{"id":39501,"date":"2024-11-26T08:48:11","date_gmt":"2024-11-26T00:48:11","guid":{"rendered":"https:\/\/fwq.ai\/blog\/39501\/"},"modified":"2024-11-26T08:48:11","modified_gmt":"2024-11-26T00:48:11","slug":"java%e6%80%8e%e4%b9%88%e5%8f%96%e5%87%ba%e6%95%b0%e7%bb%84%e6%9c%80%e5%90%8e%e4%b8%80%e4%bd%8d","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/39501\/","title":{"rendered":"java\u600e\u4e48\u53d6\u51fa\u6570\u7ec4\u6700\u540e\u4e00\u4f4d"},"content":{"rendered":"<blockquote><p>\n  \u8981\u53d6\u51fa java \u6570\u7ec4\u7684\u6700\u540e\u4e00\u4f4d\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u4e09\u79cd\u65b9\u6cd5\uff1a\u4f7f\u7528\u6570\u7ec4\u957f\u5ea6\u548c\u51cf\u6cd5\u4f7f\u7528 length \u65b9\u6cd5\u4f7f\u7528 arrayutils \u7c7b (apache commons)\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202411\/16\/2024111611454184284.jpg\" class=\"aligncenter\" title=\"java\u600e\u4e48\u53d6\u51fa\u6570\u7ec4\u6700\u540e\u4e00\u4f4d\u63d2\u56fe\" alt=\"java\u600e\u4e48\u53d6\u51fa\u6570\u7ec4\u6700\u540e\u4e00\u4f4d\u63d2\u56fe\" \/><\/p>\n<p><strong>\u5982\u4f55\u53d6\u51fa Java \u6570\u7ec4\u6700\u540e\u4e00\u4f4d\uff1f<\/strong><\/p>\n<p>\u8981\u53d6\u51fa Java \u6570\u7ec4\u6700\u540e\u4e00\u4f4d\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u65b9\u6cd5\u4e4b\u4e00\uff1a<\/p>\n<p><strong>1. \u4f7f\u7528\u6570\u7ec4\u957f\u5ea6\u548c\u51cf\u6cd5<\/strong><\/p>\n<pre>int[] myArray = {1, 2, 3, 4, 5};\nint lastIndex = myArray.length - 1;\nint lastElement = myArray[lastIndex];<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>2. \u4f7f\u7528 length \u65b9\u6cd5<\/strong><\/p>\n<p><span>\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n<p>length \u65b9\u6cd5\u8fd4\u56de\u6570\u7ec4\u7684\u957f\u5ea6\u3002\u53ef\u4ee5\u4f7f\u7528\u8fd9\u4e2a\u503c\u51cf\u53bb 1 \u6765\u83b7\u53d6\u6700\u540e\u4e00\u4f4d\u7684\u7d22\u5f15\u3002<\/p>\n<pre>int[] myArray = {1, 2, 3, 4, 5};\nint lastIndex = myArray.length - 1;\nint lastElement = myArray[lastIndex];<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>3. \u4f7f\u7528 ArrayUtils \u7c7b (Apache Commons)<\/strong><\/p>\n<p>ArrayUtils \u7c7b\u63d0\u4f9b\u4e86 last \u65b9\u6cd5\uff0c\u53ef\u4ee5\u4f7f\u7528\u5b83\u76f4\u63a5\u8fd4\u56de\u6570\u7ec4\u6700\u540e\u4e00\u4f4d\u3002<\/p>\n<pre>import org.apache.commons.lang3.ArrayUtils;\n\nint[] myArray = {1, 2, 3, 4, 5};\nint lastElement = ArrayUtils.last(myArray);<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u4ee5\u4e0a\u5c31\u662fjava\u600e\u4e48\u53d6\u51fa\u6570\u7ec4\u6700\u540e\u4e00\u4f4d\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>\u8981\u53d6\u51fa java \u6570\u7ec4\u7684\u6700\u540e\u4e00\u4f4d\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u4e09\u79cd\u65b9\u6cd5\uff1a\u4f7f\u7528\u6570\u7ec4\u957f\u5ea6\u548c\u51cf\u6cd5\u4f7f\u7528 length \u65b9\u6cd5\u4f7f\u7528 arrayutils \u7c7b (apache commons) \u5982\u4f55\u53d6\u51fa Java \u6570\u7ec4\u6700\u540e\u4e00\u4f4d\uff1f \u8981\u53d6\u51fa Java \u6570\u7ec4\u6700\u540e\u4e00\u4f4d\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u65b9\u6cd5\u4e4b\u4e00\uff1a 1. \u4f7f\u7528\u6570\u7ec4\u957f\u5ea6\u548c\u51cf\u6cd5 int[] myArray = {1, 2, 3, 4, 5}; int lastIndex = myArray.length &#8211; 1; int lastElement = myArray[lastIndex]; \u767b\u5f55\u540e\u590d\u5236 \u767b\u5f55\u540e\u590d\u5236 2. \u4f7f\u7528 length \u65b9\u6cd5 \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b length \u65b9\u6cd5\u8fd4\u56de\u6570\u7ec4\u7684\u957f\u5ea6\u3002\u53ef\u4ee5\u4f7f\u7528\u8fd9\u4e2a\u503c\u51cf\u53bb 1 \u6765\u83b7\u53d6\u6700\u540e\u4e00\u4f4d\u7684\u7d22\u5f15\u3002 int[] myArray = {1, 2, 3, 4, 5}; int [&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-39501","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/39501","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=39501"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/39501\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=39501"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=39501"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=39501"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}