{"id":37184,"date":"2024-11-26T08:37:29","date_gmt":"2024-11-26T00:37:29","guid":{"rendered":"https:\/\/fwq.ai\/blog\/37184\/"},"modified":"2024-11-26T08:37:29","modified_gmt":"2024-11-26T00:37:29","slug":"java%e6%96%b9%e6%b3%95%e8%b0%83%e7%94%a8%e6%80%8e%e4%b9%88%e8%b0%83%e7%94%a8%e6%95%b0%e7%bb%84","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/37184\/","title":{"rendered":"Java\u65b9\u6cd5\u8c03\u7528\u600e\u4e48\u8c03\u7528\u6570\u7ec4"},"content":{"rendered":"<blockquote><p>\n  java \u65b9\u6cd5\u53ef\u901a\u8fc7\u591a\u79cd\u65b9\u5f0f\u8c03\u7528\u6570\u7ec4\uff1a\u6309\u503c\u4f20\u9012\u6570\u7ec4\uff1a\u65b9\u6cd5\u4f1a\u63a5\u6536\u5230\u6570\u7ec4\u526f\u672c\uff0c\u5bf9\u526f\u672c\u7684\u66f4\u6539\u4e0d\u5f71\u54cd\u539f\u59cb\u6570\u7ec4\u3002\u6309\u5f15\u7528\u4f20\u9012\u6570\u7ec4\uff1a\u4f7f\u7528 final \u4fee\u9970\u7b26\u58f0\u660e\u6570\u7ec4\uff0c\u65b9\u6cd5\u53ef\u76f4\u63a5\u8bbf\u95ee\u539f\u59cb\u6570\u7ec4\u3002\u4f7f\u7528\u53ef\u53d8\u53c2\u6570\uff1a\u65b9\u6cd5\u53ef\u63a5\u6536\u4efb\u610f\u6570\u91cf\u7684\u6570\u7ec4\uff0c\u4f7f\u7528\u4e09\u4e2a\u70b9 &#8230; \u540e\u8ddf\u6570\u7ec4\u7c7b\u578b\u58f0\u660e\u3002\u5728\u65b9\u6cd5\u4e2d\uff0c\u53ef\u901a\u8fc7\u6570\u7ec4\u4e0b\u6807\u8bbf\u95ee\u5143\u7d20\uff0c\u4e0b\u6807\u4ece 0 \u5f00\u59cb\u3002\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202411\/13\/2024111302241775683.jpg\" class=\"aligncenter\" title=\"Java\u65b9\u6cd5\u8c03\u7528\u600e\u4e48\u8c03\u7528\u6570\u7ec4\u63d2\u56fe\" alt=\"Java\u65b9\u6cd5\u8c03\u7528\u600e\u4e48\u8c03\u7528\u6570\u7ec4\u63d2\u56fe\" \/><\/p>\n<p><strong>Java \u65b9\u6cd5\u4e2d\u8c03\u7528\u6570\u7ec4<\/strong><\/p>\n<p>Java \u65b9\u6cd5\u53ef\u4ee5\u8c03\u7528\u6570\u7ec4\uff0c\u65b9\u6cd5\u4e2d\u53ef\u4ee5\u4f7f\u7528\u6570\u7ec4\u4e2d\u7684\u503c\u5e76\u5bf9\u5176\u8fdb\u884c\u64cd\u4f5c\u3002\u8c03\u7528\u6570\u7ec4\u7684\u65b9\u5f0f\u6709\u591a\u79cd\uff0c\u5177\u4f53\u53d6\u51b3\u4e8e\u65b9\u6cd5\u9700\u8981\u5982\u4f55\u8bbf\u95ee\u6570\u7ec4\u3002<\/p>\n<p><strong>\u6309\u503c\u4f20\u9012\u6570\u7ec4<\/strong><\/p>\n<p>\u6700\u5e38\u89c1\u7684\u65b9\u6cd5\u662f\u6309\u503c\u4f20\u9012\u6570\u7ec4\u3002\u8fd9\u610f\u5473\u7740\u65b9\u6cd5\u4f1a\u63a5\u6536\u5230\u6570\u7ec4\u7684\u526f\u672c\uff0c\u5bf9\u526f\u672c\u7684\u4efb\u4f55\u66f4\u6539\u90fd\u4e0d\u4f1a\u5f71\u54cd\u539f\u59cb\u6570\u7ec4\u3002\u8981\u6309\u503c\u4f20\u9012\u6570\u7ec4\uff0c\u8bf7\u4f7f\u7528\u6570\u7ec4\u7c7b\u578b\u4f5c\u4e3a\u53c2\u6570\u7c7b\u578b\u3002<\/p>\n<p><span>\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n<pre>public void myMethod(int[] arr) {\n    \/\/ \u5bf9 arr \u7684\u66f4\u6539\u4e0d\u4f1a\u5f71\u54cd\u539f\u59cb\u6570\u7ec4\n}<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u6309\u5f15\u7528\u4f20\u9012\u6570\u7ec4<\/strong><\/p>\n<p>\u6709\u65f6\uff0c\u65b9\u6cd5\u9700\u8981\u76f4\u63a5\u8bbf\u95ee\u539f\u59cb\u6570\u7ec4\uff0c\u800c\u4e0d\u662f\u526f\u672c\u3002\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u53ef\u4ee5\u4f7f\u7528 final \u4fee\u9970\u7b26\u5c06\u6570\u7ec4\u58f0\u660e\u4e3a\u6309\u5f15\u7528\u4f20\u9012\u3002<\/p>\n<pre>public void myMethod(final int[] arr) {\n    \/\/ \u5bf9 arr \u7684\u66f4\u6539\u4f1a\u5f71\u54cd\u539f\u59cb\u6570\u7ec4\n}<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u4f7f\u7528\u53ef\u53d8\u53c2\u6570\u8c03\u7528\u6570\u7ec4<\/strong><\/p>\n<p>\u5bf9\u4e8e\u53ef\u4ee5\u63a5\u53d7\u4efb\u610f\u6570\u91cf\u53c2\u6570\u7684\u65b9\u6cd5\uff0c\u53ef\u4ee5\u4f7f\u7528\u53ef\u53d8\u53c2\u6570\uff08\u4e5f\u79f0\u4e3a\u4e0d\u5b9a\u957f\u53c2\u6570\uff09\u6765\u4f20\u9012\u4e00\u4e2a\u6216\u591a\u4e2a\u6570\u7ec4\u3002\u4f7f\u7528\u4e09\u4e2a\u70b9 &#8230; \u540e\u8ddf\u6570\u7ec4\u7c7b\u578b\u4f5c\u4e3a\u53c2\u6570\u7c7b\u578b\u6765\u58f0\u660e\u53ef\u53d8\u53c2\u6570\u3002<\/p>\n<pre>public void myMethod(int... arr) {\n    \/\/ arr \u662f\u4e00\u4e2a int \u6570\u7ec4\uff0c\u53ef\u4ee5\u5305\u542b\u4efb\u610f\u6570\u91cf\u7684\u5143\u7d20\n}<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u5728\u65b9\u6cd5\u4e2d\u4f7f\u7528\u6570\u7ec4<\/strong><\/p>\n<p>\u5728\u65b9\u6cd5\u4e2d\u4f7f\u7528\u6570\u7ec4\u65f6\uff0c\u53ef\u4ee5\u4f7f\u7528\u6570\u7ec4\u4e0b\u6807\u8bbf\u95ee\u5143\u7d20\u3002\u6570\u7ec4\u4e0b\u6807\u4ece 0 \u5f00\u59cb\uff0c\u56e0\u6b64\u7b2c\u4e00\u4e2a\u5143\u7d20\u4f4d\u4e8e\u4e0b\u6807 0 \u5904\u3002\u4e5f\u53ef\u4ee5\u4f7f\u7528 length \u5c5e\u6027\u6765\u83b7\u53d6\u6570\u7ec4\u7684\u957f\u5ea6\u3002<\/p>\n<pre>public void myMethod(int[] arr) {\n    int firstElement = arr[0];\n    int lastElement = arr[arr.length - 1];\n}<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u7ed3\u8bba<\/strong><\/p>\n<p>\u901a\u8fc7\u6309\u503c\u6216\u6309\u5f15\u7528\u4f20\u9012\u6570\u7ec4\uff0c\u4ee5\u53ca\u4f7f\u7528\u53ef\u53d8\u53c2\u6570\uff0cJava \u65b9\u6cd5\u53ef\u4ee5\u7075\u6d3b\u5730\u8c03\u7528\u6570\u7ec4\u5e76\u8bbf\u95ee\u5176\u503c\u3002\u4e86\u89e3\u8fd9\u4e9b\u6280\u672f\u5bf9\u4e8e\u7f16\u5199\u9ad8\u6548\u4e14\u53ef\u7ef4\u62a4\u7684\u4ee3\u7801\u81f3\u5173\u91cd\u8981\u3002<\/p>\n<p>\u4ee5\u4e0a\u5c31\u662fJava\u65b9\u6cd5\u8c03\u7528\u600e\u4e48\u8c03\u7528\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>java \u65b9\u6cd5\u53ef\u901a\u8fc7\u591a\u79cd\u65b9\u5f0f\u8c03\u7528\u6570\u7ec4\uff1a\u6309\u503c\u4f20\u9012\u6570\u7ec4\uff1a\u65b9\u6cd5\u4f1a\u63a5\u6536\u5230\u6570\u7ec4\u526f\u672c\uff0c\u5bf9\u526f\u672c\u7684\u66f4\u6539\u4e0d\u5f71\u54cd\u539f\u59cb\u6570\u7ec4\u3002\u6309\u5f15\u7528\u4f20\u9012\u6570\u7ec4\uff1a\u4f7f\u7528 final \u4fee\u9970\u7b26\u58f0\u660e\u6570\u7ec4\uff0c\u65b9\u6cd5\u53ef\u76f4\u63a5\u8bbf\u95ee\u539f\u59cb\u6570\u7ec4\u3002\u4f7f\u7528\u53ef\u53d8\u53c2\u6570\uff1a\u65b9\u6cd5\u53ef\u63a5\u6536\u4efb\u610f\u6570\u91cf\u7684\u6570\u7ec4\uff0c\u4f7f\u7528\u4e09\u4e2a\u70b9 &#8230; \u540e\u8ddf\u6570\u7ec4\u7c7b\u578b\u58f0\u660e\u3002\u5728\u65b9\u6cd5\u4e2d\uff0c\u53ef\u901a\u8fc7\u6570\u7ec4\u4e0b\u6807\u8bbf\u95ee\u5143\u7d20\uff0c\u4e0b\u6807\u4ece 0 \u5f00\u59cb\u3002 Java \u65b9\u6cd5\u4e2d\u8c03\u7528\u6570\u7ec4 Java \u65b9\u6cd5\u53ef\u4ee5\u8c03\u7528\u6570\u7ec4\uff0c\u65b9\u6cd5\u4e2d\u53ef\u4ee5\u4f7f\u7528\u6570\u7ec4\u4e2d\u7684\u503c\u5e76\u5bf9\u5176\u8fdb\u884c\u64cd\u4f5c\u3002\u8c03\u7528\u6570\u7ec4\u7684\u65b9\u5f0f\u6709\u591a\u79cd\uff0c\u5177\u4f53\u53d6\u51b3\u4e8e\u65b9\u6cd5\u9700\u8981\u5982\u4f55\u8bbf\u95ee\u6570\u7ec4\u3002 \u6309\u503c\u4f20\u9012\u6570\u7ec4 \u6700\u5e38\u89c1\u7684\u65b9\u6cd5\u662f\u6309\u503c\u4f20\u9012\u6570\u7ec4\u3002\u8fd9\u610f\u5473\u7740\u65b9\u6cd5\u4f1a\u63a5\u6536\u5230\u6570\u7ec4\u7684\u526f\u672c\uff0c\u5bf9\u526f\u672c\u7684\u4efb\u4f55\u66f4\u6539\u90fd\u4e0d\u4f1a\u5f71\u54cd\u539f\u59cb\u6570\u7ec4\u3002\u8981\u6309\u503c\u4f20\u9012\u6570\u7ec4\uff0c\u8bf7\u4f7f\u7528\u6570\u7ec4\u7c7b\u578b\u4f5c\u4e3a\u53c2\u6570\u7c7b\u578b\u3002 \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b public void myMethod(int[] arr) { \/\/ \u5bf9 arr \u7684\u66f4\u6539\u4e0d\u4f1a\u5f71\u54cd\u539f\u59cb\u6570\u7ec4 } \u767b\u5f55\u540e\u590d\u5236 \u6309\u5f15\u7528\u4f20\u9012\u6570\u7ec4 \u6709\u65f6\uff0c\u65b9\u6cd5\u9700\u8981\u76f4\u63a5\u8bbf\u95ee\u539f\u59cb\u6570\u7ec4\uff0c\u800c\u4e0d\u662f\u526f\u672c\u3002\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u53ef\u4ee5\u4f7f\u7528 final \u4fee\u9970\u7b26\u5c06\u6570\u7ec4\u58f0\u660e\u4e3a\u6309\u5f15\u7528\u4f20\u9012\u3002 public void myMethod(final int[] arr) { \/\/ \u5bf9 arr \u7684\u66f4\u6539\u4f1a\u5f71\u54cd\u539f\u59cb\u6570\u7ec4 } \u767b\u5f55\u540e\u590d\u5236 \u4f7f\u7528\u53ef\u53d8\u53c2\u6570\u8c03\u7528\u6570\u7ec4 \u5bf9\u4e8e\u53ef\u4ee5\u63a5\u53d7\u4efb\u610f\u6570\u91cf\u53c2\u6570\u7684\u65b9\u6cd5\uff0c\u53ef\u4ee5\u4f7f\u7528\u53ef\u53d8\u53c2\u6570\uff08\u4e5f\u79f0\u4e3a\u4e0d\u5b9a\u957f\u53c2\u6570\uff09\u6765\u4f20\u9012\u4e00\u4e2a\u6216\u591a\u4e2a\u6570\u7ec4\u3002\u4f7f\u7528\u4e09\u4e2a\u70b9 &#8230; \u540e\u8ddf\u6570\u7ec4\u7c7b\u578b\u4f5c\u4e3a\u53c2\u6570\u7c7b\u578b\u6765\u58f0\u660e\u53ef\u53d8\u53c2\u6570\u3002 public void myMethod(int&#8230; arr) { \/\/ arr \u662f\u4e00\u4e2a 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-37184","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/37184","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=37184"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/37184\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=37184"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=37184"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=37184"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}