{"id":35380,"date":"2024-11-26T17:19:41","date_gmt":"2024-11-26T09:19:41","guid":{"rendered":"https:\/\/fwq.ai\/blog\/35380\/"},"modified":"2024-11-26T17:19:41","modified_gmt":"2024-11-26T09:19:41","slug":"java%e6%80%8e%e4%b9%88%e6%88%aa%e5%8f%96%e6%95%b0%e7%bb%84%e4%b8%ad%e7%9a%84%e5%ad%97%e7%ac%a6%e4%b8%b2","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/35380\/","title":{"rendered":"java\u600e\u4e48\u622a\u53d6\u6570\u7ec4\u4e2d\u7684\u5b57\u7b26\u4e32"},"content":{"rendered":"

\n \u5728 java \u4e2d\uff0c\u4f7f\u7528 substring() \u65b9\u6cd5\u622a\u53d6\u6570\u7ec4\u4e2d\u7684\u5b57\u7b26\u4e32\u3002\u8be5\u65b9\u6cd5\u63a5\u53d7\u4e24\u4e2a\u53c2\u6570\uff1a\u5f00\u59cb\u7d22\u5f15\u548c\u7ed3\u675f\u7d22\u5f15\uff0c\u8fd4\u56de\u4ece\u5f00\u59cb\u7d22\u5f15\uff08\u5305\u62ec\uff09\u5230\u7ed3\u675f\u7d22\u5f15\uff08\u4e0d\u5305\u62ec\uff09\u7684\u5b50\u5b57\u7b26\u4e32\u3002\n<\/p><\/blockquote>\n

\"java\u600e\u4e48\u622a\u53d6\u6570\u7ec4\u4e2d\u7684\u5b57\u7b26\u4e32\u63d2\u56fe\"<\/p>\n

Java \u4e2d\u5982\u4f55\u622a\u53d6\u6570\u7ec4\u4e2d\u7684\u5b57\u7b26\u4e32<\/strong><\/p>\n

\u5728 Java \u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528 substring() \u65b9\u6cd5\u4ece\u6570\u7ec4\u4e2d\u622a\u53d6\u5b57\u7b26\u4e32\u3002\u8be5\u65b9\u6cd5\u63a5\u53d7\u4e24\u4e2a\u53c2\u6570\uff1a\u5f00\u59cb\u7d22\u5f15\u548c\u7ed3\u675f\u7d22\u5f15\u3002<\/p>\n

\u8bed\u6cd5\uff1a<\/strong><\/p>\n

public String substring(int beginIndex, int endIndex)<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u53c2\u6570\uff1a<\/strong><\/p>\n
\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n
    \n
  •  beginIndex:<\/strong> \u8981\u622a\u53d6\u7684\u5b57\u7b26\u4e32\u7684\u8d77\u59cb\u7d22\u5f15\uff08\u5305\u62ec\u5728\u5185\uff09\u3002<\/li>\n
  •  endIndex:<\/strong> \u8981\u622a\u53d6\u7684\u5b57\u7b26\u4e32\u7684\u7ed3\u675f\u7d22\u5f15\uff08\u4e0d\u5305\u62ec\u5728\u5185\uff09\u3002<\/li>\n<\/ul>\n
    \u793a\u4f8b\uff1a<\/strong><\/p>\n
    String[] words = {\"Hello\", \"World\", \"Java\"};\n\n\/\/ \u622a\u53d6 \"Hello\"\nString hello = words[0].substring(0, 5);\n\n\/\/ \u622a\u53d6 \"Java\"\nString java = words[2].substring(0, 4);<\/pre>\n
     \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
    \u6ce8\u610f\uff1a<\/strong><\/p>\n
      \n
    • \u5f00\u59cb\u7d22\u5f15\u5fc5\u987b\u5927\u4e8e\u6216\u7b49\u4e8e 0\uff0c\u5c0f\u4e8e\u6570\u7ec4\u7684\u957f\u5ea6\u3002<\/li>\n
    • \u7ed3\u675f\u7d22\u5f15\u5fc5\u987b\u5927\u4e8e\u6216\u7b49\u4e8e\u5f00\u59cb\u7d22\u5f15\uff0c\u5c0f\u4e8e\u6216\u7b49\u4e8e\u6570\u7ec4\u7684\u957f\u5ea6\u3002<\/li>\n
    • \u5982\u679c\u63d0\u4f9b\u7684\u7d22\u5f15\u8d85\u51fa\u6570\u7ec4\u8303\u56f4\uff0c\u5c06\u4f1a\u629b\u51fa IndexOutOfBoundsException \u5f02\u5e38\u3002<\/li>\n<\/ul>\n
      \u5176\u4ed6\u65b9\u6cd5\uff1a<\/strong><\/p>\n
      \u9664\u4e86 substring() \u65b9\u6cd5\u5916\uff0c\u8fd8\u6709\u4e00\u4e9b\u5176\u4ed6\u65b9\u6cd5\u53ef\u4ee5\u7528\u4e8e\u4ece\u6570\u7ec4\u4e2d\u622a\u53d6\u5b57\u7b26\u4e32\uff1a<\/p>\n
        \n
      •  Arrays.copyOfRange()\uff1a<\/strong>\u5c06\u6570\u7ec4\u7684\u4e00\u90e8\u5206\u590d\u5236\u5230\u4e00\u4e2a\u65b0\u6570\u7ec4\u4e2d\u3002<\/li>\n
      •  list.subList()\uff1a<\/strong>\u5c06\u6570\u7ec4\u7684\u4e00\u90e8\u5206\u8f6c\u6362\u4e3a\u4e00\u4e2a\u65b0\u7684\u5217\u8868\uff0c\u7136\u540e\u5c06\u5176\u8f6c\u6362\u4e3a\u5b57\u7b26\u4e32\u3002<\/li>\n
      •  Stream.skip() \u548c Stream.limit()\uff1a<\/strong>\u4f7f\u7528 Java 8 \u6d41 API \u8df3\u8fc7\u548c\u9650\u5236\u5143\u7d20\u3002<\/li>\n<\/ul>\n
        \u4ee5\u4e0a\u5c31\u662fjava\u600e\u4e48\u622a\u53d6\u6570\u7ec4\u4e2d\u7684\u5b57\u7b26\u4e32\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8\u7c73\u4e91\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"
        \u5728 java \u4e2d\uff0c\u4f7f\u7528 substring() \u65b9\u6cd5\u622a\u53d6\u6570\u7ec4\u4e2d\u7684\u5b57\u7b26\u4e32\u3002\u8be5\u65b9\u6cd5\u63a5\u53d7\u4e24\u4e2a\u53c2\u6570\uff1a\u5f00\u59cb\u7d22\u5f15\u548c\u7ed3\u675f\u7d22\u5f15\uff0c\u8fd4\u56de\u4ece\u5f00\u59cb\u7d22\u5f15\uff08\u5305\u62ec\uff09\u5230\u7ed3\u675f\u7d22\u5f15\uff08\u4e0d\u5305\u62ec\uff09\u7684\u5b50\u5b57\u7b26\u4e32\u3002 Java \u4e2d\u5982\u4f55\u622a\u53d6\u6570\u7ec4\u4e2d\u7684\u5b57\u7b26\u4e32 \u5728 Java \u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528 substring() \u65b9\u6cd5\u4ece\u6570\u7ec4\u4e2d\u622a\u53d6\u5b57\u7b26\u4e32\u3002\u8be5\u65b9\u6cd5\u63a5\u53d7\u4e24\u4e2a\u53c2\u6570\uff1a\u5f00\u59cb\u7d22\u5f15\u548c\u7ed3\u675f\u7d22\u5f15\u3002 \u8bed\u6cd5\uff1a public String substring(int beginIndex, int endIndex) \u767b\u5f55\u540e\u590d\u5236 \u53c2\u6570\uff1a \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b beginIndex: \u8981\u622a\u53d6\u7684\u5b57\u7b26\u4e32\u7684\u8d77\u59cb\u7d22\u5f15\uff08\u5305\u62ec\u5728\u5185\uff09\u3002 endIndex: \u8981\u622a\u53d6\u7684\u5b57\u7b26\u4e32\u7684\u7ed3\u675f\u7d22\u5f15\uff08\u4e0d\u5305\u62ec\u5728\u5185\uff09\u3002 \u793a\u4f8b\uff1a String[] words = {“Hello”, “World”, “Java”}; \/\/ \u622a\u53d6 “Hello” String hello = words[0].substring(0, 5); \/\/ \u622a\u53d6 “Java” String java = words[2].substring(0, 4); \u767b\u5f55\u540e\u590d\u5236 \u6ce8\u610f\uff1a \u5f00\u59cb\u7d22\u5f15\u5fc5\u987b\u5927\u4e8e\u6216\u7b49\u4e8e 0\uff0c\u5c0f\u4e8e\u6570\u7ec4\u7684\u957f\u5ea6\u3002 \u7ed3\u675f\u7d22\u5f15\u5fc5\u987b\u5927\u4e8e\u6216\u7b49\u4e8e\u5f00\u59cb\u7d22\u5f15\uff0c\u5c0f\u4e8e\u6216\u7b49\u4e8e\u6570\u7ec4\u7684\u957f\u5ea6\u3002 \u5982\u679c\u63d0\u4f9b\u7684\u7d22\u5f15\u8d85\u51fa\u6570\u7ec4\u8303\u56f4\uff0c\u5c06\u4f1a\u629b\u51fa […]<\/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-35380","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/35380","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=35380"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/35380\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=35380"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=35380"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=35380"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}