{"id":47508,"date":"2024-12-02T11:17:18","date_gmt":"2024-12-02T03:17:18","guid":{"rendered":"https:\/\/fwq.ai\/blog\/47508\/"},"modified":"2024-12-02T11:17:18","modified_gmt":"2024-12-02T03:17:18","slug":"java-%e5%87%bd%e6%95%b0%e4%b8%ad%e4%bd%bf%e7%94%a8-varargs-%e5%8f%82%e6%95%b0%e7%9a%84%e4%bc%98%e7%82%b9%e6%9c%89%e5%93%aa%e4%ba%9b%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/47508\/","title":{"rendered":"Java \u51fd\u6570\u4e2d\u4f7f\u7528 varargs \u53c2\u6570\u7684\u4f18\u70b9\u6709\u54ea\u4e9b\uff1f"},"content":{"rendered":"

<\/b> <\/p>\n

Java \u51fd\u6570\u4e2d\u4f7f\u7528 varargs \u53c2\u6570\u7684\u4f18\u70b9\u6709\u54ea\u4e9b\uff1f<\/h1>\n

\u6587\u7ae0<\/span>\u4e0d\u77e5\u9053\u5927\u5bb6\u662f\u5426\u719f\u6089\uff1f\u4eca\u5929\u6211\u5c06\u7ed9\u5927\u5bb6\u4ecb\u7ecd\u300aJava \u51fd\u6570\u4e2d\u4f7f\u7528 varargs \u53c2\u6570\u7684\u4f18\u70b9\u6709\u54ea\u4e9b\uff1f\u300b<\/span>\uff0c\u8fd9\u7bc7\u6587\u7ae0\u4e3b\u8981\u4f1a\u8bb2\u5230<\/span>\u7b49\u7b49\u77e5\u8bc6\u70b9\uff0c\u5982\u679c\u4f60\u5728\u770b\u5b8c\u672c\u7bc7\u6587\u7ae0\u540e\uff0c\u6709\u66f4\u597d\u7684\u5efa\u8bae\u6216\u8005\u53d1\u73b0\u54ea\u91cc\u6709\u95ee\u9898\uff0c\u5e0c\u671b\u5927\u5bb6\u90fd\u80fd\u79ef\u6781\u8bc4\u8bba\u6307\u51fa\uff0c\u8c22\u8c22\uff01\u5e0c\u671b\u6211\u4eec\u80fd\u4e00\u8d77\u52a0\u6cb9\u8fdb\u6b65\uff01<\/p>\n

\"Java<\/p>\n

Java \u4e2d\u4f7f\u7528 varargs \u53c2\u6570\u7684 5 \u4e2a\u4f18\u70b9<\/strong><\/p>\n

\u7b80\u4ecb<\/strong>
varargs\uff08\u53ef\u53d8\u53c2\u6570\uff09\u53c2\u6570\u5141\u8bb8\u5728 Java \u51fd\u6570\u4e2d\u4f20\u9012\u53ef\u53d8\u6570\u91cf\u7684\u53c2\u6570\u3002\u5b83\u63d0\u4f9b\u4e86\u4e00\u79cd\u65b9\u4fbf\u7684\u65b9\u6cd5\u6765\u5904\u7406\u52a8\u6001\u521b\u5efa\u6216\u6570\u91cf\u672a\u77e5\u7684\u6570\u636e\u3002<\/p>\n

\u4f18\u70b9<\/strong><\/p>\n

1. \u7075\u6d3b\u6027\u548c\u4fbf\u5229\u6027<\/strong>
varargs \u53c2\u6570\u5141\u8bb8\u51fd\u6570\u63a5\u53d7\u4e0d\u540c\u6570\u91cf\u7684\u53c2\u6570\uff0c\u8fd9\u5728\u5904\u7406\u6765\u81ea\u4e0d\u540c\u6765\u6e90\u6216\u5177\u6709\u4e0d\u540c\u683c\u5f0f\u7684\u6570\u636e\u65f6\u975e\u5e38\u6709\u7528\u3002\u5b83\u6d88\u9664\u4e86\u521b\u5efa\u5177\u6709\u591a\u4e2a\u56fa\u5b9a\u53c2\u6570\u7684\u51fd\u6570\u7684\u9700\u8981\u3002<\/p>\n

public static int sum(int... numbers) {\n  int total = 0;\n  for (int number : numbers) {\n    total += number;\n  }\n  return total;\n}<\/pre>\n
2. \u53ef\u6269\u5c55\u6027<\/strong>
\u4f7f\u7528 varargs \u53c2\u6570\uff0c\u53ef\u4ee5\u8f7b\u677e\u5730\u6269\u5c55\u73b0\u6709\u7684\u51fd\u6570\u4ee5\u63a5\u53d7\u66f4\u591a\u53c2\u6570\uff0c\u800c\u65e0\u9700\u4fee\u6539\u51fd\u6570\u7b7e\u540d\u3002\u8fd9\u4f7f\u5f97\u4ee3\u7801\u7ef4\u62a4\u53d8\u5f97\u66f4\u52a0\u5bb9\u6613\u3002<\/p>\n
public static String formatMessage(String format, Object... args) {\n  return String.format(format, args);\n}<\/pre>\n
3. \u53ef\u91cd\u7528\u6027<\/strong>
varargs \u53c2\u6570\u53ef\u4ee5\u63d0\u9ad8\u4ee3\u7801\u7684\u53ef\u91cd\u7528\u6027\u3002\u53ef\u4ee5\u521b\u5efa\u4e00\u4e2a\u901a\u7528\u7684\u51fd\u6570\u6765\u5904\u7406\u4e0d\u540c\u957f\u5ea6\u7684\u6570\u636e\uff0c\u4ece\u800c\u907f\u514d\u4e3a\u6bcf\u79cd\u60c5\u51b5\u521b\u5efa\u5355\u72ec\u7684\u51fd\u6570\u3002<\/p>\n
public static void printArray(int[] array) {\n  for (int element : array) {\n    System.out.print(element + \" \");\n  }\n  System.out.println();\n}<\/pre>\n
4. \u53ef\u8bfb\u6027<\/strong>
varargs \u53c2\u6570\u53ef\u4ee5\u4f7f\u4ee3\u7801\u66f4\u52a0\u6613\u8bfb\u548c\u7b80\u6d01\u3002\u5b83\u6d88\u9664\u4e86\u4f7f\u7528\u6570\u7ec4\u6216\u5217\u8868\u6765\u4f20\u9012\u53ef\u53d8\u53c2\u6570\u7684\u9700\u8981\uff0c\u4ece\u800c\u7b80\u5316\u4e86\u51fd\u6570\u7b7e\u540d\u3002<\/p>\n
public static double calculateAverage(double... values) {\n  double sum = 0;\n  for (double value : values) {\n    sum += value;\n  }\n  return sum \/ values.length;\n}<\/pre>\n
5. \u6027\u80fd<\/strong>
varargs \u53c2\u6570\u5728\u67d0\u4e9b\u60c5\u51b5\u4e0b\u53ef\u4ee5\u63d0\u4f9b\u6027\u80fd\u4f18\u52bf\u3002\u901a\u8fc7\u4f20\u9012\u539f\u59cb\u6570\u636e\u7c7b\u578b\u800c\u4e0d\u662f\u6570\u7ec4\u6216\u5217\u8868\uff0c\u53ef\u4ee5\u51cf\u5c11\u5f00\u9500\u548c\u5185\u5b58\u5206\u914d\u3002<\/p>\n
\u5b9e\u6218\u6848\u4f8b<\/strong><\/p>\n
import java.util.*;\n\npublic class VarargsExample {\n\n  public static void main(String[] args) {\n    int[] numbers1 = { 1, 2, 3, 4, 5 };\n    int[] numbers2 = { 6, 7, 8 };\n\n    \/\/ \u4f7f\u7528 varargs \u53c2\u6570\u8ba1\u7b97\u4e24\u4e2a\u6570\u7ec4\u7684\u603b\u548c\n    int sum1 = sum(numbers1);\n    int sum2 = sum(numbers2);\n    System.out.println(\"Sum of numbers1: \" + sum1); \/\/ \u8f93\u51fa\uff1a15\n    System.out.println(\"Sum of numbers2: \" + sum2); \/\/ \u8f93\u51fa\uff1a21\n\n    \/\/ \u4f7f\u7528 varargs \u53c2\u6570\u6253\u5370\u4e00\u4e2a\u5217\u8868\u4e2d\u7684\u6240\u6709\u5143\u7d20\n    List<String> names = List.of(\"John\", \"Mary\", \"Bob\");\n    printElements(names); \/\/ \u8f93\u51fa\uff1aJohn Mary Bob\n  }\n\n  public static int sum(int... numbers) {\n    int total = 0;\n    for (int number : numbers) {\n      total += number;\n    }\n    return total;\n  }\n\n  public static void printElements(List<String>... elements) {\n    for (List<String> list : elements) {\n      for (String element : list) {\n        System.out.print(element + \" \");\n      }\n      System.out.println();\n    }\n  }\n}<\/pre>\n
\u6587\u4e2d\u5173\u4e8ejava,varargs\u7684\u77e5\u8bc6\u4ecb\u7ecd\uff0c\u5e0c\u671b\u5bf9\u4f60\u7684\u5b66\u4e60\u6709\u6240\u5e2e\u52a9\uff01\u82e5\u662f\u53d7\u76ca\u532a\u6d45\uff0c\u90a3\u5c31\u52a8\u52a8\u9f20\u6807\u6536\u85cf\u8fd9\u7bc7\u300aJava \u51fd\u6570\u4e2d\u4f7f\u7528 varargs \u53c2\u6570\u7684\u4f18\u70b9\u6709\u54ea\u4e9b\uff1f\u300b\u6587\u7ae0\u5427\uff0c\u4e5f\u53ef\u5173\u6ce8\u7c73\u4e91\u516c\u4f17\u53f7\u4e86\u89e3\u76f8\u5173\u6280\u672f\u6587\u7ae0\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
Java \u51fd\u6570\u4e2d\u4f7f\u7528 varargs \u53c2\u6570\u7684\u4f18\u70b9\u6709\u54ea\u4e9b\uff1f \u6587\u7ae0\u4e0d\u77e5\u9053\u5927\u5bb6\u662f\u5426\u719f\u6089\uff1f\u4eca\u5929\u6211\u5c06\u7ed9\u5927\u5bb6\u4ecb\u7ecd\u300aJava \u51fd\u6570\u4e2d\u4f7f\u7528 varargs \u53c2\u6570\u7684\u4f18\u70b9\u6709\u54ea\u4e9b\uff1f\u300b\uff0c\u8fd9\u7bc7\u6587\u7ae0\u4e3b\u8981\u4f1a\u8bb2\u5230\u7b49\u7b49\u77e5\u8bc6\u70b9\uff0c\u5982\u679c\u4f60\u5728\u770b\u5b8c\u672c\u7bc7\u6587\u7ae0\u540e\uff0c\u6709\u66f4\u597d\u7684\u5efa\u8bae\u6216\u8005\u53d1\u73b0\u54ea\u91cc\u6709\u95ee\u9898\uff0c\u5e0c\u671b\u5927\u5bb6\u90fd\u80fd\u79ef\u6781\u8bc4\u8bba\u6307\u51fa\uff0c\u8c22\u8c22\uff01\u5e0c\u671b\u6211\u4eec\u80fd\u4e00\u8d77\u52a0\u6cb9\u8fdb\u6b65\uff01 Java \u4e2d\u4f7f\u7528 varargs \u53c2\u6570\u7684 5 \u4e2a\u4f18\u70b9 \u7b80\u4ecbvarargs\uff08\u53ef\u53d8\u53c2\u6570\uff09\u53c2\u6570\u5141\u8bb8\u5728 Java \u51fd\u6570\u4e2d\u4f20\u9012\u53ef\u53d8\u6570\u91cf\u7684\u53c2\u6570\u3002\u5b83\u63d0\u4f9b\u4e86\u4e00\u79cd\u65b9\u4fbf\u7684\u65b9\u6cd5\u6765\u5904\u7406\u52a8\u6001\u521b\u5efa\u6216\u6570\u91cf\u672a\u77e5\u7684\u6570\u636e\u3002 \u4f18\u70b9 1. \u7075\u6d3b\u6027\u548c\u4fbf\u5229\u6027varargs \u53c2\u6570\u5141\u8bb8\u51fd\u6570\u63a5\u53d7\u4e0d\u540c\u6570\u91cf\u7684\u53c2\u6570\uff0c\u8fd9\u5728\u5904\u7406\u6765\u81ea\u4e0d\u540c\u6765\u6e90\u6216\u5177\u6709\u4e0d\u540c\u683c\u5f0f\u7684\u6570\u636e\u65f6\u975e\u5e38\u6709\u7528\u3002\u5b83\u6d88\u9664\u4e86\u521b\u5efa\u5177\u6709\u591a\u4e2a\u56fa\u5b9a\u53c2\u6570\u7684\u51fd\u6570\u7684\u9700\u8981\u3002 public static int sum(int… numbers) { int total = 0; for (int number : numbers) { total += number; } return total; } 2. \u53ef\u6269\u5c55\u6027\u4f7f\u7528 varargs \u53c2\u6570\uff0c\u53ef\u4ee5\u8f7b\u677e\u5730\u6269\u5c55\u73b0\u6709\u7684\u51fd\u6570\u4ee5\u63a5\u53d7\u66f4\u591a\u53c2\u6570\uff0c\u800c\u65e0\u9700\u4fee\u6539\u51fd\u6570\u7b7e\u540d\u3002\u8fd9\u4f7f\u5f97\u4ee3\u7801\u7ef4\u62a4\u53d8\u5f97\u66f4\u52a0\u5bb9\u6613\u3002 public static String formatMessage(String format, Object… args) […]<\/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-47508","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/47508","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=47508"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/47508\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=47508"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=47508"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=47508"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}