{"id":67053,"date":"2025-05-03T16:13:37","date_gmt":"2025-05-03T08:13:37","guid":{"rendered":"https:\/\/fwq.ai\/blog\/67053\/"},"modified":"2025-05-03T16:13:37","modified_gmt":"2025-05-03T08:13:37","slug":"java%e4%b8%ad%e6%80%8e%e4%b9%88%e5%88%9b%e5%bb%ba%e4%b8%80%e4%b8%aa%e5%ad%97%e7%ac%a6%e4%b8%b2%e6%95%b0%e7%bb%84-2","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/67053\/","title":{"rendered":"java\u4e2d\u600e\u4e48\u521b\u5efa\u4e00\u4e2a\u5b57\u7b26\u4e32\u6570\u7ec4"},"content":{"rendered":"

\n java \u4e2d\u521b\u5efa\u5b57\u7b26\u4e32\u6570\u7ec4\u7684\u65b9\u6cd5\u5305\u62ec\uff1a\u58f0\u660e\u4e00\u4e2a\u7a7a\u6570\u7ec4\u3002\u521d\u59cb\u5316\u4e00\u4e2a\u6570\u7ec4\u5e76\u5206\u914d\u5143\u7d20\u3002\u4f7f\u7528 new \u5173\u952e\u5b57\u521b\u5efa\u6570\u7ec4\u5e76\u5206\u914d\u5143\u7d20\u3002\u4f7f\u7528 arrays.copyof() \u590d\u5236\u6570\u7ec4\u3002\n<\/p><\/blockquote>\n

\"java\u4e2d\u600e\u4e48\u521b\u5efa\u4e00\u4e2a\u5b57\u7b26\u4e32\u6570\u7ec4\u63d2\u56fe\"<\/p>\n

Java \u4e2d\u521b\u5efa<\/strong><\/p>\n

1. \u58f0\u660e\u6570\u7ec4<\/strong><\/p>\n

String[] names;<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u8fd9\u5c06\u58f0\u660e\u4e00\u4e2a\u540d\u4e3a names \u7684\u5b57\u7b26\u4e32\u6570\u7ec4\uff0c\u4f46\u6570\u7ec4\u4e2d\u6ca1\u6709\u5143\u7d20\u3002<\/p>\n
2. \u521b\u5efa\u5e76\u521d\u59cb\u5316\u6570\u7ec4<\/strong><\/p>\n
\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n
String[] colors = {\"red\", \"green\", \"blue\"};<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u8fd9\u5c06\u521b\u5efa\u4e00\u4e2a\u5b57\u7b26\u4e32\u6570\u7ec4 colors\uff0c\u5176\u4e2d\u5305\u542b\u4e09\u4e2a\u5143\u7d20\uff1a”red”\u3001”green” \u548c “blue”\u3002<\/p>\n
3. \u4f7f\u7528 new \u5173\u952e\u5b57<\/strong><\/p>\n
String[] animals = new String[3];\nanimals[0] = \"dog\";\nanimals[1] = \"cat\";\nanimals[2] = \"bird\";<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u8fd9\u5c06\u521b\u5efa\u957f\u5ea6\u4e3a 3 \u7684\u5b57\u7b26\u4e32\u6570\u7ec4 animals\uff0c\u5e76\u624b\u52a8\u5c06\u503c\u5206\u914d\u7ed9\u6570\u7ec4\u5143\u7d20\u3002<\/p>\n
4. \u4f7f\u7528 Arrays.copyOf() \u590d\u5236\u6570\u7ec4<\/strong><\/p>\n
String[] animalsCopy = Arrays.copyOf(animals, animals.length);<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u8fd9\u5c06\u521b\u5efa\u4e00\u4e2a\u65b0\u6570\u7ec4 animalsCopy\uff0c\u5b83\u662f\u539f\u59cb animals \u6570\u7ec4\u7684\u526f\u672c\u3002<\/p>\n
\u6570\u7ec4\u904d\u5386\uff1a<\/strong><\/p>\n
\u4e00\u65e6\u521b\u5efa\u4e86\u5b57\u7b26\u4e32\u6570\u7ec4\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u65b9\u6cd5\u904d\u5386\u548c\u8bbf\u95ee\u5176\u5143\u7d20\uff1a<\/p>\n
    \n
  • for \u5faa\u73af\uff1a<\/strong><\/li>\n<\/ul>\n
    for (String name : names) {\n    \/\/ \u4f7f\u7528 name\n}<\/pre>\n
     \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
      \n
    • forEach()\uff1a<\/strong><\/li>\n<\/ul>\n
      Arrays.stream(colors).forEach(color -> {\n    \/\/ \u4f7f\u7528 color\n});<\/pre>\n
       \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
      \u4ee5\u4e0a\u5c31\u662fjava\u4e2d\u600e\u4e48\u521b\u5efa\u4e00\u4e2a\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\u521b\u5efa\u5b57\u7b26\u4e32\u6570\u7ec4\u7684\u65b9\u6cd5\u5305\u62ec\uff1a\u58f0\u660e\u4e00\u4e2a\u7a7a\u6570\u7ec4\u3002\u521d\u59cb\u5316\u4e00\u4e2a\u6570\u7ec4\u5e76\u5206\u914d\u5143\u7d20\u3002\u4f7f\u7528 new \u5173\u952e\u5b57\u521b\u5efa\u6570\u7ec4\u5e76\u5206\u914d\u5143\u7d20\u3002\u4f7f\u7528 arrays.copyof() \u590d\u5236\u6570\u7ec4\u3002 Java \u4e2d\u521b\u5efa 1. \u58f0\u660e\u6570\u7ec4 String[] names; \u767b\u5f55\u540e\u590d\u5236 \u8fd9\u5c06\u58f0\u660e\u4e00\u4e2a\u540d\u4e3a names \u7684\u5b57\u7b26\u4e32\u6570\u7ec4\uff0c\u4f46\u6570\u7ec4\u4e2d\u6ca1\u6709\u5143\u7d20\u3002 2. \u521b\u5efa\u5e76\u521d\u59cb\u5316\u6570\u7ec4 \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b String[] colors = {“red”, “green”, “blue”}; \u767b\u5f55\u540e\u590d\u5236 \u8fd9\u5c06\u521b\u5efa\u4e00\u4e2a\u5b57\u7b26\u4e32\u6570\u7ec4 colors\uff0c\u5176\u4e2d\u5305\u542b\u4e09\u4e2a\u5143\u7d20\uff1a”red”\u3001”green” \u548c “blue”\u3002 3. \u4f7f\u7528 new \u5173\u952e\u5b57 String[] animals = new String[3]; animals[0] = “dog”; animals[1] = “cat”; animals[2] = “bird”; \u767b\u5f55\u540e\u590d\u5236 \u8fd9\u5c06\u521b\u5efa\u957f\u5ea6\u4e3a 3 \u7684\u5b57\u7b26\u4e32\u6570\u7ec4 animals\uff0c\u5e76\u624b\u52a8\u5c06\u503c\u5206\u914d\u7ed9\u6570\u7ec4\u5143\u7d20\u3002 4. \u4f7f\u7528 […]<\/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-67053","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/67053","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=67053"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/67053\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=67053"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=67053"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=67053"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}