BigDecimal-解決商業計算

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1、String to BigDecimal

1 String amtStr = "1234.56";2 BigDecimal amtBD  = new BigDecimal(amtStr);3 System.out.println("amtBD = " + amtBD);4 System.out.println("amtBDV1 = " + amtBD.setScale(3,BigDecimal.ROUND_HALF_UP));//設定精度為3,四捨五入

2、Double to BigDecimal

Double doub = 1234.56;BigDecimal amtBDD = new BigDecimal(String.valueOf(doub));System.out.println("amtBDD = " + amtBDD.setScale(1,BigDecimal.ROUND_HALF_UP)); //amtBDD = 1234.6

　　

 

BigDecimal-解決商業計算