{"id":37299,"date":"2024-11-26T14:12:18","date_gmt":"2024-11-26T06:12:18","guid":{"rendered":"https:\/\/fwq.ai\/blog\/37299\/"},"modified":"2024-11-26T14:12:18","modified_gmt":"2024-11-26T06:12:18","slug":"java%e6%80%8e%e4%b9%88%e7%bb%99byte%e6%95%b0%e7%bb%84%e8%b5%8b%e5%80%bc","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/37299\/","title":{"rendered":"java\u600e\u4e48\u7ed9byte\u6570\u7ec4\u8d4b\u503c"},"content":{"rendered":"<blockquote><p>\n  java \u4e2d\u4e3a\u5b57\u8282\u6570\u7ec4\u8d4b\u503c\u7684\u65b9\u6cd5\u6709 6 \u79cd\uff1a\u76f4\u63a5\u8d4b\u503c\u4f7f\u7528 arrays.fill() \u65b9\u6cd5\u4ece\u53e6\u4e00\u4e2a\u6570\u7ec4\u590d\u5236\u4f7f\u7528\u6d41\u4ece\u5b57\u7b26\u4e32\u8f6c\u6362\u4f7f\u7528\u7f13\u51b2\u533a\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202411\/13\/2024111303392544726.jpg\" class=\"aligncenter\" title=\"java\u600e\u4e48\u7ed9byte\u6570\u7ec4\u8d4b\u503c\u63d2\u56fe\" alt=\"java\u600e\u4e48\u7ed9byte\u6570\u7ec4\u8d4b\u503c\u63d2\u56fe\" \/><\/p>\n<p><strong>Java \u4e2d\u4e3a\u5b57\u8282\u6570\u7ec4\u8d4b\u503c\u7684\u65b9\u6cd5<\/strong><\/p>\n<p>\u5728 Java \u4e2d\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u65b9\u6cd5\u4e3a\u5b57\u8282\u6570\u7ec4\u8d4b\u503c\uff1a<\/p>\n<p><strong>1. \u76f4\u63a5\u8d4b\u503c<\/strong><\/p>\n<pre>byte[] byteArray = {1, 2, 3, 4, 5};<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>2. \u4f7f\u7528 Arrays.fill() \u65b9\u6cd5<\/strong><\/p>\n<p><span>\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n<pre>byte[] byteArray = new byte[5];\nArrays.fill(byteArray, (byte) 10); \/\/ \u7528 10 \u586b\u5145\u6574\u4e2a\u6570\u7ec4<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>3. \u4ece\u53e6\u4e00\u4e2a\u6570\u7ec4\u590d\u5236<\/strong><\/p>\n<pre>byte[] byteArray1 = {1, 2, 3, 4, 5};\nbyte[] byteArray2 = new byte[byteArray1.length];\nSystem.arraycopy(byteArray1, 0, byteArray2, 0, byteArray1.length);<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>4. \u4f7f\u7528\u6d41<\/strong><\/p>\n<pre>ByteArrayInputStream bais = new ByteArrayInputStream(new byte[]{1, 2, 3, 4, 5});\nbyte[] byteArray = bais.readAllBytes();<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>5. \u4ece\u5b57\u7b26\u4e32\u8f6c\u6362<\/strong><\/p>\n<pre>String str = \"Hello World\";\nbyte[] byteArray = str.getBytes(); \/\/ \u4f7f\u7528\u9ed8\u8ba4\u5b57\u7b26\u96c6\nbyte[] byteArrayWithCharset = str.getBytes(StandardCharsets.UTF_8); \/\/ \u4f7f\u7528\u6307\u5b9a\u5b57\u7b26\u96c6<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>6. \u4f7f\u7528\u7f13\u51b2\u533a<\/strong><\/p>\n<pre>ByteBuffer byteBuffer = ByteBuffer.allocate(5);\nbyteBuffer.put(1);\nbyteBuffer.put(2);\nbyteBuffer.put(3);\nbyteBuffer.put(4);\nbyteBuffer.put(5);\nbyte[] byteArray = byteBuffer.array();<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u4ee5\u4e0a\u5c31\u662fjava\u600e\u4e48\u7ed9byte\u6570\u7ec4\u8d4b\u503c\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>java \u4e2d\u4e3a\u5b57\u8282\u6570\u7ec4\u8d4b\u503c\u7684\u65b9\u6cd5\u6709 6 \u79cd\uff1a\u76f4\u63a5\u8d4b\u503c\u4f7f\u7528 arrays.fill() \u65b9\u6cd5\u4ece\u53e6\u4e00\u4e2a\u6570\u7ec4\u590d\u5236\u4f7f\u7528\u6d41\u4ece\u5b57\u7b26\u4e32\u8f6c\u6362\u4f7f\u7528\u7f13\u51b2\u533a Java \u4e2d\u4e3a\u5b57\u8282\u6570\u7ec4\u8d4b\u503c\u7684\u65b9\u6cd5 \u5728 Java \u4e2d\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u65b9\u6cd5\u4e3a\u5b57\u8282\u6570\u7ec4\u8d4b\u503c\uff1a 1. \u76f4\u63a5\u8d4b\u503c byte[] byteArray = {1, 2, 3, 4, 5}; \u767b\u5f55\u540e\u590d\u5236 2. \u4f7f\u7528 Arrays.fill() \u65b9\u6cd5 \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b byte[] byteArray = new byte[5]; Arrays.fill(byteArray, (byte) 10); \/\/ \u7528 10 \u586b\u5145\u6574\u4e2a\u6570\u7ec4 \u767b\u5f55\u540e\u590d\u5236 3. \u4ece\u53e6\u4e00\u4e2a\u6570\u7ec4\u590d\u5236 byte[] byteArray1 = {1, 2, 3, 4, 5}; byte[] byteArray2 = new byte[byteArray1.length]; [&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-37299","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/37299","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=37299"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/37299\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=37299"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=37299"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=37299"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}