Java BigDecimal without E

Question

I have a BigDecimal variable

BigDecimal x = new BigDecimal(\"5521.0000000001\");

Formula:

x = x.add(new BigDecimal(\"-1\")
         


        

Answer 1

Perhaps using BigDecimal isn't really helping you.

double d = 5521.0000000001;
double f = d - (long) d;
System.out.printf("%.10f%n", f);

prints

0.0000000001

but the value 5521.0000000001 is only an approximate representation.

The actual representation is

double d = 5521.0000000001;
System.out.println(new BigDecimal(d));
BigDecimal db = new BigDecimal(d).subtract(new BigDecimal((long) d));
System.out.println(db);

prints

5521.000000000100044417195022106170654296875
1.00044417195022106170654296875E-10

I suspect whatever you are trying to is not meaningful as you appear to be trying to obtain a value which is not what you think it is.