{"id":66451,"date":"2025-05-03T10:47:32","date_gmt":"2025-05-03T02:47:32","guid":{"rendered":"https:\/\/fwq.ai\/blog\/66451\/"},"modified":"2025-05-03T10:47:32","modified_gmt":"2025-05-03T02:47:32","slug":"java%e6%80%8e%e4%b9%88%e6%8a%8a%e5%ad%97%e7%ac%a6%e4%b8%b2%e5%8a%a0%e5%85%a5%e6%95%b0%e7%bb%84-2","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/66451\/","title":{"rendered":"java\u600e\u4e48\u628a\u5b57\u7b26\u4e32\u52a0\u5165\u6570\u7ec4"},"content":{"rendered":"

\n java \u4e2d\u5c06\u5b57\u7b26\u4e32\u6dfb\u52a0\u5230\u6570\u7ec4\u7684\u65b9\u6cd5\u6709\u56db\u79cd\uff1a\u6570\u7ec4\u521d\u59cb\u5316\uff1a\u5728\u58f0\u660e\u6570\u7ec4\u65f6\u521d\u59cb\u5316arrays.copyof()\uff1a\u6269\u5c55\u73b0\u6709\u6570\u7ec4\u5e76\u6dfb\u52a0\u5b57\u7b26\u4e32system.arraycopy()\uff1a\u590d\u5236\u6570\u7ec4\u90e8\u5206\u5185\u5bb9\u5230\u53e6\u4e00\u4e2a\u6570\u7ec4arraylist\uff1a\u52a8\u6001\u6570\u7ec4\uff0c\u53ef\u81ea\u52a8\u589e\u957f\u5e76\u6dfb\u52a0\u5b57\u7b26\u4e32\n<\/p><\/blockquote>\n

\"java\u600e\u4e48\u628a\u5b57\u7b26\u4e32\u52a0\u5165\u6570\u7ec4\u63d2\u56fe\"<\/p>\n

\u5982\u4f55\u5728 Java \u4e2d\u5c06\u5b57\u7b26\u4e32\u6dfb\u52a0\u5230\u6570\u7ec4<\/strong><\/p>\n

\u65b9\u6cd5 1\uff1a\u6570\u7ec4\u521d\u59cb\u5316<\/strong><\/p>\n

\u6700\u7b80\u5355\u7684\u6dfb\u52a0\u5b57\u7b26\u4e32\u5230\u6570\u7ec4\u7684\u65b9\u6cd5\u662f\u5728\u6570\u7ec4\u58f0\u660e\u65f6\u8fdb\u884c\u521d\u59cb\u5316\uff1a<\/p>\n

String[] fruits = {\"\u82f9\u679c\", \"\u9999\u8549\", \"\u6a58\u5b50\"};<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u65b9\u6cd5 2\uff1a\u4f7f\u7528 Arrays.copyOf() \u65b9\u6cd5<\/strong><\/p>\n
\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n
Arrays.copyOf() \u65b9\u6cd5\u53ef\u4ee5\u5c06\u73b0\u6709\u6570\u7ec4\u6269\u5c55\u4e3a\u65b0\u6570\u7ec4\uff0c\u65b0\u6570\u7ec4\u5305\u542b\u539f\u6570\u7ec4\u7684\u6240\u6709\u5143\u7d20\u4ee5\u53ca\u65b0\u6dfb\u52a0\u7684\u5b57\u7b26\u4e32\uff1a<\/p>\n
String[] fruits = {\"\u82f9\u679c\", \"\u9999\u8549\"};\nfruits = Arrays.copyOf(fruits, fruits.length + 1);\nfruits[fruits.length - 1] = \"\u6a58\u5b50\";<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u65b9\u6cd5 3\uff1a\u4f7f\u7528 System.arraycopy() \u65b9\u6cd5<\/strong><\/p>\n
System.arraycopy() \u65b9\u6cd5\u53ef\u4ee5\u5c06\u6307\u5b9a\u6570\u7ec4\u7684\u90e8\u5206\u5185\u5bb9\u590d\u5236\u5230\u53e6\u4e00\u4e2a\u6570\u7ec4\u4e2d\uff1a<\/p>\n
String[] fruits = new String[3];\nSystem.arraycopy(new String[]{\"\u82f9\u679c\", \"\u9999\u8549\"}, 0, fruits, 0, 2);\nfruits[2] = \"\u6a58\u5b50\";<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u65b9\u6cd5 4\uff1a\u4f7f\u7528 ArrayList<\/strong><\/p>\n
ArrayList \u662f\u4e00\u4e2a\u52a8\u6001\u6570\u7ec4\uff0c\u53ef\u4ee5\u81ea\u52a8\u589e\u957f\u3002\u8981\u5c06\u5b57\u7b26\u4e32\u6dfb\u52a0\u5230 ArrayList \u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528 add() \u65b9\u6cd5\uff1a<\/p>\n
ArrayList<String> fruits = new ArrayList<>();\nfruits.add(\"\u82f9\u679c\");\nfruits.add(\"\u9999\u8549\");\nfruits.add(\"\u6a58\u5b50\");<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u9009\u62e9\u6700\u4f73\u65b9\u6cd5<\/strong><\/p>\n
\u6839\u636e\u5177\u4f53\u60c5\u51b5\u9009\u62e9\u6700\u5408\u9002\u7684\u6dfb\u52a0\u5b57\u7b26\u4e32\u5230\u6570\u7ec4\u7684\u65b9\u6cd5\uff1a<\/p>\n
    \n
  •  \u6570\u7ec4\u521d\u59cb\u5316\uff1a<\/strong>\u9002\u7528\u4e8e\u4e00\u6b21\u6027\u6dfb\u52a0\u6240\u6709\u5b57\u7b26\u4e32\u7684\u60c5\u51b5\u3002<\/li>\n
  •  Arrays.copyOf()\uff1a<\/strong>\u9002\u7528\u4e8e\u9700\u8981\u6269\u5c55\u73b0\u6709\u6570\u7ec4\u7684\u60c5\u51b5\u3002<\/li>\n
  •  System.arraycopy()\uff1a<\/strong>\u9002\u7528\u4e8e\u9700\u8981\u5c06\u4e00\u4e2a\u6570\u7ec4\u90e8\u5206\u5185\u5bb9\u590d\u5236\u5230\u53e6\u4e00\u4e2a\u6570\u7ec4\u7684\u60c5\u51b5\u3002<\/li>\n
  •  ArrayList\uff1a<\/strong>\u9002\u7528\u4e8e\u9700\u8981\u52a8\u6001\u6dfb\u52a0\u548c\u5220\u9664\u5b57\u7b26\u4e32\u7684\u60c5\u51b5\u3002<\/li>\n<\/ul>\n
    \u4ee5\u4e0a\u5c31\u662fjava\u600e\u4e48\u628a\u5b57\u7b26\u4e32\u52a0\u5165\u6570\u7ec4\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8IDCBABY\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"
    java \u4e2d\u5c06\u5b57\u7b26\u4e32\u6dfb\u52a0\u5230\u6570\u7ec4\u7684\u65b9\u6cd5\u6709\u56db\u79cd\uff1a\u6570\u7ec4\u521d\u59cb\u5316\uff1a\u5728\u58f0\u660e\u6570\u7ec4\u65f6\u521d\u59cb\u5316arrays.copyof()\uff1a\u6269\u5c55\u73b0\u6709\u6570\u7ec4\u5e76\u6dfb\u52a0\u5b57\u7b26\u4e32system.arraycopy()\uff1a\u590d\u5236\u6570\u7ec4\u90e8\u5206\u5185\u5bb9\u5230\u53e6\u4e00\u4e2a\u6570\u7ec4arraylist\uff1a\u52a8\u6001\u6570\u7ec4\uff0c\u53ef\u81ea\u52a8\u589e\u957f\u5e76\u6dfb\u52a0\u5b57\u7b26\u4e32 \u5982\u4f55\u5728 Java \u4e2d\u5c06\u5b57\u7b26\u4e32\u6dfb\u52a0\u5230\u6570\u7ec4 \u65b9\u6cd5 1\uff1a\u6570\u7ec4\u521d\u59cb\u5316 \u6700\u7b80\u5355\u7684\u6dfb\u52a0\u5b57\u7b26\u4e32\u5230\u6570\u7ec4\u7684\u65b9\u6cd5\u662f\u5728\u6570\u7ec4\u58f0\u660e\u65f6\u8fdb\u884c\u521d\u59cb\u5316\uff1a String[] fruits = {“\u82f9\u679c”, “\u9999\u8549”, “\u6a58\u5b50”}; \u767b\u5f55\u540e\u590d\u5236 \u65b9\u6cd5 2\uff1a\u4f7f\u7528 Arrays.copyOf() \u65b9\u6cd5 \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b Arrays.copyOf() \u65b9\u6cd5\u53ef\u4ee5\u5c06\u73b0\u6709\u6570\u7ec4\u6269\u5c55\u4e3a\u65b0\u6570\u7ec4\uff0c\u65b0\u6570\u7ec4\u5305\u542b\u539f\u6570\u7ec4\u7684\u6240\u6709\u5143\u7d20\u4ee5\u53ca\u65b0\u6dfb\u52a0\u7684\u5b57\u7b26\u4e32\uff1a String[] fruits = {“\u82f9\u679c”, “\u9999\u8549”}; fruits = Arrays.copyOf(fruits, fruits.length + 1); fruits[fruits.length – 1] = “\u6a58\u5b50”; \u767b\u5f55\u540e\u590d\u5236 \u65b9\u6cd5 3\uff1a\u4f7f\u7528 System.arraycopy() \u65b9\u6cd5 System.arraycopy() \u65b9\u6cd5\u53ef\u4ee5\u5c06\u6307\u5b9a\u6570\u7ec4\u7684\u90e8\u5206\u5185\u5bb9\u590d\u5236\u5230\u53e6\u4e00\u4e2a\u6570\u7ec4\u4e2d\uff1a String[] fruits = new String[3]; System.arraycopy(new String[]{“\u82f9\u679c”, “\u9999\u8549”}, 0, fruits, […]<\/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-66451","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/66451","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=66451"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/66451\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=66451"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=66451"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=66451"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}