{"id":31133,"date":"2023-04-17T16:44:29","date_gmt":"2023-09-21T08:18:22","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e3%80%90java%e3%80%91%e5%a4%a7%e6%95%b0%e7%b1%bbbigdecimal\/"},"modified":"2025-08-12T22:29:41","modified_gmt":"2025-08-12T14:29:41","slug":"%e3%80%90java%e3%80%91%e5%a4%a7%e6%95%b0%e7%b1%bbbigdecimal","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e3%80%90java%e3%80%91%e5%a4%a7%e6%95%b0%e7%b1%bbbigdecimal\/","title":{"rendered":"\u3010Java\u3011\u5927\u6570\u7c7bBigDecimal"},"content":{"rendered":"<h1>BigDecimal\u662f\u4e00\u4e2aJava\u7c7b\uff0c\u7528\u4e8e\u9ad8\u7cbe\u5ea6\u7684\u5341\u8fdb\u5236\u8ba1\u7b97\u3002<\/h1>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u8aa4\u5dee\u304c\u51fa\u306a\u3044\u3088\u3046\u306b\u6b63\u78ba\u306b\u8a08\u7b97\u3059\u308b\u305f\u3081\u306e\u30af\u30e9\u30b9<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u56db\u6368\u4e94\u5165\u306a\u3069\u306e\u4e38\u3081\u51e6\u7406\u304c\u3067\u304d\u308b<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\u6841\u6570\u306e\u6307\u5b9a\u304c\u3067\u304d\u308b<\/ul>\n<h2>\u5982\u679c\u4e0d\u4f7f\u7528BigDecimal\uff0c\u4f1a\u51fa\u73b0\u4ec0\u4e48\u6837\u7684\u8bef\u5dee\uff1f<\/h2>\n<pre class=\"post-pre\"><code><span class=\"kn\">import<\/span> <span class=\"nn\">java.math.BigDecimal<\/span><span class=\"o\">;<\/span>\r\n\r\n<span class=\"kd\">public<\/span> <span class=\"kd\">class<\/span> <span class=\"nc\">Main<\/span> <span class=\"o\">{<\/span>\r\n  <span class=\"kd\">public<\/span> <span class=\"kd\">static<\/span> <span class=\"kt\">void<\/span> <span class=\"nf\">main<\/span><span class=\"o\">(<\/span><span class=\"nc\">String<\/span><span class=\"o\">[]<\/span> <span class=\"n\">args<\/span><span class=\"o\">)<\/span> <span class=\"o\">{<\/span>\r\n    <span class=\"c1\">\/\/ BigDecimal\u3092\u4f7f\u308f\u306a\u3044\u5834\u5408<\/span>\r\n    <span class=\"nc\">System<\/span><span class=\"o\">.<\/span><span class=\"na\">out<\/span><span class=\"o\">.<\/span><span class=\"na\">println<\/span><span class=\"o\">(<\/span><span class=\"mi\">1<\/span> <span class=\"o\">-<\/span> <span class=\"mf\">0.9<\/span><span class=\"o\">);<\/span> <span class=\"c1\">\/\/ 0.09999999999999998<\/span>\r\n\r\n    <span class=\"c1\">\/\/ BigDecimal\u3092\u4f7f\u3046\u5834\u5408<\/span>\r\n    <span class=\"nc\">BigDecimal<\/span> <span class=\"n\">number1<\/span> <span class=\"o\">=<\/span> <span class=\"nc\">BigDecimal<\/span><span class=\"o\">.<\/span><span class=\"na\">valueOf<\/span><span class=\"o\">(<\/span><span class=\"mi\">1<\/span><span class=\"o\">);<\/span>\r\n    <span class=\"nc\">BigDecimal<\/span> <span class=\"n\">number2<\/span> <span class=\"o\">=<\/span> <span class=\"nc\">BigDecimal<\/span><span class=\"o\">.<\/span><span class=\"na\">valueOf<\/span><span class=\"o\">(<\/span><span class=\"mf\">0.9<\/span><span class=\"o\">);<\/span>\r\n    <span class=\"nc\">System<\/span><span class=\"o\">.<\/span><span class=\"na\">out<\/span><span class=\"o\">.<\/span><span class=\"na\">println<\/span><span class=\"o\">(<\/span><span class=\"n\">number1<\/span><span class=\"o\">.<\/span><span class=\"na\">subtract<\/span><span class=\"o\">(<\/span><span class=\"n\">number2<\/span><span class=\"o\">));<\/span> <span class=\"c1\">\/\/ 0.1<\/span>\r\n  <span class=\"o\">}<\/span>\r\n<span class=\"o\">}<\/span>\r\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"<p>BigDecimal\u662f\u4e00\u4e2aJava\u7c7b\uff0c\u7528\u4e8e\u9ad8\u7cbe\u5ea6\u7684\u5341\u8fdb\u5236\u8ba1\u7b97\u3002 \u8aa4\u5dee\u304c\u51fa\u306a\u3044\u3088\u3046\u306b\u6b63\u78ba\u306b\u8a08\u7b97\u3059\u308b\u305f\u3081\u306e\u30af\u30e9\u30b9  [&hellip;]<\/p>\n","protected":false},"author":10,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[227],"class_list":["post-31133","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-227"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - 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