{"id":203040,"date":"2025-05-22T11:46:02","date_gmt":"2025-05-22T03:46:02","guid":{"rendered":"https:\/\/server.hk\/cnblog\/203040\/"},"modified":"2025-05-22T11:46:02","modified_gmt":"2025-05-22T03:46:02","slug":"java-%e5%87%bd%e6%95%b0%e4%b8%ad%e7%9a%84%e6%b3%9b%e5%9e%8b%e6%98%af%e5%a6%82%e4%bd%95%e5%8f%91%e6%8c%a5%e4%bd%9c%e7%94%a8%e7%9a%84%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/203040\/","title":{"rendered":"Java \u51fd\u6570\u4e2d\u7684\u6cdb\u578b\u662f\u5982\u4f55\u53d1\u6325\u4f5c\u7528\u7684\uff1f"},"content":{"rendered":"

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

Java \u51fd\u6570\u4e2d\u7684\u6cdb\u578b\u662f\u5982\u4f55\u53d1\u6325\u4f5c\u7528\u7684\uff1f<\/h1>\n

\u5c0f\u4f19\u4f34\u4eec\u5bf9\u6587\u7ae0\u7f16\u7a0b\u611f\u5174\u8da3\u5417\uff1f\u662f\u5426\u6b63\u5728\u5b66\u4e60\u76f8\u5173\u77e5\u8bc6\u70b9\uff1f\u5982\u679c\u662f\uff0c\u90a3\u4e48\u672c\u6587\u300aJava \u51fd\u6570\u4e2d\u7684\u6cdb\u578b\u662f\u5982\u4f55\u53d1\u6325\u4f5c\u7528\u7684\uff1f\u300b\uff0c\u5c31\u5f88\u9002\u5408\u4f60\uff0c\u672c\u7bc7\u6587\u7ae0\u8bb2\u89e3\u7684\u77e5\u8bc6\u70b9\u4e3b\u8981\u5305\u62ec\u3002\u5728\u4e4b\u540e\u7684\u6587\u7ae0\u4e2d\u4e5f\u4f1a\u591a\u591a\u5206\u4eab\u76f8\u5173\u77e5\u8bc6\u70b9\uff0c\u5e0c\u671b\u5bf9\u5927\u5bb6\u7684\u77e5\u8bc6\u79ef\u7d2f\u6709\u6240\u5e2e\u52a9\uff01<\/p>\n

Java \u6cdb\u578b\u5141\u8bb8\u521b\u5efa\u53ef\u7528\u4e8e\u5404\u79cd\u7c7b\u578b\u53c2\u6570\u7684\u51fd\u6570\uff0c\u4ece\u800c\u589e\u5f3a\u4ee3\u7801\u901a\u7528\u6027\u3002\u5728 Java \u4e2d\uff0c\u6cdb\u578b\u5728\u7f16\u8bd1\u65f6\u88ab\u64e6\u9664\uff0c\u4ee5\u63d0\u5347\u6027\u80fd\u3002\u4f7f\u7528\u6cdb\u578b\u7684\u793a\u4f8b\u5305\u62ec\u58f0\u660e\u4e3a\u901a\u7528\u7684 printList \u65b9\u6cd5\uff0c\u5b83\u53ef\u4ee5\u6253\u5370\u4efb\u4f55\u7c7b\u578b\u53c2\u6570\u5217\u8868\uff0c\u5982\u5b57\u7b26\u4e32\u548c\u6574\u6570\u5217\u8868\u3002<\/p>\n

<\/p>\n

Java \u51fd\u6570\u4e2d\u7684\u6cdb\u578b<\/strong><\/p>\n

\u6cdb\u578b\u5141\u8bb8\u60a8\u521b\u5efa\u53ef\u7528\u4e8e\u5404\u79cd\u7c7b\u578b\u53c2\u6570\u7684\u51fd\u6570\u3002\u8fd9\u6837\u53ef\u4ee5\u7f16\u5199\u66f4\u901a\u7528\u7684\u4ee3\u7801\uff0c\u51cf\u5c11\u91cd\u590d\u548c\u9519\u8bef\u3002<\/p>\n

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

\u6cdb\u578b\u51fd\u6570\u4f7f\u7528\u5c16\u62ec\u53f7 <> \u58f0\u660e\u7c7b\u578b\u53c2\u6570\u3002\u4f8b\u5982\uff1a<\/p>\n

<T> void myFunction(T t) {\n  \/\/ ...\n}<\/pre>\n
\u64e6\u9664<\/strong><\/p>\n
Java \u4e2d\u7684\u6cdb\u578b\u5728\u7f16\u8bd1\u65f6\u88ab\u64e6\u9664\uff0c\u8fd9\u610f\u5473\u7740 Java \u5b57\u8282\u7801\u4e0d\u5305\u542b\u7c7b\u578b\u53c2\u6570\u3002\u8fd9\u6709\u52a9\u4e8e\u63d0\u9ad8\u4ee3\u7801\u6027\u80fd\uff0c\u4f46\u4e5f\u6709\u5176\u5c40\u9650\u6027\u3002<\/p>\n
\u5b9e\u6218\u6848\u4f8b<\/strong><\/p>\n
\u4e0b\u9762\u662f\u4e00\u4e2a\u4f7f\u7528\u6cdb\u578b\u7684\u7b80\u5355\u793a\u4f8b\uff1a<\/p>\n
import java.util.ArrayList;\n\npublic class Main {\n\n  public static <T> void printList(ArrayList<T> list) {\n    for (T item : list) {\n      System.out.println(item);\n    }\n  }\n\n  public static void main(String[] args) {\n    ArrayList<String> strings = new ArrayList<>();\n    strings.add(\"Hello\");\n    strings.add(\"World\");\n\n    ArrayList<Integer> numbers = new ArrayList<>();\n    numbers.add(1);\n    numbers.add(2);\n\n    \/\/ \u4f7f\u7528\u6cdb\u578b\u65b9\u6cd5\u6253\u5370\u4e24\u4e2a\u5217\u8868\n    printList(strings);\n    printList(numbers);\n  }\n}<\/pre>\n
\u8f93\u51fa\uff1a<\/p>\n
Hello\nWorld\n1\n2<\/pre>\n
\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0cprintList<\/code> \u65b9\u6cd5\u88ab\u58f0\u660e\u4e3a\u901a\u7528\u7684\uff0c\u5b83\u53ef\u4ee5\u63a5\u53d7\u4efb\u4f55\u7c7b\u578b\u53c2\u6570\uff0c\u53ea\u8981\u5b83\u5b9e\u73b0\u4e86 List<\/code> \u63a5\u53e3\u3002\u56e0\u6b64\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u5b83\u6765\u6253\u5370\u5b57\u7b26\u4e32\u548c\u6574\u6570\u5217\u8868\u3002<\/p>\n
\u4eca\u5929\u5e26\u5927\u5bb6\u4e86\u89e3\u4e86\u7684\u76f8\u5173\u77e5\u8bc6\uff0c\u5e0c\u671b\u5bf9\u4f60\u6709\u6240\u5e2e\u52a9\uff1b\u5173\u4e8e\u6587\u7ae0\u7684\u6280\u672f\u77e5\u8bc6\u6211\u4eec\u4f1a\u4e00\u70b9\u70b9\u6df1\u5165\u4ecb\u7ecd\uff0c\u6b22\u8fce\u5927\u5bb6\u5173\u6ce8\u516c\u4f17\u53f7\uff0c\u4e00\u8d77\u5b66\u4e60\u7f16\u7a0b~<\/p>\n","protected":false},"excerpt":{"rendered":"
Java \u51fd\u6570\u4e2d\u7684\u6cdb\u578b\u662f\u5982\u4f55\u53d1\u6325...<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4925],"tags":[],"class_list":["post-203040","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/203040","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=203040"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/203040\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=203040"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=203040"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=203040"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}