{"id":65240,"date":"2025-05-03T14:58:28","date_gmt":"2025-05-03T06:58:28","guid":{"rendered":"https:\/\/fwq.ai\/blog\/65240\/"},"modified":"2025-05-03T14:58:28","modified_gmt":"2025-05-03T06:58:28","slug":"java%e6%95%b0%e7%bb%84%e6%80%8e%e4%b9%88%e4%bc%a0-2","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/65240\/","title":{"rendered":"java\u6570\u7ec4\u600e\u4e48\u4f20"},"content":{"rendered":"<blockquote><p>\n  java \u4e2d\u6570\u7ec4\u4f5c\u4e3a\u53c2\u6570\u4f20\u9012\u7684\u65b9\u5f0f\uff1a\u76f4\u63a5\u4f20\u9012\u6570\u7ec4\uff1a\u4f20\u9012\u6570\u7ec4\u5f15\u7528\u3002\u4f20\u9012\u6570\u7ec4\u526f\u672c\uff1a\u4f7f\u7528 arrays.copyof() \u521b\u5efa\u526f\u672c\uff0c\u907f\u514d\u5f71\u54cd\u539f\u59cb\u6570\u7ec4\u3002\u4f20\u9012\u6570\u7ec4\u957f\u5ea6\uff1a\u53ea\u9700\u51fd\u6570\u77e5\u9053\u6570\u7ec4\u957f\u5ea6\u3002\u4f20\u9012\u591a\u7ef4\u6570\u7ec4\uff1a\u4f7f\u7528\u5d4c\u5957\u65b9\u62ec\u53f7\u6307\u5b9a\u7ef4\u6570\u3002\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202411\/12\/2024111214011712274.jpg\" class=\"aligncenter\" title=\"java\u6570\u7ec4\u600e\u4e48\u4f20\u63d2\u56fe\" alt=\"java\u6570\u7ec4\u600e\u4e48\u4f20\u63d2\u56fe\" \/><\/p>\n<p><strong>\u5982\u4f55\u5c06 Java \u6570\u7ec4\u4f5c\u4e3a\u53c2\u6570\u4f20\u9012<\/strong><\/p>\n<p>\u5728 Java \u4e2d\uff0c\u6570\u7ec4\u4f5c\u4e3a\u5f15\u7528\u7c7b\u578b\u4f20\u9012\u3002\u8fd9\u610f\u5473\u7740\uff0c\u5f53\u6570\u7ec4\u4f5c\u4e3a\u53c2\u6570\u4f20\u9012\u65f6\uff0c\u4f20\u9012\u7684\u4e0d\u662f\u6570\u7ec4\u672c\u8eab\uff0c\u800c\u662f\u6307\u5411\u6570\u7ec4\u7684\u5f15\u7528\u3002<\/p>\n<p><strong>\u76f4\u63a5\u4f20\u9012\u6570\u7ec4<\/strong><\/p>\n<p>\u6700\u7b80\u5355\u7684\u65b9\u6cd5\u662f\u76f4\u63a5\u5c06\u6570\u7ec4\u4f5c\u4e3a\u53c2\u6570\u4f20\u9012\uff1a<\/p>\n<p><span>\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n<pre>public void printArray(int[] arr) {\n    for (int i : arr) {\n        System.out.println(i);\n    }\n}<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u4f20\u9012\u6570\u7ec4\u526f\u672c<\/strong><\/p>\n<p>\u6709\u65f6\uff0c\u6211\u4eec\u9700\u8981\u4f20\u9012\u6570\u7ec4\u7684\u526f\u672c\uff0c\u4ee5\u4fbf\u51fd\u6570\u4fee\u6539\u6570\u7ec4\u540e\u4e0d\u4f1a\u5f71\u54cd\u539f\u59cb\u6570\u7ec4\u3002\u53ef\u4ee5\u4f7f\u7528 Arrays.copyOf() \u65b9\u6cd5\u6765\u521b\u5efa\u6570\u7ec4\u526f\u672c\uff1a<\/p>\n<pre>public void modifyArrayCopy(int[] arr) {\n    \/\/ \u521b\u5efa\u6570\u7ec4\u526f\u672c\n    arr = Arrays.copyOf(arr, arr.length);\n    arr[0] = 10; \/\/ \u4fee\u6539\u6570\u7ec4\u5143\u7d20\n}<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u4f20\u9012\u6570\u7ec4\u957f\u5ea6<\/strong><\/p>\n<p>\u6709\u65f6\uff0c\u51fd\u6570\u53ea\u9700\u8981\u77e5\u9053\u6570\u7ec4\u7684\u957f\u5ea6\uff0c\u800c\u4e0d\u5173\u5fc3\u6570\u7ec4\u7684\u5143\u7d20\u3002\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u53ef\u4ee5\u5c06\u6570\u7ec4\u7684\u957f\u5ea6\u4f5c\u4e3a\u53c2\u6570\u4f20\u9012\uff1a<\/p>\n<pre>public void printArrayLength(int[] arr) {\n    System.out.println(arr.length);\n}<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u4f20\u9012\u591a\u7ef4\u6570\u7ec4<\/strong><\/p>\n<p>\u591a\u7ef4\u6570\u7ec4\u4e5f\u53ef\u4ee5\u4f5c\u4e3a\u53c2\u6570\u4f20\u9012\u3002\u4f20\u9012\u65b9\u5f0f\u4e0e\u4e00\u7ef4\u6570\u7ec4\u7c7b\u4f3c\uff0c\u4f46\u9700\u8981\u4f7f\u7528\u5d4c\u5957\u7684\u65b9\u62ec\u53f7\u6765\u6307\u5b9a\u6570\u7ec4\u7684\u7ef4\u6570\uff1a<\/p>\n<pre>public void printMultidimensionalArray(int[][] arr) {\n    for (int[] row : arr) {\n        for (int value : row) {\n            System.out.println(value);\n        }\n    }\n}<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u4ee5\u4e0a\u5c31\u662fjava\u6570\u7ec4\u600e\u4e48\u4f20\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>java \u4e2d\u6570\u7ec4\u4f5c\u4e3a\u53c2\u6570\u4f20\u9012\u7684\u65b9\u5f0f\uff1a\u76f4\u63a5\u4f20\u9012\u6570\u7ec4\uff1a\u4f20\u9012\u6570\u7ec4\u5f15\u7528\u3002\u4f20\u9012\u6570\u7ec4\u526f\u672c\uff1a\u4f7f\u7528 arrays.copyof() \u521b\u5efa\u526f\u672c\uff0c\u907f\u514d\u5f71\u54cd\u539f\u59cb\u6570\u7ec4\u3002\u4f20\u9012\u6570\u7ec4\u957f\u5ea6\uff1a\u53ea\u9700\u51fd\u6570\u77e5\u9053\u6570\u7ec4\u957f\u5ea6\u3002\u4f20\u9012\u591a\u7ef4\u6570\u7ec4\uff1a\u4f7f\u7528\u5d4c\u5957\u65b9\u62ec\u53f7\u6307\u5b9a\u7ef4\u6570\u3002 \u5982\u4f55\u5c06 Java \u6570\u7ec4\u4f5c\u4e3a\u53c2\u6570\u4f20\u9012 \u5728 Java \u4e2d\uff0c\u6570\u7ec4\u4f5c\u4e3a\u5f15\u7528\u7c7b\u578b\u4f20\u9012\u3002\u8fd9\u610f\u5473\u7740\uff0c\u5f53\u6570\u7ec4\u4f5c\u4e3a\u53c2\u6570\u4f20\u9012\u65f6\uff0c\u4f20\u9012\u7684\u4e0d\u662f\u6570\u7ec4\u672c\u8eab\uff0c\u800c\u662f\u6307\u5411\u6570\u7ec4\u7684\u5f15\u7528\u3002 \u76f4\u63a5\u4f20\u9012\u6570\u7ec4 \u6700\u7b80\u5355\u7684\u65b9\u6cd5\u662f\u76f4\u63a5\u5c06\u6570\u7ec4\u4f5c\u4e3a\u53c2\u6570\u4f20\u9012\uff1a \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b public void printArray(int[] arr) { for (int i : arr) { System.out.println(i); } } \u767b\u5f55\u540e\u590d\u5236 \u4f20\u9012\u6570\u7ec4\u526f\u672c \u6709\u65f6\uff0c\u6211\u4eec\u9700\u8981\u4f20\u9012\u6570\u7ec4\u7684\u526f\u672c\uff0c\u4ee5\u4fbf\u51fd\u6570\u4fee\u6539\u6570\u7ec4\u540e\u4e0d\u4f1a\u5f71\u54cd\u539f\u59cb\u6570\u7ec4\u3002\u53ef\u4ee5\u4f7f\u7528 Arrays.copyOf() \u65b9\u6cd5\u6765\u521b\u5efa\u6570\u7ec4\u526f\u672c\uff1a public void modifyArrayCopy(int[] arr) { \/\/ \u521b\u5efa\u6570\u7ec4\u526f\u672c arr = Arrays.copyOf(arr, arr.length); arr[0] = 10; \/\/ \u4fee\u6539\u6570\u7ec4\u5143\u7d20 } \u767b\u5f55\u540e\u590d\u5236 \u4f20\u9012\u6570\u7ec4\u957f\u5ea6 \u6709\u65f6\uff0c\u51fd\u6570\u53ea\u9700\u8981\u77e5\u9053\u6570\u7ec4\u7684\u957f\u5ea6\uff0c\u800c\u4e0d\u5173\u5fc3\u6570\u7ec4\u7684\u5143\u7d20\u3002\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u53ef\u4ee5\u5c06\u6570\u7ec4\u7684\u957f\u5ea6\u4f5c\u4e3a\u53c2\u6570\u4f20\u9012\uff1a public void printArrayLength(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-65240","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/65240","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=65240"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/65240\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=65240"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=65240"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=65240"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}