{"id":66921,"date":"2025-05-03T12:48:15","date_gmt":"2025-05-03T04:48:15","guid":{"rendered":"https:\/\/fwq.ai\/blog\/66921\/"},"modified":"2025-05-03T12:48:15","modified_gmt":"2025-05-03T04:48:15","slug":"java%e6%80%8e%e4%b9%88%e6%8a%8a%e4%b8%80%e7%bb%b4%e6%95%b0%e7%bb%84%e6%8b%bc%e6%88%90%e5%ad%97%e7%ac%a6%e4%b8%b2-2","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/66921\/","title":{"rendered":"java\u600e\u4e48\u628a\u4e00\u7ef4\u6570\u7ec4\u62fc\u6210\u5b57\u7b26\u4e32"},"content":{"rendered":"<blockquote><p>\n  \u4f7f\u7528 java \u5c06\u4e00\u7ef4\u6570\u7ec4\u62fc\u63a5\u6210\u5b57\u7b26\u4e32\u53ef\u4ee5\u4f7f\u7528 stringbuilder \u7c7b\uff0c\u4f9d\u6b21\u8ffd\u52a0\u6570\u7ec4\u5143\u7d20\u4f7f\u7528 append() \u65b9\u6cd5\uff0c\u6700\u540e\u7528 tostring() \u65b9\u6cd5\u83b7\u53d6\u62fc\u63a5\u540e\u7684\u5b57\u7b26\u4e32\u3002\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202411\/17\/2024111719065897451.jpg\" class=\"aligncenter\" title=\"java\u600e\u4e48\u628a\u4e00\u7ef4\u6570\u7ec4\u62fc\u6210\u5b57\u7b26\u4e32\u63d2\u56fe\" alt=\"java\u600e\u4e48\u628a\u4e00\u7ef4\u6570\u7ec4\u62fc\u6210\u5b57\u7b26\u4e32\u63d2\u56fe\" \/><\/p>\n<p><strong>\u5982\u4f55\u4f7f\u7528 Java \u5c06\u4e00\u7ef4\u6570\u7ec4\u62fc\u63a5\u6210\u5b57\u7b26\u4e32<\/strong><\/p>\n<p><strong>\u56de\u7b54\uff1a<\/strong><\/p>\n<p>\u4f7f\u7528 Java \u62fc\u63a5\u4e00\u7ef4\u6570\u7ec4\u5143\u7d20\u7684\u5b57\u7b26\u4e32\uff0c\u53ef\u4ee5\u4f7f\u7528 <strong>StringBuilder<\/strong> \u7c7b\u3002<\/p>\n<p><strong>\u8be6\u7ec6\u8bf4\u660e\uff1a<\/strong><\/p>\n<p><span>\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n<ol>\n<li>\n<p><strong>\u521b\u5efa StringBuilder \u5bf9\u8c61<\/strong><\/p>\n<pre>StringBuilder sb = new StringBuilder();<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/li>\n<li>\n<p><strong>\u4f9d\u6b21\u8ffd\u52a0\u6570\u7ec4\u5143\u7d20<\/strong><\/p>\n<p>\u4f7f\u7528 append() \u65b9\u6cd5\u4f9d\u6b21\u5c06\u6570\u7ec4\u5143\u7d20\u8ffd\u52a0\u5230 StringBuilder \u5bf9\u8c61\u4e2d\u3002<\/p>\n<pre>int[] arr = {1, 2, 3, 4};\nfor (int i = 0; i &lt; arr.length; i++) {\n    sb.append(arr[i]);\n}<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/li>\n<li>\n<p><strong>\u83b7\u53d6\u62fc\u63a5\u540e\u7684\u5b57\u7b26\u4e32<\/strong><\/p>\n<p>\u4f7f\u7528 toString() \u65b9\u6cd5\u4ece StringBuilder \u5bf9\u8c61\u4e2d\u83b7\u53d6\u62fc\u63a5\u5b8c\u6210\u7684\u5b57\u7b26\u4e32\u3002<\/p>\n<pre>String result = sb.toString();<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/li>\n<\/ol>\n<p><strong>\u793a\u4f8b\uff1a<\/strong><\/p>\n<pre>int[] arr = {1, 2, 3, 4};\n\nStringBuilder sb = new StringBuilder();\n\nfor (int i = 0; i &lt; arr.length; i++) {\n    sb.append(arr[i]);\n}\n\nString result = sb.toString();\n\nSystem.out.println(\"\u62fc\u63a5\u540e\u7684\u5b57\u7b26\u4e32\uff1a\" + result);<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u8f93\u51fa\uff1a<\/p>\n<pre>\u62fc\u63a5\u540e\u7684\u5b57\u7b26\u4e32\uff1a1234<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u4ee5\u4e0a\u5c31\u662fjava\u600e\u4e48\u628a\u4e00\u7ef4\u6570\u7ec4\u62fc\u6210\u5b57\u7b26\u4e32\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>\u4f7f\u7528 java \u5c06\u4e00\u7ef4\u6570\u7ec4\u62fc\u63a5\u6210\u5b57\u7b26\u4e32\u53ef\u4ee5\u4f7f\u7528 stringbuilder \u7c7b\uff0c\u4f9d\u6b21\u8ffd\u52a0\u6570\u7ec4\u5143\u7d20\u4f7f\u7528 append() \u65b9\u6cd5\uff0c\u6700\u540e\u7528 tostring() \u65b9\u6cd5\u83b7\u53d6\u62fc\u63a5\u540e\u7684\u5b57\u7b26\u4e32\u3002 \u5982\u4f55\u4f7f\u7528 Java \u5c06\u4e00\u7ef4\u6570\u7ec4\u62fc\u63a5\u6210\u5b57\u7b26\u4e32 \u56de\u7b54\uff1a \u4f7f\u7528 Java \u62fc\u63a5\u4e00\u7ef4\u6570\u7ec4\u5143\u7d20\u7684\u5b57\u7b26\u4e32\uff0c\u53ef\u4ee5\u4f7f\u7528 StringBuilder \u7c7b\u3002 \u8be6\u7ec6\u8bf4\u660e\uff1a \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b \u521b\u5efa StringBuilder \u5bf9\u8c61 StringBuilder sb = new StringBuilder(); 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