converted to long double type

System.out.println(new Double(234314.999999999).longValue());//234314
  System.out.println(new Double(234314.9999999999).longValue());//234314
  System.out.println(new Double(234314.99999999999).longValue());//234315
  System.out.println(new Double(234314.999999999999).longValue());//234315 

 

  System.out.println((long)234314.999999999);//234314
  System.out.println((long)234314.9999999999);//234314
  System.out.println((long)234314.99999999999);//234315
  System.out.println((long)234314.999999999999);//234315

 

When the double turn long, different number of decimal places, the result may be different

Direct normal decimal rounding, decimal places may carry not less than 11 when