5143\u7d20\uff1a System.out.println(names[0]); \/\/ “John” \u767b\u5f55\u540e\u590d\u5236 \u6570\u7ec4\u957f\u5ea6 \u53ef\u4ee5\u901a\u8fc7 length \u5c5e\u6027\u83b7\u53d6\u6570\u7ec4\u957f\u5ea6\uff1a int length = names.length; \/\/ […]<\/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-66437","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/66437","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=66437"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/66437\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=66437"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=66437"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=66437"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}