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I have the following code:
double d1=1000000000000000000.0; //which is equivalent to 1.0e^18
double d2=3434.0;
System.out.println(d1+d2);
which prints 1000000000000003460 instead of 1000000000000003434. What is the problem?
@Anthony Pegram is right. If you need such precision use BigDecimal.