{"id":39940,"date":"2024-11-26T09:20:39","date_gmt":"2024-11-26T01:20:39","guid":{"rendered":"https:\/\/fwq.ai\/blog\/39940\/"},"modified":"2024-11-26T09:20:39","modified_gmt":"2024-11-26T01:20:39","slug":"java%e9%87%8c%e6%80%8e%e4%b9%88%e8%bf%94%e5%9b%9e%e4%b8%80%e4%b8%aa%e6%95%b0%e7%bb%84","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/39940\/","title":{"rendered":"java\u91cc\u600e\u4e48\u8fd4\u56de\u4e00\u4e2a\u6570\u7ec4"},"content":{"rendered":"

\n \u76f4\u63a5\u8fd4\u56de\u6570\u7ec4\uff0c\u4f7f\u7528 int[] getarray() \u65b9\u6cd5\u3002\u6b64\u5916\uff0c\u8fd8\u53ef\u4ee5\u4f7f\u7528 collections.toarray() \u65b9\u6cd5\u4ece list \u6216 set \u8f6c\u6362\u4e3a\u6570\u7ec4\uff0c\u4f7f\u7528\u539f\u59cb\u7c7b\u578b\u6570\u7ec4\u6216\u7c7b\u578b\u7684\u53c2\u6570\u5316\u6570\u7ec4\u3002\u52a1\u5fc5\u521b\u5efa\u6570\u7ec4\u7684\u65b0\u5b9e\u4f8b\uff0c\u5e76\u6307\u5b9a\u6570\u7ec4\u5927\u5c0f\u4ee5\u907f\u514d\u4e0d\u5fc5\u8981\u7684\u5185\u5b58\u5206\u914d\u3002\n<\/p><\/blockquote>\n

\"java\u91cc\u600e\u4e48\u8fd4\u56de\u4e00\u4e2a\u6570\u7ec4\u63d2\u56fe\"<\/p>\n

\u5982\u4f55\u5728 Java \u4e2d\u8fd4\u56de\u6570\u7ec4<\/strong><\/p>\n

\u76f4\u63a5\u8fd4\u56de\u6570\u7ec4\uff1a<\/strong><\/p>\n

public int[] getArray() {\n    int[] myArray = {1, 2, 3};\n    return myArray;\n}<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u4f7f\u7528 Collections.toArray() \u65b9\u6cd5\uff1a<\/strong><\/p>\n
List \u63a5\u53e3\u548c Set \u63a5\u53e3\u63d0\u4f9b toArray() \u65b9\u6cd5\uff0c\u53ef\u5c06\u5143\u7d20\u5217\u8868\u8f6c\u6362\u4e3a\u6570\u7ec4\u3002<\/p>\n
\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n
public String[] getStringArray() {\n    List<String> myList = new ArrayList<>();\n    myList.add(\"one\");\n    myList.add(\"two\");\n    myList.add(\"three\");\n    \n    return myList.toArray(new String[myList.size()]);\n}<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u4f7f\u7528\u539f\u59cb\u7c7b\u578b\u6570\u7ec4\uff1a<\/strong><\/p>\n
\u5bf9\u4e8e\u57fa\u672c\u6570\u636e\u7c7b\u578b\uff08\u5982 int\u3001float\u3001boolean\uff09\uff0c\u53ef\u4ee5\u4f7f\u7528\u539f\u59cb\u7c7b\u578b\u6570\u7ec4\u3002<\/p>\n
public int[] getIntArray() {\n    return new int[] {1, 2, 3};\n}<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u4f7f\u7528\u7c7b\u578b\u53c2\u6570\u5316\u6570\u7ec4\uff1a<\/strong><\/p>\n
\u5bf9\u4e8e\u6cdb\u578b\u96c6\u5408\uff0c\u53ef\u4ee5\u4f7f\u7528\u7c7b\u578b\u53c2\u6570\u5316\u7684\u6570\u7ec4\u6765\u6307\u5b9a\u8fd4\u56de\u6570\u7ec4\u7684\u5143\u7d20\u7c7b\u578b\u3002<\/p>\n
public <T> T[] getArray(Class<T> clazz) {\n    T[] myArray = (T[]) Array.newInstance(clazz, 3);\n    myArray[0] = ...;\n    myArray[1] = ...;\n    myArray[2] = ...;\n    return myArray;\n}<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u6ce8\u610f\uff1a<\/strong><\/p>\n
    \n
  • \u59cb\u7ec8\u521b\u5efa\u6570\u7ec4\u7684\u65b0\u5b9e\u4f8b\uff0c\u4ee5\u907f\u514d\u8fd4\u56de\u5bf9\u57fa\u672c\u6570\u636e\u7c7b\u578b\u6570\u7ec4\u6216\u6cdb\u578b\u6570\u7ec4\u7684\u5f15\u7528\u3002<\/li>\n
  • \u5c06 List \u6216 Set \u8f6c\u6362\u4e3a\u6570\u7ec4\u65f6\uff0c\u6307\u5b9a\u6570\u7ec4\u5927\u5c0f\u4ee5\u907f\u514d\u521b\u5efa\u8fc7\u5927\u6216\u8fc7\u5c0f\u7684\u6570\u7ec4\u3002<\/li>\n<\/ul>\n
    \u4ee5\u4e0a\u5c31\u662fjava\u91cc\u600e\u4e48\u8fd4\u56de\u4e00\u4e2a\u6570\u7ec4\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":"
    \u76f4\u63a5\u8fd4\u56de\u6570\u7ec4\uff0c\u4f7f\u7528 int[] getarray() \u65b9\u6cd5\u3002\u6b64\u5916\uff0c\u8fd8\u53ef\u4ee5\u4f7f\u7528 collections.toarray() \u65b9\u6cd5\u4ece list \u6216 set \u8f6c\u6362\u4e3a\u6570\u7ec4\uff0c\u4f7f\u7528\u539f\u59cb\u7c7b\u578b\u6570\u7ec4\u6216\u7c7b\u578b\u7684\u53c2\u6570\u5316\u6570\u7ec4\u3002\u52a1\u5fc5\u521b\u5efa\u6570\u7ec4\u7684\u65b0\u5b9e\u4f8b\uff0c\u5e76\u6307\u5b9a\u6570\u7ec4\u5927\u5c0f\u4ee5\u907f\u514d\u4e0d\u5fc5\u8981\u7684\u5185\u5b58\u5206\u914d\u3002 \u5982\u4f55\u5728 Java \u4e2d\u8fd4\u56de\u6570\u7ec4 \u76f4\u63a5\u8fd4\u56de\u6570\u7ec4\uff1a public int[] getArray() { int[] myArray = {1, 2, 3}; return myArray; } \u767b\u5f55\u540e\u590d\u5236 \u4f7f\u7528 Collections.toArray() \u65b9\u6cd5\uff1a List \u63a5\u53e3\u548c Set \u63a5\u53e3\u63d0\u4f9b toArray() \u65b9\u6cd5\uff0c\u53ef\u5c06\u5143\u7d20\u5217\u8868\u8f6c\u6362\u4e3a\u6570\u7ec4\u3002 \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b public String[] getStringArray() { List<String> myList = new ArrayList<>(); myList.add(“one”); myList.add(“two”); myList.add(“three”); return myList.toArray(new String[myList.size()]); } \u767b\u5f55\u540e\u590d\u5236 […]<\/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-39940","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/39940","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=39940"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/39940\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=39940"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=39940"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=39940"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}