{"id":31409,"date":"2023-07-14T06:20:16","date_gmt":"2023-02-15T22:58:28","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/java-%e5%ad%a6%e4%b9%a0%e7%ac%94%e8%ae%b01\/"},"modified":"2025-08-12T23:53:29","modified_gmt":"2025-08-12T15:53:29","slug":"java-%e5%ad%a6%e4%b9%a0%e7%ac%94%e8%ae%b01","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/java-%e5%ad%a6%e4%b9%a0%e7%ac%94%e8%ae%b01\/","title":{"rendered":"Java \u5b66\u4e60\u7b14\u8bb01"},"content":{"rendered":"

Java\u7a0b\u5e8f\u7684\u7ed3\u6784<\/h2>\n

Java\u7a0b\u5e8f\u7684\u7ed3\u6784\u5982\u4e0b\uff1a<\/p>\n

\u5728\u5927\u62ec\u53f7\u4e2d\u6709\u4e00\u4e2a\u7c7b\uff0c\u5728\u7c7b\u4e2d\u653e\u7f6e\u5b57\u6bb5\u3001\u6784\u9020\u51fd\u6570\u548c\u65b9\u6cd5\u3002<\/p>\n

Java \u7684\u6570\u636e\u7c7b\u578b<\/h2>\n

Java\u7684\u6570\u636e\u7c7b\u578b\u5206\u4e3a\u4e24\u79cd\u5927\u7c7b\u3002<\/p>\n

\u57fa\u672c\u6570\u636e\u7c7b\u578b (\u539f\u59cb\u7c7b\u578b)<\/h2>\n

\u6574\u6570\u7c7b\u578b:<\/p>\n

byte\uff1a8\u4f4d\u6709\u7b26\u53f7\u6574\u6570\uff08\u8303\u56f4\u4ece-128\u5230127\uff09
\nshort\uff1a16\u4f4d\u6709\u7b26\u53f7\u6574\u6570\uff08\u8303\u56f4\u4ece-32,768\u523032,767\uff09
\nint\uff1a32\u4f4d\u6709\u7b26\u53f7\u6574\u6570\uff08\u8303\u56f4\u4ece-2,147,483,648\u52302,147,483,647\uff09
\nlong\uff1a64\u4f4d\u6709\u7b26\u53f7\u6574\u6570\uff08\u8303\u56f4\u4ece-9,223,372,036,854,775,808\u52309,223,372,036,854,775,807\uff09
\n\u6d6e\u70b9\u6570\u7c7b\u578b\uff1a<\/p>\n

\u5e03\u5c14\u578b<\/p>\n

\u5b57\u7b26\u4e32\u7c7b\u578b\uff1a\u62e5\u6709\u591a\u4e2a\u5b57\u7b26\u7ec4\u6210\u7684\u6570\u636e\u7c7b\u578b\u3002<\/p>\n

\u5b57\u7b26\uff1a16\u4f4dUnicode\u5b57\u7b26\uff08\u4f8b\u5982\uff1a’A’\u3001’b’\u3001’1’\u3001’@’\u7b49\uff09<\/p>\n

\u7c7b\uff08\u5f15\u7528\u7c7b\u578b\uff09<\/h2>\n

\u7c7b\uff08class\uff09\u7c7b\u578b\u662f\u7528\u6765\u5b58\u50a8\u6765\u6e90\u4e8eJava\u7c7b\u548c\u63a5\u53e3\u7684\u5bf9\u8c61\u5f15\u7528\u3002\u5176\u4e2d\u5305\u62ec\u8bb8\u591a\u5185\u7f6e\u7c7b\u3002\u4f8b\u5982\uff0cString\u7c7b\u7528\u4e8e\u8868\u793a\u6587\u672c\u5b57\u7b26\u4e32\uff0c\u4f46\u8fd8\u5b58\u5728\u8bb8\u591a\u5176\u4ed6\u7c7b\u3002<\/p>\n

\u5728Java\u4e2d\uff0c\u57fa\u672c\u6570\u636e\u7c7b\u578b\u5b58\u50a8\u7684\u662f\u503c\u672c\u8eab\uff0c\u800c\u7c7b\u7c7b\u578b\u5b58\u50a8\u7684\u662f\u5bf9\u8c61\u7684\u5f15\u7528\u3002\u8fd9\u6837\u53ef\u4ee5\u8868\u793a\u66f4\u590d\u6742\u7684\u6570\u636e\u7ed3\u6784\u3002<\/p>\n

Java\u4e2d\u7684\u6570\u636e\u7c7b\u578b\u5bf9\u4e8e\u6784\u5efa\u7a0b\u5e8f\u975e\u5e38\u91cd\u8981\uff0c\u9009\u62e9\u9002\u5f53\u7684\u6570\u636e\u7c7b\u578b\u53ef\u80fd\u4f1a\u5f71\u54cd\u7a0b\u5e8f\u7684\u6027\u80fd\u548c\u884c\u4e3a\u3002\u539f\u59cb\u6570\u636e\u7c7b\u578b\u7528\u4e8e\u5b58\u50a8\u57fa\u672c\u6570\u636e\uff0c\u800c\u5f15\u7528\u7c7b\u578b\u7528\u4e8e\u5904\u7406\u66f4\u9ad8\u7ea7\u529f\u80fd\u548c\u6570\u636e\u3002<\/p>\n

\u53c2\u8003\u56fe\u50cf<\/h3>\n

1. \u521b\u5efa\u5bf9\u8c61<\/p>\n

\u5f53\u58f0\u660e\u4e00\u4e2a\u5f15\u7528\u7c7b\u578b\u7684\u53d8\u91cf\u65f6\uff0c\u8be5\u53d8\u91cf\u5c1a\u672a\u6307\u5411\u4efb\u4f55\u5bf9\u8c61\u3002\u5f15\u7528\u7c7b\u578b\u7684\u53d8\u91cf\u53ef\u4ee5\u7406\u89e3\u4e3a\u5177\u6709\u5b58\u50a8\u5bf9\u8c61\u6240\u5728\u5185\u5b58\u4f4d\u7f6e\uff08\u5730\u5740\uff09\u7684\u69fd\u4f4d\u3002<\/p>\n

2. \u5bf9\u8c61\u7684\u5b9e\u4f8b\u5316\u3002<\/p>\n

\u5f53Java\u5b9e\u9645\u521b\u5efa\uff08\u5b9e\u4f8b\u5316\uff09\u5bf9\u8c61\u65f6\uff0c\u5b83\u4f1a\u5206\u914d\u65b0\u7684\u5185\u5b58\u7a7a\u95f4\u5e76\u5b58\u50a8\u5bf9\u8c61\u7684\u6570\u636e\u3002
\n\u5730\u5740\u5206\u914d\uff1a
\n\u5f53\u5bf9\u8c61\u88ab\u5b9e\u4f8b\u5316\u65f6\uff0cJava\u865a\u62df\u673a\uff08JVM\uff09\u4f1a\u4e3a\u8be5\u5bf9\u8c61\u5206\u914d\u4e00\u4e2a\u552f\u4e00\u7684\u5730\u5740\uff0c\u8868\u793a\u8be5\u5bf9\u8c61\u5728\u5185\u5b58\u4e2d\u7684\u4f4d\u7f6e\u3002\u8fd9\u4e2a\u5730\u5740\u901a\u5e38\u7528\u5341\u516d\u8fdb\u5236\u8868\u793a\u7684\u552f\u4e00\u6570\u503c\u6765\u8868\u8fbe\u3002<\/p>\n

3. \u53c2\u8003\u5206\u914d\uff1a<\/p>\n

\u5b9e\u4f8b\u5316\u7684\u5bf9\u8c61\u5730\u5740\u4f1a\u88ab\u5206\u914d\u7ed9\u5f15\u7528\u7c7b\u578b\u7684\u53d8\u91cf\u3002\u6b64\u65f6\uff0c\u5f15\u7528\u7c7b\u578b\u7684\u53d8\u91cf\u4e2d\u50a8\u5b58\u7684\u5e76\u4e0d\u662f\u5bf9\u8c61\u672c\u8eab\uff0c\u800c\u662f\u5bf9\u8c61\u5728\u5185\u5b58\u4e2d\u7684\u5730\u5740\uff08\u5f15\u7528\uff09\u3002<\/p>\n

4. \u8bbf\u95ee\u5bf9\u8c61\uff1a<\/p>\n

\u5f53\u901a\u8fc7\u5f15\u7528\u7c7b\u578b\u7684\u53d8\u91cf\u8bbf\u95ee\u5bf9\u8c61\u65f6\uff0c\u4f1a\u901a\u8fc7\u8ffd\u8e2a\u53d8\u91cf\u4e2d\u5b58\u50a8\u7684\u5730\u5740\u6765\u8bbf\u95ee\u5b9e\u9645\u5bf9\u8c61\u7684\u5185\u5b58\u7a7a\u95f4\u3002\u8fd9\u4e2a\u8fc7\u7a0b\u662f\u8bbf\u95ee\u5bf9\u8c61\u5185\u5bb9\u548c\u6570\u636e\u7684\u4e00\u79cd\u65b9\u5f0f\u3002\u5f15\u7528\u4f20\u9012\u3002<\/p>\n

\u5f53\u5c06\u5f15\u7528\u7c7b\u578b\u7684\u53d8\u91cf\u8d4b\u503c\u7ed9\u53e6\u4e00\u4e2a\u53d8\u91cf\u65f6\uff0c\u53ea\u4f1a\u4f20\u9012\u5730\u5740\uff08\u5f15\u7528\uff09\uff0c\u800c\u4e0d\u4f1a\u590d\u5236\u5bf9\u8c61\u672c\u8eab\u3002\u4e5f\u5c31\u662f\u8bf4\uff0c\u4e24\u4e2a\u53d8\u91cf\u4f1a\u6307\u5411\u540c\u4e00\u4e2a\u5bf9\u8c61\u3002<\/p>\n

\u53c2\u8003\u4e66\u7c4d – sh\u016b j\u00ed<\/h3>\n

\u30fbJava\u5165\u95e8\u7b2c3\u7248\uff0c\u4e00\u76ee\u4e86\u7136
\n\u30fbOracle (https:\/\/docs.oracle.com\/javase\/jp\/8\/docs\/api\/java\/lang\/String.html)<\/p>\n","protected":false},"excerpt":{"rendered":"

Java\u7a0b\u5e8f\u7684\u7ed3\u6784 Java\u7a0b\u5e8f\u7684\u7ed3\u6784\u5982\u4e0b\uff1a \u5728\u5927\u62ec\u53f7\u4e2d\u6709\u4e00\u4e2a\u7c7b\uff0c\u5728\u7c7b\u4e2d\u653e\u7f6e\u5b57\u6bb5\u3001\u6784\u9020\u51fd\u6570\u548c\u65b9\u6cd5\u3002 Java […]<\/p>\n","protected":false},"author":5,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[227],"class_list":["post-31409","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-227"],"yoast_head":"\nJava \u5b66\u4e60\u7b14\u8bb01 - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" content=\"\u5173\u4e8eJava \u5b66\u4e60\u7b14\u8bb01\u7684\u6280\u672f\u6587\u7ae0\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.silicloud.com\/zh\/blog\/java-\u5b66\u4e60\u7b14\u8bb01\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Java \u5b66\u4e60\u7b14\u8bb01\" \/>\n<meta property=\"og:description\" content=\"\u5173\u4e8eJava \u5b66\u4e60\u7b14\u8bb01\u7684\u6280\u672f\u6587\u7ae0\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/zh\/blog\/java-\u5b66\u4e60\u7b14\u8bb01\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - 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