{"id":66681,"date":"2025-05-03T08:36:38","date_gmt":"2025-05-03T00:36:38","guid":{"rendered":"https:\/\/fwq.ai\/blog\/66681\/"},"modified":"2025-05-03T08:36:38","modified_gmt":"2025-05-03T00:36:38","slug":"java%e4%b8%ad%e5%ad%97%e8%8a%82%e6%95%b0%e7%bb%84%e6%80%8e%e4%b9%88%e8%b5%8b%e5%80%bc-2","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/66681\/","title":{"rendered":"java\u4e2d\u5b57\u8282\u6570\u7ec4\u600e\u4e48\u8d4b\u503c"},"content":{"rendered":"<blockquote><p>\n  java \u5b57\u8282\u6570\u7ec4\u53ef\u901a\u8fc7\u4ee5\u4e0b\u65b9\u5f0f\u8d4b\u503c\uff1a1. \u6570\u7ec4\u521d\u59cb\u5316\u8bed\u6cd5\uff1b2. system.arraycopy() \u65b9\u6cd5\uff1b3. \u9010\u4e2a\u8d4b\u503c\uff1b4. \u4f7f\u7528\u5e93\u51fd\u6570\u3002\u786e\u4fdd\u76ee\u6807\u6570\u7ec4\u6709\u8db3\u591f\u7a7a\u95f4\uff0c\u907f\u514d\u6570\u7ec4\u91cd\u53e0\uff0c\u6ce8\u610f\u5b57\u8282\u6570\u7ec4\u4e0d\u53ef\u53d8\u6027\u3002\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202411\/16\/2024111613101179441.jpg\" class=\"aligncenter\" title=\"java\u4e2d\u5b57\u8282\u6570\u7ec4\u600e\u4e48\u8d4b\u503c\u63d2\u56fe\" alt=\"java\u4e2d\u5b57\u8282\u6570\u7ec4\u600e\u4e48\u8d4b\u503c\u63d2\u56fe\" \/><\/p>\n<p><strong>Java \u4e2d\u5b57\u8282\u6570\u7ec4\u8d4b\u503c<\/strong><\/p>\n<p><strong>\u5f00\u95e8\u89c1\u5c71\uff1a<\/strong><\/p>\n<p>Java \u4e2d\u5b57\u8282\u6570\u7ec4\u53ef\u4ee5\u901a\u8fc7\u4f7f\u7528\u6570\u7ec4\u521d\u59cb\u5316\u8bed\u6cd5\u6216 System.arraycopy() \u65b9\u6cd5\u6765\u8d4b\u503c\u3002<\/p>\n<p><strong>\u8be6\u7ec6\u5c55\u5f00\uff1a<\/strong><\/p>\n<p><span>\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n<p><strong>\u6570\u7ec4\u521d\u59cb\u5316\u8bed\u6cd5\uff1a<\/strong><\/p>\n<ul>\n<li>\u4f7f\u7528\u5927\u62ec\u53f7 {} \u62ec\u8d77\u5b57\u8282\u503c\uff0c\u5e76\u7528\u9017\u53f7\u5206\u9694\u3002<\/li>\n<li>\n<p>\u4f8b\u5982\uff1a<\/p>\n<pre>byte[] data = {1, 2, 3, 4, 5};<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/li>\n<\/ul>\n<p><strong>System.arraycopy() \u65b9\u6cd5\uff1a<\/strong><\/p>\n<ul>\n<li>\n<p>\u8be5\u65b9\u6cd5\u63a5\u53d7\u4ee5\u4e0b\u53c2\u6570\uff1a<\/p>\n<ul>\n<li>\u6e90\u6570\u7ec4<\/li>\n<li>\u6e90\u6570\u7ec4\u4e2d\u7684\u8d77\u59cb\u7d22\u5f15<\/li>\n<li>\u76ee\u6807\u6570\u7ec4<\/li>\n<li>\u76ee\u6807\u6570\u7ec4\u4e2d\u7684\u8d77\u59cb\u7d22\u5f15<\/li>\n<li>\u8981\u590d\u5236\u7684\u5143\u7d20\u6570\u91cf<\/li>\n<\/ul>\n<\/li>\n<li>\n<p>\u8bed\u6cd5\uff1a<\/p>\n<pre>System.arraycopy(srcArray, srcPos, destArray, destPos, length);<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/li>\n<li>\n<p>\u4f8b\u5982\uff1a<\/p>\n<pre>byte[] srcArray = {1, 2, 3, 4, 5};\nbyte[] destArray = new byte[5];\nSystem.arraycopy(srcArray, 0, destArray, 0, 5);<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/li>\n<\/ul>\n<p><strong>\u5176\u4ed6\u8d4b\u503c\u65b9\u5f0f\uff1a<\/strong><\/p>\n<ul>\n<li> <strong>\u9010\u4e2a\u8d4b\u503c\uff1a<\/strong>\u4f7f\u7528 byte \u7c7b\u578b\u53d8\u91cf\u4e3a\u5b57\u8282\u6570\u7ec4\u4e2d\u7684\u6bcf\u4e2a\u5143\u7d20\u8d4b\u503c\u3002<\/li>\n<li> <strong>\u4f7f\u7528\u5e93\u51fd\u6570\uff1a<\/strong>\u53ef\u4ee5\u4f7f\u7528 Arrays.fill() \u6216 Arrays.copyOf() \u7b49\u5e93\u51fd\u6570\u6765\u8d4b\u503c\u3002<\/li>\n<\/ul>\n<p><strong>\u6ce8\u610f\u4e8b\u9879\uff1a<\/strong><\/p>\n<ul>\n<li>\u786e\u4fdd\u76ee\u6807\u6570\u7ec4\u6709\u8db3\u591f\u7684\u7a7a\u95f4\u5bb9\u7eb3\u8981\u590d\u5236\u7684\u5143\u7d20\u3002<\/li>\n<li>\u5982\u679c\u6e90\u6570\u7ec4\u548c\u76ee\u6807\u6570\u7ec4\u91cd\u53e0\uff0cSystem.arraycopy() \u65b9\u6cd5\u53ef\u80fd\u4f1a\u5bfc\u81f4\u610f\u5916\u7ed3\u679c\u3002<\/li>\n<li>Byte \u6570\u7ec4\u662f\u4e0d\u53ef\u53d8\u7684\uff0c\u56e0\u6b64\u8d4b\u503c\u540e\u65e0\u6cd5\u66f4\u6539\u5176\u5185\u5bb9\u3002<\/li>\n<\/ul>\n<p>\u4ee5\u4e0a\u5c31\u662fjava\u4e2d\u5b57\u8282\u6570\u7ec4\u600e\u4e48\u8d4b\u503c\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8IDCBABY\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>java \u5b57\u8282\u6570\u7ec4\u53ef\u901a\u8fc7\u4ee5\u4e0b\u65b9\u5f0f\u8d4b\u503c\uff1a1. \u6570\u7ec4\u521d\u59cb\u5316\u8bed\u6cd5\uff1b2. system.arraycopy() \u65b9\u6cd5\uff1b3. \u9010\u4e2a\u8d4b\u503c\uff1b4. \u4f7f\u7528\u5e93\u51fd\u6570\u3002\u786e\u4fdd\u76ee\u6807\u6570\u7ec4\u6709\u8db3\u591f\u7a7a\u95f4\uff0c\u907f\u514d\u6570\u7ec4\u91cd\u53e0\uff0c\u6ce8\u610f\u5b57\u8282\u6570\u7ec4\u4e0d\u53ef\u53d8\u6027\u3002 Java \u4e2d\u5b57\u8282\u6570\u7ec4\u8d4b\u503c \u5f00\u95e8\u89c1\u5c71\uff1a Java \u4e2d\u5b57\u8282\u6570\u7ec4\u53ef\u4ee5\u901a\u8fc7\u4f7f\u7528\u6570\u7ec4\u521d\u59cb\u5316\u8bed\u6cd5\u6216 System.arraycopy() \u65b9\u6cd5\u6765\u8d4b\u503c\u3002 \u8be6\u7ec6\u5c55\u5f00\uff1a \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b \u6570\u7ec4\u521d\u59cb\u5316\u8bed\u6cd5\uff1a \u4f7f\u7528\u5927\u62ec\u53f7 {} \u62ec\u8d77\u5b57\u8282\u503c\uff0c\u5e76\u7528\u9017\u53f7\u5206\u9694\u3002 \u4f8b\u5982\uff1a byte[] data = {1, 2, 3, 4, 5}; \u767b\u5f55\u540e\u590d\u5236 System.arraycopy() \u65b9\u6cd5\uff1a \u8be5\u65b9\u6cd5\u63a5\u53d7\u4ee5\u4e0b\u53c2\u6570\uff1a \u6e90\u6570\u7ec4 \u6e90\u6570\u7ec4\u4e2d\u7684\u8d77\u59cb\u7d22\u5f15 \u76ee\u6807\u6570\u7ec4 \u76ee\u6807\u6570\u7ec4\u4e2d\u7684\u8d77\u59cb\u7d22\u5f15 \u8981\u590d\u5236\u7684\u5143\u7d20\u6570\u91cf \u8bed\u6cd5\uff1a System.arraycopy(srcArray, srcPos, destArray, destPos, length); \u767b\u5f55\u540e\u590d\u5236 \u4f8b\u5982\uff1a byte[] srcArray = {1, 2, 3, 4, 5}; byte[] [&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-66681","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/66681","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=66681"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/66681\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=66681"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=66681"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=66681"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}