{"id":66663,"date":"2025-05-03T16:04:43","date_gmt":"2025-05-03T08:04:43","guid":{"rendered":"https:\/\/fwq.ai\/blog\/66663\/"},"modified":"2025-05-03T16:04:43","modified_gmt":"2025-05-03T08:04:43","slug":"java%e4%ba%8c%e7%bb%b4%e6%95%b0%e7%bb%84%e6%80%8e%e4%b9%88%e8%b0%83%e7%94%a8%e6%96%b9%e6%b3%95-2","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/66663\/","title":{"rendered":"java\u4e8c\u7ef4\u6570\u7ec4\u600e\u4e48\u8c03\u7528\u65b9\u6cd5"},"content":{"rendered":"<blockquote><p>\n  \u8c03\u7528 java \u4e8c\u7ef4\u6570\u7ec4\u4e2d\u7684\u65b9\u6cd5\uff1a\u76f4\u63a5\u8c03\u7528\uff1a\u5982\u679c\u6570\u7ec4\u5143\u7d20\u662f\u5bf9\u8c61\uff0c\u53ef\u76f4\u63a5\u8c03\u7528\u5176\u65b9\u6cd5\u3002\u904d\u5386\u8c03\u7528\uff1a\u4f7f\u7528\u5d4c\u5957\u5faa\u73af\u904d\u5386\u6570\u7ec4\uff0c\u5bf9\u6bcf\u4e2a\u5143\u7d20\u6267\u884c\u76f8\u540c\u7684\u65b9\u6cd5\u3002\u6d41\u5f0f\u8c03\u7528\uff1a\u4f7f\u7528 java 8 \u6d41 api \u6d41\u5f0f\u6267\u884c\u64cd\u4f5c\uff0c\u51cf\u5c11\u4ee3\u7801\u5197\u4f59\u3002\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202411\/16\/2024111612211841991.jpg\" class=\"aligncenter\" title=\"java\u4e8c\u7ef4\u6570\u7ec4\u600e\u4e48\u8c03\u7528\u65b9\u6cd5\u63d2\u56fe\" alt=\"java\u4e8c\u7ef4\u6570\u7ec4\u600e\u4e48\u8c03\u7528\u65b9\u6cd5\u63d2\u56fe\" \/><\/p>\n<p><strong>\u5982\u4f55\u8c03\u7528 Java \u4e8c\u7ef4\u6570\u7ec4\u4e2d\u7684\u65b9\u6cd5<\/strong><\/p>\n<p><strong>\u76f4\u63a5\u8c03\u7528<\/strong><\/p>\n<p>\u5982\u679c\u4e8c\u7ef4\u6570\u7ec4\u7684\u6bcf\u4e2a\u5143\u7d20\u90fd\u662f\u4e00\u4e2a\u5bf9\u8c61\uff0c\u90a3\u4e48\u53ef\u4ee5\u76f4\u63a5\u8c03\u7528\u8be5\u5143\u7d20\u7684\u65b9\u6cd5\u3002\u4f8b\u5982\uff1a<\/p>\n<pre>int[][] array = {{1, 2, 3}, {4, 5, 6}};\nSystem.out.println(array[0][0].getClass()); \/\/ \u8f93\u51fa\uff1aclass java.lang.Integer<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u904d\u5386\u8c03\u7528<\/strong><\/p>\n<p><span>\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n<p>\u5982\u679c\u9700\u8981\u5bf9\u4e8c\u7ef4\u6570\u7ec4\u4e2d\u7684\u6240\u6709\u5143\u7d20\u6267\u884c\u76f8\u540c\u7684\u65b9\u6cd5\uff0c\u53ef\u4ee5\u4f7f\u7528\u5d4c\u5957\u5faa\u73af\u8fdb\u884c\u904d\u5386\u3002\u4f8b\u5982\uff1a<\/p>\n<pre>for (int i = 0; i &lt; array.length; i++) {\n    for (int j = 0; j &lt; array[i].length; j++) {\n        System.out.println(array[i][j].getClass());\n    }\n}<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u6d41\u5f0f\u8c03\u7528<\/strong><\/p>\n<p>Java 8 \u4e2d\u5f15\u5165\u4e86\u6d41 API\uff0c\u53ef\u4ee5\u66f4\u65b9\u4fbf\u5730\u5728\u6570\u7ec4\u4e0a\u8fdb\u884c\u64cd\u4f5c\u3002\u4f8b\u5982\uff1a<\/p>\n<pre>Arrays.stream(array)\n        .flatMapToInt(row -&gt; Arrays.stream(row))\n        .forEach(System.out::println);<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u4ee5\u4e0a\u5c31\u662fjava\u4e8c\u7ef4\u6570\u7ec4\u600e\u4e48\u8c03\u7528\u65b9\u6cd5\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>\u8c03\u7528 java \u4e8c\u7ef4\u6570\u7ec4\u4e2d\u7684\u65b9\u6cd5\uff1a\u76f4\u63a5\u8c03\u7528\uff1a\u5982\u679c\u6570\u7ec4\u5143\u7d20\u662f\u5bf9\u8c61\uff0c\u53ef\u76f4\u63a5\u8c03\u7528\u5176\u65b9\u6cd5\u3002\u904d\u5386\u8c03\u7528\uff1a\u4f7f\u7528\u5d4c\u5957\u5faa\u73af\u904d\u5386\u6570\u7ec4\uff0c\u5bf9\u6bcf\u4e2a\u5143\u7d20\u6267\u884c\u76f8\u540c\u7684\u65b9\u6cd5\u3002\u6d41\u5f0f\u8c03\u7528\uff1a\u4f7f\u7528 java 8 \u6d41 api \u6d41\u5f0f\u6267\u884c\u64cd\u4f5c\uff0c\u51cf\u5c11\u4ee3\u7801\u5197\u4f59\u3002 \u5982\u4f55\u8c03\u7528 Java \u4e8c\u7ef4\u6570\u7ec4\u4e2d\u7684\u65b9\u6cd5 \u76f4\u63a5\u8c03\u7528 \u5982\u679c\u4e8c\u7ef4\u6570\u7ec4\u7684\u6bcf\u4e2a\u5143\u7d20\u90fd\u662f\u4e00\u4e2a\u5bf9\u8c61\uff0c\u90a3\u4e48\u53ef\u4ee5\u76f4\u63a5\u8c03\u7528\u8be5\u5143\u7d20\u7684\u65b9\u6cd5\u3002\u4f8b\u5982\uff1a int[][] array = {{1, 2, 3}, {4, 5, 6}}; System.out.println(array[0][0].getClass()); \/\/ \u8f93\u51fa\uff1aclass java.lang.Integer \u767b\u5f55\u540e\u590d\u5236 \u904d\u5386\u8c03\u7528 \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b \u5982\u679c\u9700\u8981\u5bf9\u4e8c\u7ef4\u6570\u7ec4\u4e2d\u7684\u6240\u6709\u5143\u7d20\u6267\u884c\u76f8\u540c\u7684\u65b9\u6cd5\uff0c\u53ef\u4ee5\u4f7f\u7528\u5d4c\u5957\u5faa\u73af\u8fdb\u884c\u904d\u5386\u3002\u4f8b\u5982\uff1a for (int i = 0; i &lt; array.length; i++) { for (int j = 0; j &lt; array[i].length; j++) { System.out.println(array[i][j].getClass()); } } \u767b\u5f55\u540e\u590d\u5236 \u6d41\u5f0f\u8c03\u7528 [&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-66663","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/66663","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=66663"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/66663\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=66663"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=66663"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=66663"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}