{"id":37084,"date":"2024-11-26T13:04:49","date_gmt":"2024-11-26T05:04:49","guid":{"rendered":"https:\/\/fwq.ai\/blog\/37084\/"},"modified":"2024-11-26T13:04:49","modified_gmt":"2024-11-26T05:04:49","slug":"java%e4%b8%ad%e7%9a%84%e6%95%b0%e7%bb%84%e6%80%8e%e4%b9%88%e5%ae%9a%e4%b9%89%e6%95%b0%e7%bb%84%e7%9a%84%e9%95%bf%e5%ba%a6","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/37084\/","title":{"rendered":"java\u4e2d\u7684\u6570\u7ec4\u600e\u4e48\u5b9a\u4e49\u6570\u7ec4\u7684\u957f\u5ea6"},"content":{"rendered":"

\n java \u4e2d\u6570\u7ec4\u7684\u957f\u5ea6\u5728\u521b\u5efa\u6570\u7ec4\u65f6\u6307\u5b9a\uff0c\u53ef\u4ee5\u901a\u8fc7\u4e24\u79cd\u65b9\u5f0f\u521b\u5efa\uff1a\u521d\u59cb\u5316\u5927\u5c0f\u6216\u4f7f\u7528\u6570\u7ec4\u5b57\u9762\u91cf\u3002\u6570\u7ec4\u521b\u5efa\u540e\uff0c\u5176\u957f\u5ea6\u4e0d\u53ef\u53d8\u3002\u6570\u7ec4\u7684\u957f\u5ea6\u53ef\u4ee5\u901a\u8fc7 length \u5b57\u6bb5\u83b7\u53d6\uff0c\u8fd4\u56de\u6570\u7ec4\u4e2d\u5143\u7d20\u7684\u6570\u91cf\u3002\n<\/p><\/blockquote>\n

\"java\u4e2d\u7684\u6570\u7ec4\u600e\u4e48\u5b9a\u4e49\u6570\u7ec4\u7684\u957f\u5ea6\u63d2\u56fe\"<\/p>\n

Java \u4e2d\u6570\u7ec4\u957f\u5ea6\u7684\u5b9a\u4e49<\/strong><\/p>\n

\u5728 Java \u4e2d\uff0c\u6570\u7ec4\u7684\u957f\u5ea6\u5728\u521b\u5efa\u6570\u7ec4\u65f6\u6307\u5b9a\u3002\u521b\u5efa\u6570\u7ec4\u6709\u4e24\u79cd\u4e3b\u8981\u65b9\u6cd5\uff1a<\/p>\n

1. \u521d\u59cb\u5316\u5927\u5c0f<\/strong><\/p>\n

int[] myArray = new int[5]; \/\/ \u521b\u5efa\u4e00\u4e2a\u957f\u5ea6\u4e3a 5 \u7684 int \u6570\u7ec4\nString[] myStrings = new String[10]; \/\/ \u521b\u5efa\u4e00\u4e2a\u957f\u5ea6\u4e3a 10 \u7684 String \u6570\u7ec4<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
2. \u4f7f\u7528\u6570\u7ec4\u5b57\u9762\u91cf<\/strong><\/p>\n
\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n
int[] myArray = {1, 2, 3, 4, 5}; \/\/ \u521b\u5efa\u4e00\u4e2a\u957f\u5ea6\u4e3a 5 \u7684 int \u6570\u7ec4\nString[] myStrings = {\"Hello\", \"World\", \"Java\"}; \/\/ \u521b\u5efa\u4e00\u4e2a\u957f\u5ea6\u4e3a 3 \u7684 String \u6570\u7ec4<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u6ce8\u610f\uff1a<\/strong><\/p>\n
    \n
  • \u6570\u7ec4\u521b\u5efa\u540e\uff0c\u5176\u957f\u5ea6\u5c06\u4e0d\u53ef\u53d8\u3002<\/li>\n
  • \u6570\u7ec4\u7684\u957f\u5ea6\u6c38\u8fdc\u662f\u5927\u4e8e\u6216\u7b49\u4e8e 0 \u7684\u6574\u6570\u3002<\/li>\n
  • \u5f53\u4f7f\u7528\u6570\u7ec4\u5b57\u9762\u91cf\u521b\u5efa\u6570\u7ec4\u65f6\uff0c\u7f16\u8bd1\u5668\u4f1a\u81ea\u52a8\u786e\u5b9a\u6570\u7ec4\u7684\u957f\u5ea6\u3002<\/li>\n<\/ul>\n
    \u83b7\u53d6\u6570\u7ec4\u957f\u5ea6<\/strong><\/p>\n
    \u6570\u7ec4\u7684\u957f\u5ea6\u53ef\u4ee5\u901a\u8fc7 length \u5b57\u6bb5\u6765\u83b7\u53d6\u3002\u8fd9\u662f\u4e00\u4e2a\u53ea\u8bfb\u5b57\u6bb5\uff0c\u8fd4\u56de\u6570\u7ec4\u4e2d\u5143\u7d20\u7684\u6570\u91cf\uff1a<\/p>\n
    int arrayLength = myArray.length;<\/pre>\n
     \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
    \u793a\u4f8b\uff1a<\/strong><\/p>\n
    int[] myArray = new int[5];\nSystem.out.println(\"\u6570\u7ec4\u957f\u5ea6\uff1a\" + myArray.length); \/\/ \u8f93\u51fa\uff1a5<\/pre>\n
     \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
    \u4ee5\u4e0a\u5c31\u662fjava\u4e2d\u7684\u6570\u7ec4\u600e\u4e48\u5b9a\u4e49\u6570\u7ec4\u7684\u957f\u5ea6\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":"
    java \u4e2d\u6570\u7ec4\u7684\u957f\u5ea6\u5728\u521b\u5efa\u6570\u7ec4\u65f6\u6307\u5b9a\uff0c\u53ef\u4ee5\u901a\u8fc7\u4e24\u79cd\u65b9\u5f0f\u521b\u5efa\uff1a\u521d\u59cb\u5316\u5927\u5c0f\u6216\u4f7f\u7528\u6570\u7ec4\u5b57\u9762\u91cf\u3002\u6570\u7ec4\u521b\u5efa\u540e\uff0c\u5176\u957f\u5ea6\u4e0d\u53ef\u53d8\u3002\u6570\u7ec4\u7684\u957f\u5ea6\u53ef\u4ee5\u901a\u8fc7 length \u5b57\u6bb5\u83b7\u53d6\uff0c\u8fd4\u56de\u6570\u7ec4\u4e2d\u5143\u7d20\u7684\u6570\u91cf\u3002 Java \u4e2d\u6570\u7ec4\u957f\u5ea6\u7684\u5b9a\u4e49 \u5728 Java \u4e2d\uff0c\u6570\u7ec4\u7684\u957f\u5ea6\u5728\u521b\u5efa\u6570\u7ec4\u65f6\u6307\u5b9a\u3002\u521b\u5efa\u6570\u7ec4\u6709\u4e24\u79cd\u4e3b\u8981\u65b9\u6cd5\uff1a 1. \u521d\u59cb\u5316\u5927\u5c0f int[] myArray = new int[5]; \/\/ \u521b\u5efa\u4e00\u4e2a\u957f\u5ea6\u4e3a 5 \u7684 int \u6570\u7ec4 String[] myStrings = new String[10]; \/\/ \u521b\u5efa\u4e00\u4e2a\u957f\u5ea6\u4e3a 10 \u7684 String \u6570\u7ec4 \u767b\u5f55\u540e\u590d\u5236 2. \u4f7f\u7528\u6570\u7ec4\u5b57\u9762\u91cf \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b int[] myArray = {1, 2, 3, 4, 5}; \/\/ \u521b\u5efa\u4e00\u4e2a\u957f\u5ea6\u4e3a 5 \u7684 int \u6570\u7ec4 String[] myStrings = {“Hello”, […]<\/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-37084","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/37084","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=37084"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/37084\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=37084"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=37084"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=37084"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}