{"id":64668,"date":"2025-05-03T12:38:29","date_gmt":"2025-05-03T04:38:29","guid":{"rendered":"https:\/\/fwq.ai\/blog\/64668\/"},"modified":"2025-05-03T12:38:29","modified_gmt":"2025-05-03T04:38:29","slug":"java%e6%80%8e%e4%b9%88%e5%b0%86%e5%95%86%e5%93%81%e4%bf%a1%e6%81%af%e6%94%be%e5%9c%a8%e6%95%b0%e7%bb%84%e4%b8%ad-2","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/64668\/","title":{"rendered":"java\u600e\u4e48\u5c06\u5546\u54c1\u4fe1\u606f\u653e\u5728\u6570\u7ec4\u4e2d"},"content":{"rendered":"<blockquote><p>\n  \u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u6b65\u9aa4\u4f7f\u7528\u6570\u7ec4\u5b58\u50a8\u5546\u54c1\u4fe1\u606f\uff1a\u5b9a\u4e49\u4e00\u4e2a\u5b57\u7b26\u4e32\u6570\u7ec4\u5e76\u6307\u5b9a\u6570\u7ec4\u5927\u5c0f\u3002\u4f7f\u7528\u6570\u7ec4\u7d22\u5f15\u586b\u5145\u6570\u7ec4\u4e2d\u7684\u5143\u7d20\u3002\u901a\u8fc7\u6570\u7ec4\u7d22\u5f15\u8bbf\u95ee\u6570\u7ec4\u4e2d\u7684\u5143\u7d20\u3002\u4f7f\u7528\u5faa\u73af\u904d\u5386\u6570\u7ec4\u4e2d\u7684\u6240\u6709\u5143\u7d20\u3002\u4f7f\u7528 length \u5c5e\u6027\u786e\u5b9a\u6570\u7ec4\u5927\u5c0f\u3002\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202411\/04\/2024110406161083692.jpg\" class=\"aligncenter\" title=\"java\u600e\u4e48\u5c06\u5546\u54c1\u4fe1\u606f\u653e\u5728\u6570\u7ec4\u4e2d\u63d2\u56fe\" alt=\"java\u600e\u4e48\u5c06\u5546\u54c1\u4fe1\u606f\u653e\u5728\u6570\u7ec4\u4e2d\u63d2\u56fe\" \/><\/p>\n<p><strong>\u5982\u4f55\u4f7f\u7528\u6570\u7ec4\u5b58\u50a8\u5546\u54c1\u4fe1\u606f\uff1f<\/strong><\/p>\n<p>\u4e3a\u4e86\u5c06\u5546\u54c1\u4fe1\u606f\u5b58\u50a8\u5728\u6570\u7ec4\u4e2d\uff0cJava \u63d0\u4f9b\u4e86\u4ee5\u4e0b\u6b65\u9aa4\uff1a<\/p>\n<p><strong>1. \u5b9a\u4e49\u6570\u7ec4\uff1a<\/strong><\/p>\n<pre>String[] products = new String[5];<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u5176\u4e2d\uff0cproducts \u662f\u4e00\u4e2a\u53ef\u4ee5\u5b58\u50a8 5 \u4e2a\u5b57\u7b26\u4e32\u7684\u6570\u7ec4\u3002<\/p>\n<p><span>\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n<p><strong>2. \u586b\u5145\u6570\u7ec4\uff1a<\/strong><br \/>\u53ef\u4ee5\u901a\u8fc7\u6570\u7ec4\u7d22\u5f15\u6765\u586b\u5145\u6570\u7ec4\u4e2d\u7684\u5143\u7d20\uff1a<\/p>\n<pre>products[0] = \"\u5546\u54c1 A\";\nproducts[1] = \"\u5546\u54c1 B\";\nproducts[2] = \"\u5546\u54c1 C\";<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>3. \u83b7\u53d6\u6570\u7ec4\u5143\u7d20\uff1a<\/strong><br \/>\u4e5f\u53ef\u4ee5\u901a\u8fc7\u6570\u7ec4\u7d22\u5f15\u8bbf\u95ee\u6570\u7ec4\u4e2d\u7684\u5143\u7d20\uff1a<\/p>\n<pre>String firstProduct = products[0]; \/\/ \u83b7\u53d6\u7b2c\u4e00\u4e2a\u5546\u54c1\u4fe1\u606f<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>4. \u904d\u5386\u6570\u7ec4\uff1a<\/strong><br \/>\u53ef\u4ee5\u4f7f\u7528\u5faa\u73af\u6765\u904d\u5386\u6570\u7ec4\u4e2d\u7684\u6240\u6709\u5143\u7d20\uff1a<\/p>\n<pre>for (String product : products) {\n    System.out.println(product); \/\/ \u6253\u5370\u6bcf\u4e2a\u5546\u54c1\u4fe1\u606f\n}<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>5. \u786e\u5b9a\u6570\u7ec4\u5927\u5c0f\uff1a<\/strong><br \/>\u53ef\u4ee5\u4f7f\u7528 length \u5c5e\u6027\u83b7\u53d6\u6570\u7ec4\u7684\u5927\u5c0f\uff1a<\/p>\n<pre>int numProducts = products.length; \/\/ \u83b7\u53d6\u6570\u7ec4\u4e2d\u5546\u54c1\u7684\u6570\u91cf<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u4ee5\u4e0a\u5c31\u662fjava\u600e\u4e48\u5c06\u5546\u54c1\u4fe1\u606f\u653e\u5728\u6570\u7ec4\u4e2d\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8IDCBABY\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u6b65\u9aa4\u4f7f\u7528\u6570\u7ec4\u5b58\u50a8\u5546\u54c1\u4fe1\u606f\uff1a\u5b9a\u4e49\u4e00\u4e2a\u5b57\u7b26\u4e32\u6570\u7ec4\u5e76\u6307\u5b9a\u6570\u7ec4\u5927\u5c0f\u3002\u4f7f\u7528\u6570\u7ec4\u7d22\u5f15\u586b\u5145\u6570\u7ec4\u4e2d\u7684\u5143\u7d20\u3002\u901a\u8fc7\u6570\u7ec4\u7d22\u5f15\u8bbf\u95ee\u6570\u7ec4\u4e2d\u7684\u5143\u7d20\u3002\u4f7f\u7528\u5faa\u73af\u904d\u5386\u6570\u7ec4\u4e2d\u7684\u6240\u6709\u5143\u7d20\u3002\u4f7f\u7528 length \u5c5e\u6027\u786e\u5b9a\u6570\u7ec4\u5927\u5c0f\u3002 \u5982\u4f55\u4f7f\u7528\u6570\u7ec4\u5b58\u50a8\u5546\u54c1\u4fe1\u606f\uff1f \u4e3a\u4e86\u5c06\u5546\u54c1\u4fe1\u606f\u5b58\u50a8\u5728\u6570\u7ec4\u4e2d\uff0cJava \u63d0\u4f9b\u4e86\u4ee5\u4e0b\u6b65\u9aa4\uff1a 1. \u5b9a\u4e49\u6570\u7ec4\uff1a String[] products = new String[5]; \u767b\u5f55\u540e\u590d\u5236 \u5176\u4e2d\uff0cproducts \u662f\u4e00\u4e2a\u53ef\u4ee5\u5b58\u50a8 5 \u4e2a\u5b57\u7b26\u4e32\u7684\u6570\u7ec4\u3002 \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b 2. \u586b\u5145\u6570\u7ec4\uff1a\u53ef\u4ee5\u901a\u8fc7\u6570\u7ec4\u7d22\u5f15\u6765\u586b\u5145\u6570\u7ec4\u4e2d\u7684\u5143\u7d20\uff1a products[0] = &#8220;\u5546\u54c1 A&#8221;; products[1] = &#8220;\u5546\u54c1 B&#8221;; products[2] = &#8220;\u5546\u54c1 C&#8221;; \u767b\u5f55\u540e\u590d\u5236 3. \u83b7\u53d6\u6570\u7ec4\u5143\u7d20\uff1a\u4e5f\u53ef\u4ee5\u901a\u8fc7\u6570\u7ec4\u7d22\u5f15\u8bbf\u95ee\u6570\u7ec4\u4e2d\u7684\u5143\u7d20\uff1a String firstProduct = products[0]; \/\/ \u83b7\u53d6\u7b2c\u4e00\u4e2a\u5546\u54c1\u4fe1\u606f \u767b\u5f55\u540e\u590d\u5236 4. \u904d\u5386\u6570\u7ec4\uff1a\u53ef\u4ee5\u4f7f\u7528\u5faa\u73af\u6765\u904d\u5386\u6570\u7ec4\u4e2d\u7684\u6240\u6709\u5143\u7d20\uff1a for (String product : products) { System.out.println(product); \/\/ \u6253\u5370\u6bcf\u4e2a\u5546\u54c1\u4fe1\u606f } [&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-64668","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/64668","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=64668"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/64668\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=64668"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=64668"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=64668"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}