Java string小数的相关内容

Java：String.format格式化浮点数保留指定小数位输出字符串

利用String.format可以格式化输出字符串方法签名public static String format(String format, Object... args);常用的占位符%d 整数%s 字符串%f 浮点数示例// 输出浮点数 String.format("%f", 3.141592...

Java：String.format实现double类型保留固定小数位

代码示例double num = 2.3333333; String numFixed = String.format("%.2f", num); System.out.println(numFixed); // 2.33参考Java – double保留两位小数的4种方法

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[帮助文档] QuickBI图表外部链接跳转报错Failedtoconvertvalueoftype'java.lang.String'torequiredtype'java.lang.Long';nestedexceptionisjava.lang.NumberFormatException:Forinputstring:"[order_id]"

问题描述Quick BI图表外部链接跳转报错：Failed to convert value of type 'java.lang.String' to required type 'java.lang.Long'; nested exception is java.lang.NumberForma...

Java String 字符串截取保留小数点后两位

/** * 截取保留小数点后两位 */ public static String dealRateStr(String rateStr) { int i = rateStr.indexOf("."); //如果没有小数点不 if (i == -1) { r...

java BigDecimal(String val)确保小数点后有效位数 ✨ 每日积累

float输出，前7位有效数字是真实值，第8位是估算值，可能和原始一致，可能是四舍五入上来的。double值，前15位有效数字是真实值，第16位是估算值，可能和原始一致，可能是四舍五入上来的。当小数点后的有效位数超过float和doulbe的有效位置之后，计算会丢失精度。...

[帮助文档] Dataphin集成任务报错java.lang.NumberFormatException:Forinputstring:"null"

问题描述用户是用集成任务同步数据，从AnalyticDB MySQL2.0同步到其他数据库，任务报错“com.alibaba.datax.common.exception.DataXException: Code:[ADSReader-00], Description:[错误发生了，请联系管理员]....

[帮助文档] Dataphin管道任务报错java.sql.SQLException:Incorrectstringvalue:'\xF4\x80\x80\x8E\xF4\x80...'forcolumn'XXX'atrow1

问题描述用户使用管道任务同步数据到MySQL，任务报错“java.sql.SQLException: Incorrect string value: '\xF4\x80\x80\x8E\xF4\x80...' for column 'XXX' at row 1”。问题原因报错字段有特殊符号，UTF-...

[帮助文档] 同步任务报错java.sql.SQLException:Incorrectstringvalue:'\xF4\x80\x80\x8E\xF4\x80...'forcolumn'XXX'atrow1

问题描述用户在使用集成任务同步数据到MySQL过程中，同步任务报错“java.sql.SQLException: Incorrect string value: '\xF4\x80\x80\x8E\xF4\x80...' for column 'XXX' at row 1”。问题原因报错字段可能存储...

[帮助文档] Dataphin中管道任务将MySQL数据同步到Maxcompute,运行报错[同步数据出现业务脏数据情况,数据类型转换错误.]-String['']不能转为BigDecimal.-java.lang.NumberFormatException

问题描述管道任务将MySQL数据同步到Maxcompute，运行报错“[同步数据出现业务脏数据情况，数据类型转换错误 .] - String [''] 不能转为BigDecimal . - java.lang.NumberFormatException”。完整的异常如下：2021-11-05 00:...

我的Android进阶之旅------>Java字符串格式化方法String.format()格式化float型时小数点变成逗号问题

今天接到一个波兰的客户说有个APP在英文状态下一切运行正常，但是当系统语言切换到波兰语言的时候，程序奔溃了。好吧，又是我来维护。好吧，先把系统语言切换到波兰语，切换到波兰语的方法查看文章我的Android进阶之旅------>Andr...

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