{"id":36749,"date":"2024-11-26T11:13:48","date_gmt":"2024-11-26T03:13:48","guid":{"rendered":"https:\/\/fwq.ai\/blog\/36749\/"},"modified":"2024-11-26T11:13:48","modified_gmt":"2024-11-26T03:13:48","slug":"java%e6%95%b0%e7%bb%84%e6%80%8e%e4%b9%88return","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/36749\/","title":{"rendered":"java\u6570\u7ec4\u600e\u4e48return"},"content":{"rendered":"<blockquote><p>\n  \u5982\u4f55\u4ece java \u6570\u7ec4\u4e2d\u8fd4\u56de\u6570\u636e\uff1f\u8fd4\u56de\u539f\u59cb\u6570\u7ec4\uff08\u76f4\u63a5\u8fd4\u56de\u539f\u59cb\u6570\u7ec4\uff09\uff1b\u8fd4\u56de\u6570\u7ec4\u7684\u526f\u672c\uff08\u901a\u8fc7 clone() \u590d\u5236\uff09\uff1b\u8fd4\u56de\u4e00\u4e2a list\uff08\u4f7f\u7528 arrays.aslist() \u8f6c\u6362\uff09\uff1b\u8fd4\u56de\u4e00\u4e2a\u6d41\uff08\u4f7f\u7528 intstream.of() \u8f6c\u6362\uff09\u3002\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202411\/12\/2024111215581349783.jpg\" class=\"aligncenter\" title=\"java\u6570\u7ec4\u600e\u4e48return\u63d2\u56fe\" alt=\"java\u6570\u7ec4\u600e\u4e48return\u63d2\u56fe\" \/><\/p>\n<p><strong>\u5982\u4f55\u4ece Java \u6570\u7ec4\u4e2d\u8fd4\u56de\u6570\u636e<\/strong><\/p>\n<p>\u5728 Java \u4e2d\uff0c\u4ece\u6570\u7ec4\u4e2d\u8fd4\u56de\u6570\u636e\u7684\u65b9\u6cd5\u4e3b\u8981\u6709\uff1a<\/p>\n<p><strong>1. \u8fd4\u56de\u539f\u59cb\u6570\u7ec4<\/strong><\/p>\n<p>\u8fd9\u662f\u6700\u7b80\u5355\u7684\u65b9\u6cd5\uff0c\u4f46\u5e76\u4e0d\u662f\u5728\u6240\u6709\u60c5\u51b5\u4e0b\u90fd\u5408\u9002\u3002\u5982\u679c\u65b9\u6cd5\u9700\u8981\u4fee\u6539\u8fd4\u56de\u7684\u6570\u636e\uff0c\u5219\u4e0d\u5e94\u4f7f\u7528\u6b64\u65b9\u6cd5\u3002\u4f8b\u5982\uff1a<\/p>\n<p><span>\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n<pre>int[] getArray() {\n    int[] arr = {1, 2, 3};\n    return arr;\n}<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>2. \u8fd4\u56de\u6570\u7ec4\u7684\u526f\u672c<\/strong><\/p>\n<p>\u6b64\u65b9\u6cd5\u8fd4\u56de\u6570\u7ec4\u7684\u4e00\u4e2a\u526f\u672c\uff0c\u56e0\u6b64\u4e0d\u4f1a\u4fee\u6539\u539f\u59cb\u6570\u7ec4\u3002\u5b83\u901a\u5e38\u662f\u9996\u9009\u7684\u65b9\u6cd5\uff0c\u7279\u522b\u662f\u5f53\u65b9\u6cd5\u9700\u8981\u4fee\u6539\u8fd4\u56de\u7684\u6570\u636e\u65f6\u3002\u4f8b\u5982\uff1a<\/p>\n<pre>int[] getArrayCopy() {\n    int[] arr = {1, 2, 3};\n    return arr.clone();\n}<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>3. \u8fd4\u56de\u4e00\u4e2a List<\/strong><\/p>\n<p>\u6b64\u65b9\u6cd5\u8fd4\u56de\u6570\u7ec4\u5143\u7d20\u7684 List\uff0c\u5b83\u63d0\u4f9b\u4e86\u6bd4\u6570\u7ec4\u66f4\u7075\u6d3b\u7684\u96c6\u5408\u3002\u4f8b\u5982\uff1a<\/p>\n<pre>List&lt;Integer&gt; getArrayList() {\n    int[] arr = {1, 2, 3};\n    return Arrays.asList(arr);\n}<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>4. \u8fd4\u56de\u4e00\u4e2a\u6d41<\/strong><\/p>\n<p>\u6b64\u65b9\u6cd5\u8fd4\u56de\u6570\u7ec4\u5143\u7d20\u7684\u6d41\uff0c\u5b83\u5141\u8bb8\u4f7f\u7528\u6d41 API \u8fdb\u884c\u8fdb\u4e00\u6b65\u7684\u5904\u7406\u3002\u4f8b\u5982\uff1a<\/p>\n<pre>IntStream getStream() {\n    int[] arr = {1, 2, 3};\n    return IntStream.of(arr);\n}<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u9009\u62e9\u5408\u9002\u7684\u65b9\u6cd5<\/strong><\/p>\n<p>\u9009\u62e9\u54ea\u79cd\u65b9\u6cd5\u53d6\u51b3\u4e8e\u5177\u4f53\u60c5\u51b5\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u6307\u5bfc\u539f\u5219\uff1a<\/p>\n<ul>\n<li>\u5982\u679c\u65b9\u6cd5\u4e0d\u9700\u8981\u4fee\u6539\u8fd4\u56de\u7684\u6570\u636e\uff0c\u5219\u8fd4\u56de\u539f\u59cb\u6570\u7ec4\u3002<\/li>\n<li>\u5982\u679c\u65b9\u6cd5\u9700\u8981\u4fee\u6539\u8fd4\u56de\u7684\u6570\u636e\uff0c\u5219\u8fd4\u56de\u6570\u7ec4\u7684\u526f\u672c\u3002<\/li>\n<li>\u5982\u679c\u9700\u8981\u66f4\u7075\u6d3b\u7684\u96c6\u5408\uff0c\u5219\u8fd4\u56de\u4e00\u4e2a List\u3002<\/li>\n<li>\u5982\u679c\u9700\u8981\u5bf9\u6570\u7ec4\u5143\u7d20\u8fdb\u884c\u6d41\u5904\u7406\uff0c\u5219\u8fd4\u56de\u4e00\u4e2a\u6d41\u3002<\/li>\n<\/ul>\n<p>\u4ee5\u4e0a\u5c31\u662fjava\u6570\u7ec4\u600e\u4e48return\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":"<p>\u5982\u4f55\u4ece java \u6570\u7ec4\u4e2d\u8fd4\u56de\u6570\u636e\uff1f\u8fd4\u56de\u539f\u59cb\u6570\u7ec4\uff08\u76f4\u63a5\u8fd4\u56de\u539f\u59cb\u6570\u7ec4\uff09\uff1b\u8fd4\u56de\u6570\u7ec4\u7684\u526f\u672c\uff08\u901a\u8fc7 clone() \u590d\u5236\uff09\uff1b\u8fd4\u56de\u4e00\u4e2a list\uff08\u4f7f\u7528 arrays.aslist() \u8f6c\u6362\uff09\uff1b\u8fd4\u56de\u4e00\u4e2a\u6d41\uff08\u4f7f\u7528 intstream.of() \u8f6c\u6362\uff09\u3002 \u5982\u4f55\u4ece Java \u6570\u7ec4\u4e2d\u8fd4\u56de\u6570\u636e \u5728 Java \u4e2d\uff0c\u4ece\u6570\u7ec4\u4e2d\u8fd4\u56de\u6570\u636e\u7684\u65b9\u6cd5\u4e3b\u8981\u6709\uff1a 1. \u8fd4\u56de\u539f\u59cb\u6570\u7ec4 \u8fd9\u662f\u6700\u7b80\u5355\u7684\u65b9\u6cd5\uff0c\u4f46\u5e76\u4e0d\u662f\u5728\u6240\u6709\u60c5\u51b5\u4e0b\u90fd\u5408\u9002\u3002\u5982\u679c\u65b9\u6cd5\u9700\u8981\u4fee\u6539\u8fd4\u56de\u7684\u6570\u636e\uff0c\u5219\u4e0d\u5e94\u4f7f\u7528\u6b64\u65b9\u6cd5\u3002\u4f8b\u5982\uff1a \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b int[] getArray() { int[] arr = {1, 2, 3}; return arr; } \u767b\u5f55\u540e\u590d\u5236 2. \u8fd4\u56de\u6570\u7ec4\u7684\u526f\u672c \u6b64\u65b9\u6cd5\u8fd4\u56de\u6570\u7ec4\u7684\u4e00\u4e2a\u526f\u672c\uff0c\u56e0\u6b64\u4e0d\u4f1a\u4fee\u6539\u539f\u59cb\u6570\u7ec4\u3002\u5b83\u901a\u5e38\u662f\u9996\u9009\u7684\u65b9\u6cd5\uff0c\u7279\u522b\u662f\u5f53\u65b9\u6cd5\u9700\u8981\u4fee\u6539\u8fd4\u56de\u7684\u6570\u636e\u65f6\u3002\u4f8b\u5982\uff1a int[] getArrayCopy() { int[] arr = {1, 2, 3}; return arr.clone(); } \u767b\u5f55\u540e\u590d\u5236 3. \u8fd4\u56de\u4e00\u4e2a List \u6b64\u65b9\u6cd5\u8fd4\u56de\u6570\u7ec4\u5143\u7d20\u7684 List\uff0c\u5b83\u63d0\u4f9b\u4e86\u6bd4\u6570\u7ec4\u66f4\u7075\u6d3b\u7684\u96c6\u5408\u3002\u4f8b\u5982\uff1a List&lt;Integer&gt; [&hellip;]<\/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-36749","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/36749","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=36749"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/36749\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=36749"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=36749"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=36749"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}