{"id":34815,"date":"2024-11-26T09:35:10","date_gmt":"2024-11-26T01:35:10","guid":{"rendered":"https:\/\/fwq.ai\/blog\/34815\/"},"modified":"2024-11-26T09:35:10","modified_gmt":"2024-11-26T01:35:10","slug":"java-%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\/34815\/","title":{"rendered":"java \u600e\u4e48\u8fd4\u56de\u4e00\u4e2a\u6570\u7ec4"},"content":{"rendered":"

\n \u5728 java \u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528\u76f4\u63a5\u8fd4\u56de\u6570\u7ec4\u3001\u6cdb\u578b\u65b9\u6cd5\u3001\u521b\u5efa array \u5bf9\u8c61\u6216 arrays.copyof() \u65b9\u6cd5\u6765\u8fd4\u56de\u4e00\u4e2a\u6570\u7ec4\u3002\u5177\u4f53\u9009\u62e9\u53d6\u51b3\u4e8e\u6570\u7ec4\u7c7b\u578b\u548c\u573a\u666f\u8981\u6c42\u3002\n<\/p><\/blockquote>\n

\"java<\/p>\n

\u5982\u4f55\u7528 Java \u8fd4\u56de\u4e00\u4e2a\u6570\u7ec4<\/strong><\/p>\n

\u5728 Java \u4e2d\uff0c\u6709\u51e0\u79cd\u65b9\u6cd5\u53ef\u4ee5\u8fd4\u56de\u4e00\u4e2a\u6570\u7ec4\uff1a<\/p>\n

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

public int[] getIntArray() {\n    int[] arr = {1, 2, 3};\n    return arr;\n}<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u8fd9\u79cd\u65b9\u6cd5\u7b80\u5355\u76f4\u63a5\uff0c\u4f46\u662f\u65e0\u6cd5\u63a7\u5236\u6570\u7ec4\u7684\u7c7b\u578b\u3002<\/p>\n
\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n
2. \u4f7f\u7528\u6cdb\u578b\u65b9\u6cd5<\/strong><\/p>\n
public <T> T[] getArray(T[] arr) {\n    return arr;\n}<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u6cdb\u578b\u65b9\u6cd5\u53ef\u4ee5\u6307\u5b9a\u6570\u7ec4\u7684\u7c7b\u578b\uff0c\u4f46\u662f\u9700\u8981\u5728\u8c03\u7528\u65b9\u6cd5\u65f6\u660e\u786e\u6307\u5b9a\u7c7b\u578b\u53c2\u6570\u3002<\/p>\n
3. \u521b\u5efa\u4e00\u4e2a Array \u7c7b\u578b\u7684\u5bf9\u8c61<\/strong><\/p>\n
public Object[] getArray() {\n    Object[] arr = new Object[]{1, 2.3, \"Hello\"};\n    return arr;\n}<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u8fd9\u79cd\u65b9\u6cd5\u53ef\u4ee5\u8fd4\u56de\u4e00\u4e2a\u5305\u542b\u5404\u79cd\u7c7b\u578b\u5143\u7d20\u7684\u6570\u7ec4\uff0c\u4f46\u662f\u9700\u8981\u8fdb\u884c\u7c7b\u578b\u8f6c\u6362\u624d\u80fd\u4f7f\u7528\u6570\u7ec4\u5143\u7d20\u3002<\/p>\n
4. \u4f7f\u7528 Arrays.copyOf() \u65b9\u6cd5<\/strong><\/p>\n
public int[] getArray() {\n    int[] originalArray = {1, 2, 3};\n    int[] newArray = Arrays.copyOf(originalArray, originalArray.length);\n    return newArray;\n}<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
Arrays.copyOf() \u65b9\u6cd5\u53ef\u4ee5\u521b\u5efa\u4e00\u4e2a\u539f\u59cb\u6570\u7ec4\u7684\u526f\u672c\uff0c\u5e76\u6307\u5b9a\u526f\u672c\u7684\u957f\u5ea6\u3002<\/p>\n
\u8fd4\u56de\u6570\u7ec4\u7684\u65b9\u6cd5\u9009\u62e9\u53d6\u51b3\u4e8e\u5177\u4f53\u7684\u573a\u666f\u548c\u8981\u6c42\u3002\u5bf9\u4e8e\u9700\u8981\u7279\u5b9a\u7c7b\u578b\u6570\u7ec4\u6216\u9700\u8981\u521b\u5efa\u4e00\u4e2a\u526f\u672c\u7684\u60c5\u51b5\u4e0b\uff0c\u63a8\u8350\u4f7f\u7528\u6cdb\u578b\u65b9\u6cd5\u6216 Arrays.copyOf() \u65b9\u6cd5\u3002<\/p>\n
\u4ee5\u4e0a\u5c31\u662fjava \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":"
\u5728 java \u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528\u76f4\u63a5\u8fd4\u56de\u6570\u7ec4\u3001\u6cdb\u578b\u65b9\u6cd5\u3001\u521b\u5efa array \u5bf9\u8c61\u6216 arrays.copyof() \u65b9\u6cd5\u6765\u8fd4\u56de\u4e00\u4e2a\u6570\u7ec4\u3002\u5177\u4f53\u9009\u62e9\u53d6\u51b3\u4e8e\u6570\u7ec4\u7c7b\u578b\u548c\u573a\u666f\u8981\u6c42\u3002 \u5982\u4f55\u7528 Java \u8fd4\u56de\u4e00\u4e2a\u6570\u7ec4 \u5728 Java \u4e2d\uff0c\u6709\u51e0\u79cd\u65b9\u6cd5\u53ef\u4ee5\u8fd4\u56de\u4e00\u4e2a\u6570\u7ec4\uff1a 1. \u76f4\u63a5\u8fd4\u56de\u6570\u7ec4 public int[] getIntArray() { int[] arr = {1, 2, 3}; return arr; } \u767b\u5f55\u540e\u590d\u5236 \u8fd9\u79cd\u65b9\u6cd5\u7b80\u5355\u76f4\u63a5\uff0c\u4f46\u662f\u65e0\u6cd5\u63a7\u5236\u6570\u7ec4\u7684\u7c7b\u578b\u3002 \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b 2. \u4f7f\u7528\u6cdb\u578b\u65b9\u6cd5 public <T> T[] getArray(T[] arr) { return arr; } \u767b\u5f55\u540e\u590d\u5236 \u6cdb\u578b\u65b9\u6cd5\u53ef\u4ee5\u6307\u5b9a\u6570\u7ec4\u7684\u7c7b\u578b\uff0c\u4f46\u662f\u9700\u8981\u5728\u8c03\u7528\u65b9\u6cd5\u65f6\u660e\u786e\u6307\u5b9a\u7c7b\u578b\u53c2\u6570\u3002 3. \u521b\u5efa\u4e00\u4e2a Array \u7c7b\u578b\u7684\u5bf9\u8c61 public Object[] getArray() { Object[] arr = […]<\/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-34815","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/34815","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=34815"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/34815\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=34815"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=34815"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=34815"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}