{"id":36666,"date":"2024-11-26T08:27:05","date_gmt":"2024-11-26T00:27:05","guid":{"rendered":"https:\/\/fwq.ai\/blog\/36666\/"},"modified":"2024-11-26T08:27:05","modified_gmt":"2024-11-26T00:27:05","slug":"java%e6%80%8e%e4%b9%88%e5%bb%ba%e4%b8%80%e4%b8%aa%e6%95%b0%e7%bb%84","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/36666\/","title":{"rendered":"java\u600e\u4e48\u5efa\u4e00\u4e2a\u6570\u7ec4"},"content":{"rendered":"<blockquote><p>\n  \u5982\u4f55\u5728 java \u4e2d\u521b\u5efa\u4e00\u4e2a\u6570\u7ec4\uff1f\u58f0\u660e\u6570\u7ec4\uff08\u6570\u636e\u7c7b\u578b[] \u6570\u7ec4\u540d = new \u6570\u636e\u7c7b\u578b[\u957f\u5ea6]\uff09\uff1b\u521d\u59cb\u5316\u6570\u7ec4\uff08\u6570\u7ec4\u540d[\u7d22\u5f15] = \u503c\uff09\uff1b\u8bbf\u95ee\u6570\u7ec4\u5143\u7d20\uff08\u6570\u7ec4\u540d[\u7d22\u5f15]\uff09\uff1b\u83b7\u53d6\u6570\u7ec4\u957f\u5ea6\uff08\u6570\u7ec4\u540d.length\uff09\u3002\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202411\/12\/2024111213092156799.jpg\" class=\"aligncenter\" title=\"java\u600e\u4e48\u5efa\u4e00\u4e2a\u6570\u7ec4\u63d2\u56fe\" alt=\"java\u600e\u4e48\u5efa\u4e00\u4e2a\u6570\u7ec4\u63d2\u56fe\" \/><\/p>\n<p><strong>\u5982\u4f55\u5728 Java \u4e2d\u521b\u5efa\u4e00\u4e2a\u6570\u7ec4<\/strong><\/p>\n<p>\u6570\u7ec4\u662f Java \u4e2d\u7528\u4e8e\u5b58\u50a8\u4e00\u7cfb\u5217\u5143\u7d20\u7684\u6570\u636e\u7ed3\u6784\u3002\u521b\u5efa\u6570\u7ec4\u9700\u8981\u4ee5\u4e0b\u6b65\u9aa4\uff1a<\/p>\n<p><strong>1. \u58f0\u660e\u6570\u7ec4<\/strong><br \/>\u9996\u5148\uff0c\u58f0\u660e\u4e00\u4e2a\u53d8\u91cf\u6765\u5f15\u7528\u6570\u7ec4\uff0c\u5e76\u6307\u5b9a\u6570\u7ec4\u7684\u7c7b\u578b\u548c\u957f\u5ea6\u3002\u8bed\u6cd5\u5982\u4e0b\uff1a<\/p>\n<pre>\u6570\u636e\u7c7b\u578b[] \u6570\u7ec4\u540d = new \u6570\u636e\u7c7b\u578b[\u957f\u5ea6];<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u4f8b\u5982\uff0c\u521b\u5efa\u4e00\u4e2a\u5b58\u50a8 5 \u4e2a int \u7684\u6570\u7ec4\uff1a<\/p>\n<p><span>\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n<pre>int[] myArray = new int[5];<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>2. \u521d\u59cb\u5316\u6570\u7ec4<\/strong><br \/>\u58f0\u660e\u6570\u7ec4\u540e\uff0c\u9700\u8981\u521d\u59cb\u5316\u5404\u4e2a\u5143\u7d20\u3002\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u8bed\u6cd5\uff1a<\/p>\n<pre>\u6570\u7ec4\u540d[\u7d22\u5f15] = \u503c;<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u4f8b\u5982\uff0c\u521d\u59cb\u5316 myArray \u7684\u7b2c\u4e00\u4e2a\u5143\u7d20\u4e3a 10\uff1a<\/p>\n<pre>myArray[0] = 10;<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>3. \u8bbf\u95ee\u6570\u7ec4\u5143\u7d20<\/strong><br \/>\u53ef\u4ee5\u4f7f\u7528\u7d22\u5f15\u8bbf\u95ee\u6570\u7ec4\u5143\u7d20\u3002\u8bed\u6cd5\u5982\u4e0b\uff1a<\/p>\n<pre>\u6570\u7ec4\u540d[\u7d22\u5f15]<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u4f8b\u5982\uff0c\u8bbf\u95ee myArray \u7684\u7b2c\u4e00\u4e2a\u5143\u7d20\uff1a<\/p>\n<pre>int firstElement = myArray[0];<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u6570\u7ec4\u957f\u5ea6<\/strong><br \/>\u6570\u7ec4\u7684\u957f\u5ea6\u53ef\u4ee5\u901a\u8fc7 length \u5c5e\u6027\u8bbf\u95ee\uff1a<\/p>\n<pre>int arrayLength = myArray.length;<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u793a\u4f8b<\/strong><br \/>\u4ee5\u4e0b\u662f\u521b\u5efa\u4e00\u4e2a\u6570\u7ec4\u5e76\u521d\u59cb\u5316\u5176\u5143\u7d20\u7684\u5b8c\u6574\u793a\u4f8b\uff1a<\/p>\n<pre>int[] myArray = new int[5];\nmyArray[0] = 10;\nmyArray[1] = 20;\nmyArray[2] = 30;\nmyArray[3] = 40;\nmyArray[4] = 50;<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u73b0\u5728\uff0cmyArray \u5305\u542b\u957f\u5ea6\u4e3a 5 \u7684 int \u6570\u7ec4\uff0c\u6570\u7ec4\u5143\u7d20\u7684\u503c\u5206\u522b\u4e3a 10\u300120\u300130\u300140 \u548c 50\u3002<\/p>\n<p>\u4ee5\u4e0a\u5c31\u662fjava\u600e\u4e48\u5efa\u4e00\u4e2a\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":"<p>\u5982\u4f55\u5728 java \u4e2d\u521b\u5efa\u4e00\u4e2a\u6570\u7ec4\uff1f\u58f0\u660e\u6570\u7ec4\uff08\u6570\u636e\u7c7b\u578b[] \u6570\u7ec4\u540d = new \u6570\u636e\u7c7b\u578b[\u957f\u5ea6]\uff09\uff1b\u521d\u59cb\u5316\u6570\u7ec4\uff08\u6570\u7ec4\u540d[\u7d22\u5f15] = \u503c\uff09\uff1b\u8bbf\u95ee\u6570\u7ec4\u5143\u7d20\uff08\u6570\u7ec4\u540d[\u7d22\u5f15]\uff09\uff1b\u83b7\u53d6\u6570\u7ec4\u957f\u5ea6\uff08\u6570\u7ec4\u540d.length\uff09\u3002 \u5982\u4f55\u5728 Java \u4e2d\u521b\u5efa\u4e00\u4e2a\u6570\u7ec4 \u6570\u7ec4\u662f Java \u4e2d\u7528\u4e8e\u5b58\u50a8\u4e00\u7cfb\u5217\u5143\u7d20\u7684\u6570\u636e\u7ed3\u6784\u3002\u521b\u5efa\u6570\u7ec4\u9700\u8981\u4ee5\u4e0b\u6b65\u9aa4\uff1a 1. \u58f0\u660e\u6570\u7ec4\u9996\u5148\uff0c\u58f0\u660e\u4e00\u4e2a\u53d8\u91cf\u6765\u5f15\u7528\u6570\u7ec4\uff0c\u5e76\u6307\u5b9a\u6570\u7ec4\u7684\u7c7b\u578b\u548c\u957f\u5ea6\u3002\u8bed\u6cd5\u5982\u4e0b\uff1a \u6570\u636e\u7c7b\u578b[] \u6570\u7ec4\u540d = new \u6570\u636e\u7c7b\u578b[\u957f\u5ea6]; \u767b\u5f55\u540e\u590d\u5236 \u4f8b\u5982\uff0c\u521b\u5efa\u4e00\u4e2a\u5b58\u50a8 5 \u4e2a int \u7684\u6570\u7ec4\uff1a \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b int[] myArray = new int[5]; \u767b\u5f55\u540e\u590d\u5236 2. \u521d\u59cb\u5316\u6570\u7ec4\u58f0\u660e\u6570\u7ec4\u540e\uff0c\u9700\u8981\u521d\u59cb\u5316\u5404\u4e2a\u5143\u7d20\u3002\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u8bed\u6cd5\uff1a \u6570\u7ec4\u540d[\u7d22\u5f15] = \u503c; \u767b\u5f55\u540e\u590d\u5236 \u4f8b\u5982\uff0c\u521d\u59cb\u5316 myArray \u7684\u7b2c\u4e00\u4e2a\u5143\u7d20\u4e3a 10\uff1a myArray[0] = 10; \u767b\u5f55\u540e\u590d\u5236 3. \u8bbf\u95ee\u6570\u7ec4\u5143\u7d20\u53ef\u4ee5\u4f7f\u7528\u7d22\u5f15\u8bbf\u95ee\u6570\u7ec4\u5143\u7d20\u3002\u8bed\u6cd5\u5982\u4e0b\uff1a \u6570\u7ec4\u540d[\u7d22\u5f15] \u767b\u5f55\u540e\u590d\u5236 \u4f8b\u5982\uff0c\u8bbf\u95ee myArray [&hellip;]<\/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-36666","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/36666","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=36666"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/36666\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=36666"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=36666"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=36666"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}