{"id":38648,"date":"2024-11-26T15:05:04","date_gmt":"2024-11-26T07:05:04","guid":{"rendered":"https:\/\/fwq.ai\/blog\/38648\/"},"modified":"2024-11-26T15:05:04","modified_gmt":"2024-11-26T07:05:04","slug":"java%e4%b8%ad%e6%95%b0%e7%bb%84%e8%bf%94%e5%9b%9e%e5%80%bc%e6%80%8e%e4%b9%88%e5%88%a4%e6%96%ad","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/38648\/","title":{"rendered":"java\u4e2d\u6570\u7ec4\u8fd4\u56de\u503c\u600e\u4e48\u5224\u65ad"},"content":{"rendered":"<blockquote><p>\n  \u5728 java \u4e2d\uff0c\u53ef\u4ee5\u901a\u8fc7\u68c0\u67e5\u6570\u7ec4\u957f\u5ea6\u5224\u65ad\u5176\u8fd4\u56de\u503c\uff1a\u957f\u5ea6\u4e3a 0 \u8868\u793a\u6570\u7ec4\u4e3a\u7a7a\u6216\u672a\u521d\u59cb\u5316\u3002\u957f\u5ea6\u5927\u4e8e 0 \u8868\u793a\u6570\u7ec4\u5df2\u521d\u59cb\u5316\u5e76\u5305\u542b\u5143\u7d20\u3002\u53ef\u4ee5\u6bd4\u8f83\u6570\u7ec4\u957f\u5ea6\u4e0e\u9884\u671f\u503c\uff0c\u4ee5\u786e\u5b9a\u662f\u5426\u7b26\u5408\u7279\u5b9a\u8981\u6c42\u3002\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202411\/15\/2024111504271719066.jpg\" class=\"aligncenter\" title=\"java\u4e2d\u6570\u7ec4\u8fd4\u56de\u503c\u600e\u4e48\u5224\u65ad\u63d2\u56fe\" alt=\"java\u4e2d\u6570\u7ec4\u8fd4\u56de\u503c\u600e\u4e48\u5224\u65ad\u63d2\u56fe\" \/><\/p>\n<p><strong>Java\u4e2d\u5982\u4f55\u5224\u65ad\u6570\u7ec4\u8fd4\u56de\u503c<\/strong><\/p>\n<p>\u5728Java\u4e2d\uff0c\u6570\u7ec4\u8fd4\u56de\u503c\u53ef\u4ee5\u901a\u8fc7\u68c0\u67e5\u5176\u957f\u5ea6\u6765\u5224\u65ad\u3002<\/p>\n<p><strong>\u8be6\u7ec6\u8bf4\u660e\uff1a<\/strong><\/p>\n<ul>\n<li> <strong>\u68c0\u67e5\u957f\u5ea6\u662f\u5426\u4e3a\u96f6\uff1a<\/strong>\u5982\u679c\u6ca1\u6709\u5143\u7d20\uff0c\u6570\u7ec4\u7684\u957f\u5ea6\u4e3a\u96f6\u3002\u8fd9\u8868\u793a\u6570\u7ec4\u662f\u7a7a\u7684\u6216\u672a\u521d\u59cb\u5316\u3002<\/li>\n<\/ul>\n<pre>int[] array = null;\nif (array == null || array.length == 0) {\n    \/\/ \u6570\u7ec4\u4e3a\u7a7a\u6216\u672a\u521d\u59cb\u5316\n}<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<ul>\n<li> <strong>\u68c0\u67e5\u957f\u5ea6\u662f\u5426\u5927\u4e8e\u96f6\uff1a<\/strong>\u5982\u679c\u6570\u7ec4\u5177\u6709\u5143\u7d20\uff0c\u5176\u957f\u5ea6\u5927\u4e8e\u96f6\u3002\u8fd9\u8868\u793a\u6570\u7ec4\u5df2\u521d\u59cb\u5316\u4e14\u5305\u542b\u5143\u7d20\u3002<\/li>\n<\/ul>\n<pre>int[] array = new int[5];\nif (array.length &gt; 0) {\n    \/\/ \u6570\u7ec4\u5df2\u521d\u59cb\u5316\u4e14\u5305\u542b\u5143\u7d20\n}<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<ul>\n<li> <strong>\u6bd4\u8f83\u671f\u671b\u503c\uff1a<\/strong>\u6709\u65f6\uff0c\u60a8\u53ef\u80fd\u9700\u8981\u68c0\u67e5\u6570\u7ec4\u957f\u5ea6\u662f\u5426\u7b49\u4e8e\u7279\u5b9a\u7684\u9884\u671f\u503c\u3002<\/li>\n<\/ul>\n<pre>int expectedLength = 10;\nint[] array = new int[expectedLength];\nif (array.length == expectedLength) {\n    \/\/ \u6570\u7ec4\u5177\u6709\u9884\u671f\u7684\u5143\u7d20\u6570\n}<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u901a\u8fc7\u8fd9\u4e9b\u6280\u672f\uff0c\u60a8\u53ef\u4ee5\u8f7b\u677e\u786e\u5b9aJava\u4e2d\u6570\u7ec4\u8fd4\u56de\u503c\u662f\u5426\u4e3a\u7a7a\u3001\u5df2\u521d\u59cb\u5316\u6216\u5177\u6709\u7279\u5b9a\u957f\u5ea6\u3002<\/p>\n<p><span>\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n<p>\u4ee5\u4e0a\u5c31\u662fjava\u4e2d\u6570\u7ec4\u8fd4\u56de\u503c\u600e\u4e48\u5224\u65ad\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>\u5728 java \u4e2d\uff0c\u53ef\u4ee5\u901a\u8fc7\u68c0\u67e5\u6570\u7ec4\u957f\u5ea6\u5224\u65ad\u5176\u8fd4\u56de\u503c\uff1a\u957f\u5ea6\u4e3a 0 \u8868\u793a\u6570\u7ec4\u4e3a\u7a7a\u6216\u672a\u521d\u59cb\u5316\u3002\u957f\u5ea6\u5927\u4e8e 0 \u8868\u793a\u6570\u7ec4\u5df2\u521d\u59cb\u5316\u5e76\u5305\u542b\u5143\u7d20\u3002\u53ef\u4ee5\u6bd4\u8f83\u6570\u7ec4\u957f\u5ea6\u4e0e\u9884\u671f\u503c\uff0c\u4ee5\u786e\u5b9a\u662f\u5426\u7b26\u5408\u7279\u5b9a\u8981\u6c42\u3002 Java\u4e2d\u5982\u4f55\u5224\u65ad\u6570\u7ec4\u8fd4\u56de\u503c \u5728Java\u4e2d\uff0c\u6570\u7ec4\u8fd4\u56de\u503c\u53ef\u4ee5\u901a\u8fc7\u68c0\u67e5\u5176\u957f\u5ea6\u6765\u5224\u65ad\u3002 \u8be6\u7ec6\u8bf4\u660e\uff1a \u68c0\u67e5\u957f\u5ea6\u662f\u5426\u4e3a\u96f6\uff1a\u5982\u679c\u6ca1\u6709\u5143\u7d20\uff0c\u6570\u7ec4\u7684\u957f\u5ea6\u4e3a\u96f6\u3002\u8fd9\u8868\u793a\u6570\u7ec4\u662f\u7a7a\u7684\u6216\u672a\u521d\u59cb\u5316\u3002 int[] array = null; if (array == null || array.length == 0) { \/\/ \u6570\u7ec4\u4e3a\u7a7a\u6216\u672a\u521d\u59cb\u5316 } \u767b\u5f55\u540e\u590d\u5236 \u68c0\u67e5\u957f\u5ea6\u662f\u5426\u5927\u4e8e\u96f6\uff1a\u5982\u679c\u6570\u7ec4\u5177\u6709\u5143\u7d20\uff0c\u5176\u957f\u5ea6\u5927\u4e8e\u96f6\u3002\u8fd9\u8868\u793a\u6570\u7ec4\u5df2\u521d\u59cb\u5316\u4e14\u5305\u542b\u5143\u7d20\u3002 int[] array = new int[5]; if (array.length &gt; 0) { \/\/ \u6570\u7ec4\u5df2\u521d\u59cb\u5316\u4e14\u5305\u542b\u5143\u7d20 } \u767b\u5f55\u540e\u590d\u5236 \u6bd4\u8f83\u671f\u671b\u503c\uff1a\u6709\u65f6\uff0c\u60a8\u53ef\u80fd\u9700\u8981\u68c0\u67e5\u6570\u7ec4\u957f\u5ea6\u662f\u5426\u7b49\u4e8e\u7279\u5b9a\u7684\u9884\u671f\u503c\u3002 int expectedLength = 10; int[] array = new int[expectedLength]; if (array.length [&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-38648","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/38648","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=38648"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/38648\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=38648"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=38648"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=38648"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}