{"id":64590,"date":"2025-05-03T11:30:41","date_gmt":"2025-05-03T03:30:41","guid":{"rendered":"https:\/\/fwq.ai\/blog\/64590\/"},"modified":"2025-05-03T11:30:41","modified_gmt":"2025-05-03T03:30:41","slug":"java%e5%ad%97%e7%ac%a6%e4%b8%b2%e6%95%b0%e7%bb%84%e6%80%8e%e4%b9%88%e6%b7%bb%e5%8a%a0%e4%b8%8b%e6%a0%87-2","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/64590\/","title":{"rendered":"java\u5b57\u7b26\u4e32\u6570\u7ec4\u600e\u4e48\u6dfb\u52a0\u4e0b\u6807"},"content":{"rendered":"<blockquote><p>\n  \u901a\u8fc7 array.copyof() \u65b9\u6cd5\u589e\u52a0\u6570\u7ec4\u957f\u5ea6\u5e76\u4f7f\u7528\u4e0b\u6807\u8d4b\u503c\uff0c\u53ef\u4ee5\u5411 java \u5b57\u7b26\u4e32\u6570\u7ec4\u4e2d\u6dfb\u52a0\u5143\u7d20\u3002\u8be6\u7ec6\u6b65\u9aa4\uff1a\u4f7f\u7528 array.copyof() \u521b\u5efa\u4e00\u4e2a\u65b0\u6570\u7ec4\uff0c\u5176\u5927\u5c0f\u4e3a\u539f\u59cb\u6570\u7ec4\u52a0\u4e0a 1\u3002\u5c06\u65b0\u5143\u7d20\u8d4b\u503c\u7ed9\u65b0\u6570\u7ec4\u7684\u6700\u540e\u4e00\u4e2a\u5143\u7d20\uff0c\u4e0b\u6807\u4e3a\uff08\u539f\u59cb\u6570\u7ec4\u957f\u5ea6 &#8211; 1\uff09\u3002\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202411\/04\/2024110402364589415.jpg\" class=\"aligncenter\" title=\"java\u5b57\u7b26\u4e32\u6570\u7ec4\u600e\u4e48\u6dfb\u52a0\u4e0b\u6807\u63d2\u56fe\" alt=\"java\u5b57\u7b26\u4e32\u6570\u7ec4\u600e\u4e48\u6dfb\u52a0\u4e0b\u6807\u63d2\u56fe\" \/><\/p>\n<p><strong>\u5982\u4f55\u5411 Java \u4e2d\u6dfb\u52a0\u4e0b\u6807<\/strong><\/p>\n<p>\u901a\u8fc7\u4e0b\u6807\u5411 Java \u5b57\u7b26\u4e32\u6570\u7ec4\u4e2d\u6dfb\u52a0\u5143\u7d20\u9700\u8981\u4f7f\u7528\u6570\u7ec4\u7684\u5185\u7f6e\u65b9\u6cd5\u3002<\/p>\n<p><strong>\u65b9\u6cd5\uff1a<\/strong><\/p>\n<p>\u4f7f\u7528 append() \u65b9\u6cd5\uff0c\u8be5\u65b9\u6cd5\u5c06\u4e00\u4e2a\u5b57\u7b26\u4e32\u9644\u52a0\u5230\u6570\u7ec4\u7684\u672b\u5c3e\uff0c\u540c\u65f6\u8fd4\u56de\u4fee\u6539\u540e\u7684\u6570\u7ec4\uff1a<\/p>\n<p><span>\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n<pre>String[] myArray = {\"Hello\", \"World\"};\nmyArray = Arrays.copyOf(myArray, myArray.length + 1);\nmyArray[myArray.length - 1] = \"New Value\";<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u4e0a\u8ff0\u4ee3\u7801\u4f1a\u5c06 &#8220;New Value&#8221; \u6dfb\u52a0\u5230 myArray \u6570\u7ec4\u7684\u672b\u5c3e\uff0c\u5e76\u5c06\u7ed3\u679c\u5b58\u50a8\u5728 myArray \u4e2d\u3002<\/p>\n<p><strong>\u6ce8\u610f\uff1a<\/strong><\/p>\n<ul>\n<li>\u786e\u4fdd\u5148\u5c06\u6570\u7ec4\u7684\u5927\u5c0f\u589e\u52a0 1\uff0c\u7136\u540e\u518d\u8bbe\u7f6e\u65b0\u7684\u5143\u7d20\uff0c\u4ee5\u907f\u514d\u6570\u7ec4\u8d8a\u754c\u5f02\u5e38\u3002<\/li>\n<li>\u6216\u8005\uff0c\u53ef\u4ee5\u4f7f\u7528 ArrayList \u6765\u5b58\u50a8\u5b57\u7b26\u4e32\uff0c\u5b83\u53ef\u4ee5\u81ea\u52a8\u8c03\u6574\u5927\u5c0f\uff0c\u4ece\u800c\u4e0d\u9700\u8981\u5904\u7406\u6570\u7ec4\u5927\u5c0f\u3002 <\/li>\n<\/ul>\n<p>\u4ee5\u4e0a\u5c31\u662fjava\u600e\u4e48\u6dfb\u52a0\u4e0b\u6807\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>\u901a\u8fc7 array.copyof() \u65b9\u6cd5\u589e\u52a0\u6570\u7ec4\u957f\u5ea6\u5e76\u4f7f\u7528\u4e0b\u6807\u8d4b\u503c\uff0c\u53ef\u4ee5\u5411 java \u5b57\u7b26\u4e32\u6570\u7ec4\u4e2d\u6dfb\u52a0\u5143\u7d20\u3002\u8be6\u7ec6\u6b65\u9aa4\uff1a\u4f7f\u7528 array.copyof() \u521b\u5efa\u4e00\u4e2a\u65b0\u6570\u7ec4\uff0c\u5176\u5927\u5c0f\u4e3a\u539f\u59cb\u6570\u7ec4\u52a0\u4e0a 1\u3002\u5c06\u65b0\u5143\u7d20\u8d4b\u503c\u7ed9\u65b0\u6570\u7ec4\u7684\u6700\u540e\u4e00\u4e2a\u5143\u7d20\uff0c\u4e0b\u6807\u4e3a\uff08\u539f\u59cb\u6570\u7ec4\u957f\u5ea6 &#8211; 1\uff09\u3002 \u5982\u4f55\u5411 Java \u4e2d\u6dfb\u52a0\u4e0b\u6807 \u901a\u8fc7\u4e0b\u6807\u5411 Java \u5b57\u7b26\u4e32\u6570\u7ec4\u4e2d\u6dfb\u52a0\u5143\u7d20\u9700\u8981\u4f7f\u7528\u6570\u7ec4\u7684\u5185\u7f6e\u65b9\u6cd5\u3002 \u65b9\u6cd5\uff1a \u4f7f\u7528 append() \u65b9\u6cd5\uff0c\u8be5\u65b9\u6cd5\u5c06\u4e00\u4e2a\u5b57\u7b26\u4e32\u9644\u52a0\u5230\u6570\u7ec4\u7684\u672b\u5c3e\uff0c\u540c\u65f6\u8fd4\u56de\u4fee\u6539\u540e\u7684\u6570\u7ec4\uff1a \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b String[] myArray = {&#8220;Hello&#8221;, &#8220;World&#8221;}; myArray = Arrays.copyOf(myArray, myArray.length + 1); myArray[myArray.length &#8211; 1] = &#8220;New Value&#8221;; \u767b\u5f55\u540e\u590d\u5236 \u4e0a\u8ff0\u4ee3\u7801\u4f1a\u5c06 &#8220;New Value&#8221; \u6dfb\u52a0\u5230 myArray \u6570\u7ec4\u7684\u672b\u5c3e\uff0c\u5e76\u5c06\u7ed3\u679c\u5b58\u50a8\u5728 myArray \u4e2d\u3002 \u6ce8\u610f\uff1a \u786e\u4fdd\u5148\u5c06\u6570\u7ec4\u7684\u5927\u5c0f\u589e\u52a0 1\uff0c\u7136\u540e\u518d\u8bbe\u7f6e\u65b0\u7684\u5143\u7d20\uff0c\u4ee5\u907f\u514d\u6570\u7ec4\u8d8a\u754c\u5f02\u5e38\u3002 \u6216\u8005\uff0c\u53ef\u4ee5\u4f7f\u7528 ArrayList \u6765\u5b58\u50a8\u5b57\u7b26\u4e32\uff0c\u5b83\u53ef\u4ee5\u81ea\u52a8\u8c03\u6574\u5927\u5c0f\uff0c\u4ece\u800c\u4e0d\u9700\u8981\u5904\u7406\u6570\u7ec4\u5927\u5c0f\u3002 \u4ee5\u4e0a\u5c31\u662fjava\u600e\u4e48\u6dfb\u52a0\u4e0b\u6807\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8IDCBABY\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/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-64590","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/64590","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=64590"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/64590\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=64590"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=64590"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=64590"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}