learning java BigDecimal类

Posted 2022-05-12 lianghong881018

使用BiDecimal类是了为防止运算时精度丢失：

        var f1 = new BigDecimal("0.05");
        var f2 = BigDecimal.valueOf(0.01);
        var f3 = new BigDecimal(0.05);
        out.println(f1.add(f2));
        out.println(f1.subtract(f2));
        out.println(f1.multiply(f2));
        out.println(f1.divide(f2));

output:

0.06
0.04
0.0005
5