Why is there a possible loss of precision converting a String to double?

Question

for (int i = 0; i < 18; i++) {
  line = file.readLine();
  String[] word = line.split(";");

  appartment[i] = new Appartment();
  appartment[i].floor= Integer.parseInt(word[0]);
  appartment[i].name = word[1];
  appartment[i].money= Double.parseDouble(word[2]);
  appartment[i].owner= word[3];
}

Could someone tell my why this is not working? Im reading from a file. I am trying to convert money from string to double, but it says

possible loss of precision. 
required: int
found: double

I need doubles so the owners account also can go negative.

Answer 1

- It seems that appartment is an Array of type Appartment , where the Appartement's object field named money is in int type.

- But you are assingnig it the value as double type, so you will need an explicit cast from double to int,

Eg:

appartment[i].money= (int) Double.parseDouble(word[2]);

Answer 2

Apparently appartment[i].money= Double.parseDouble(word[2]); is a problem here. If the type of money is int , either you should cast the value of word[2] to int like appartment[i].money = (int(Double.parseDouble(word[2])); or you should parse as an integer something like appartment[i].money= Integer.parseInt(word[2]);

Answer 3

用这个，

  appartment[i].money = Integer.parseInt(word[2]);

Answer 4

您可能在辩解中认为金钱是整数，请尝试将其更改为两倍...

Answer 5

The best practice when representing money in Java is to use BigDecimal. See: http://www.javapractices.com/topic/TopicAction.do?Id=13 for more details.