{"id":37949,"date":"2024-11-26T09:22:30","date_gmt":"2024-11-26T01:22:30","guid":{"rendered":"https:\/\/fwq.ai\/blog\/37949\/"},"modified":"2024-11-26T09:22:30","modified_gmt":"2024-11-26T01:22:30","slug":"java%e6%80%8e%e4%b9%88%e5%90%91%e6%95%b0%e7%bb%84%e6%b7%bb%e5%8a%a0%e6%95%b0%e6%8d%ae","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/37949\/","title":{"rendered":"java\u600e\u4e48\u5411\u6570\u7ec4\u6dfb\u52a0\u6570\u636e"},"content":{"rendered":"

\n \u5411 java \u6570\u7ec4\u6dfb\u52a0\u6570\u636e\u6709\u56db\u79cd\u65b9\u6cd5\uff1a\u4f7f\u7528\u6570\u7ec4\u7d22\u5f15\u76f4\u63a5\u8d4b\u503c\uff1b\u4f7f\u7528 arrays \u7c7b\u7684\u65b9\u6cd5\uff08arrays.fill() \u548c arrays.copyof()\uff09\uff1b\u4f7f\u7528\u96c6\u5408\u6846\u67b6\uff08list \u548c arraylist\uff09\uff1b\u4f7f\u7528\u6d41 api\uff08arrays.stream()\uff09\u3002\n<\/p><\/blockquote>\n

\"java\u600e\u4e48\u5411\u6570\u7ec4\u6dfb\u52a0\u6570\u636e\u63d2\u56fe\"<\/p>\n

\u5982\u4f55\u5411 Java \u6570\u7ec4\u6dfb\u52a0\u6570\u636e<\/strong><\/p>\n

Java \u6570\u7ec4\u662f\u4e00\u79cd\u56fa\u5b9a\u5927\u5c0f\u7684\u8fde\u7eed\u5185\u5b58\u5757\uff0c\u7528\u4e8e\u5b58\u50a8\u76f8\u540c\u7c7b\u578b\u7684\u6570\u636e\u5143\u7d20\u3002\u8981\u5411 Java \u6570\u7ec4\u6dfb\u52a0\u6570\u636e\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u65b9\u6cd5\uff1a<\/p>\n

1. \u4f7f\u7528\u6570\u7ec4\u7d22\u5f15<\/strong><\/p>\n

\u76f4\u63a5\u4f7f\u7528\u6570\u7ec4\u7d22\u5f15\u53ef\u4ee5\u5411\u6570\u7ec4\u4e2d\u6dfb\u52a0\u5143\u7d20\uff1a<\/p>\n

\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n

int[] numbers = new int[5];\nnumbers[0] = 10;\nnumbers[1] = 20;<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
2. \u4f7f\u7528\u6570\u7ec4\u7c7b<\/strong><\/p>\n
Arrays \u7c7b\u63d0\u4f9b\u4e86\u8bb8\u591a\u64cd\u4f5c\u6570\u7ec4\u7684\u5b9e\u7528\u65b9\u6cd5\uff0c\u5305\u62ec Arrays.fill() \u548c Arrays.copyOf()\uff1a<\/p>\n
    \n
  •  Arrays.fill()\uff1a<\/strong>\u4f7f\u7528\u6307\u5b9a\u503c\u586b\u5145\u6570\u7ec4\u7684\u6240\u6709\u5143\u7d20\uff1a<\/li>\n<\/ul>\n
    Arrays.fill(numbers, 100);<\/pre>\n
     \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
      \n
    •  Arrays.copyOf()\uff1a<\/strong>\u521b\u5efa\u4e00\u4e2a\u65b0\u6570\u7ec4\uff0c\u662f\u539f\u59cb\u6570\u7ec4\u7684\u526f\u672c\uff0c\u5e76\u53ef\u6307\u5b9a\u65b0\u7684\u957f\u5ea6\uff1a<\/li>\n<\/ul>\n
      int[] newArray = Arrays.copyOf(numbers, 10);\nnewArray[5] = 30;<\/pre>\n
       \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
      3. \u4f7f\u7528\u96c6\u5408\u6846\u67b6<\/strong><\/p>\n
      Java \u96c6\u5408\u6846\u67b6\u63d0\u4f9b\u4e86\u4e00\u7ec4\u63a5\u53e3\u548c\u7c7b\u7528\u4e8e\u64cd\u4f5c\u96c6\u5408\uff0c\u5305\u62ec List \u548c ArrayList\uff1a<\/p>\n
        \n
      •  List\uff1a<\/strong>\u4e00\u4e2a\u6709\u5e8f\u7684\u96c6\u5408\uff0c\u53ef\u4ee5\u52a8\u6001\u5730\u6dfb\u52a0\u548c\u5220\u9664\u5143\u7d20\u3002<\/li>\n
      •  ArrayList\uff1a<\/strong>List \u63a5\u53e3\u7684\u4e00\u4e2a\u5b9e\u73b0\uff0c\u5b83\u4f7f\u7528\u6570\u7ec4\u4f5c\u4e3a\u5176\u5e95\u5c42\u6570\u636e\u7ed3\u6784\u3002<\/li>\n<\/ul>\n
        List<Integer> numbers = new ArrayList<>();\nnumbers.add(10);\nnumbers.add(20);<\/pre>\n
         \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
        4. \u4f7f\u7528\u6d41 API<\/strong><\/p>\n
        Java 8 \u4e2d\u5f15\u5165\u4e86\u6d41 API\uff0c\u5b83\u63d0\u4f9b\u4e86\u4e00\u79cd\u58f0\u660e\u5f0f\u7684\u65b9\u5f0f\u6765\u5904\u7406\u6570\u636e\u96c6\u5408\uff1a<\/p>\n
        int[] numbers = {1, 2, 3, 4, 5};\nint[] newArray = Arrays.stream(numbers).map(n -> n * 2).toArray();<\/pre>\n
         \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
        \u8fd9\u5c06\u521b\u5efa\u4e00\u4e2a\u65b0\u6570\u7ec4\uff0c\u5176\u4e2d\u6bcf\u4e2a\u5143\u7d20\u662f\u539f\u59cb\u6570\u7ec4\u4e2d\u76f8\u5e94\u5143\u7d20\u7684\u4e24\u500d\u3002<\/p>\n
        \u4ee5\u4e0a\u5c31\u662fjava\u600e\u4e48\u5411\u6570\u7ec4\u6dfb\u52a0\u6570\u636e\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":"
        \u5411 java \u6570\u7ec4\u6dfb\u52a0\u6570\u636e\u6709\u56db\u79cd\u65b9\u6cd5\uff1a\u4f7f\u7528\u6570\u7ec4\u7d22\u5f15\u76f4\u63a5\u8d4b\u503c\uff1b\u4f7f\u7528 arrays \u7c7b\u7684\u65b9\u6cd5\uff08arrays.fill() \u548c arrays.copyof()\uff09\uff1b\u4f7f\u7528\u96c6\u5408\u6846\u67b6\uff08list \u548c arraylist\uff09\uff1b\u4f7f\u7528\u6d41 api\uff08arrays.stream()\uff09\u3002 \u5982\u4f55\u5411 Java \u6570\u7ec4\u6dfb\u52a0\u6570\u636e Java \u6570\u7ec4\u662f\u4e00\u79cd\u56fa\u5b9a\u5927\u5c0f\u7684\u8fde\u7eed\u5185\u5b58\u5757\uff0c\u7528\u4e8e\u5b58\u50a8\u76f8\u540c\u7c7b\u578b\u7684\u6570\u636e\u5143\u7d20\u3002\u8981\u5411 Java \u6570\u7ec4\u6dfb\u52a0\u6570\u636e\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u65b9\u6cd5\uff1a 1. \u4f7f\u7528\u6570\u7ec4\u7d22\u5f15 \u76f4\u63a5\u4f7f\u7528\u6570\u7ec4\u7d22\u5f15\u53ef\u4ee5\u5411\u6570\u7ec4\u4e2d\u6dfb\u52a0\u5143\u7d20\uff1a \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b int[] numbers = new int[5]; numbers[0] = 10; numbers[1] = 20; \u767b\u5f55\u540e\u590d\u5236 2. \u4f7f\u7528\u6570\u7ec4\u7c7b Arrays \u7c7b\u63d0\u4f9b\u4e86\u8bb8\u591a\u64cd\u4f5c\u6570\u7ec4\u7684\u5b9e\u7528\u65b9\u6cd5\uff0c\u5305\u62ec Arrays.fill() \u548c Arrays.copyOf()\uff1a Arrays.fill()\uff1a\u4f7f\u7528\u6307\u5b9a\u503c\u586b\u5145\u6570\u7ec4\u7684\u6240\u6709\u5143\u7d20\uff1a Arrays.fill(numbers, 100); \u767b\u5f55\u540e\u590d\u5236 Arrays.copyOf()\uff1a\u521b\u5efa\u4e00\u4e2a\u65b0\u6570\u7ec4\uff0c\u662f\u539f\u59cb\u6570\u7ec4\u7684\u526f\u672c\uff0c\u5e76\u53ef\u6307\u5b9a\u65b0\u7684\u957f\u5ea6\uff1a int[] newArray = Arrays.copyOf(numbers, 10); newArray[5] = 30; \u767b\u5f55\u540e\u590d\u5236 3. […]<\/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-37949","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/37949","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=37949"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/37949\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=37949"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=37949"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=37949"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}