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georgeliatsos
georgeliatsos

Reputation: 1218

Convert 2 decimal to integer

I want to convert number 2.55 to 255 in java.

I have tried the following code but I am getting 254 instead of 255:

final Double tmp = 2.55;
final Double d = tmp * 100;
final Integer i = d.intValue();

What is the correct way to achieve this?

Upvotes: 3

Views: 287

Answers (3)

Imbar M.
Imbar M.

Reputation: 1114

the value of d is 254.999999999997. this is a problem with floating point calculations. you could use

i = Math.round(d);

to get 255.

--- delete the bottom.. was wrong

Upvotes: 1

Ryuzaki L
Ryuzaki L

Reputation: 40088

It is simple by using BigDecimal

    BigDecimal bg1 = new BigDecimal("123.23");
    BigDecimal bg2 = new BigDecimal("12323");

    bg1= bg1.movePointLeft(-2); // 3 points right

    bg2= bg2.movePointLeft(3);  // 3 points left


    System.out.println(bg1);     //12323

    System.out.println(bg2);     //12.323

Upvotes: 2

ΦXocę 웃 Пepeúpa ツ
ΦXocę 웃 Пepeúpa ツ

Reputation: 48307

you have to round that value, and you can use primitives for that.. i.e. use the primitive double instead of the wrapper class Double

    final double tmp = 2.55;
    final double d = tmp * 100;
    long i = Math.round(d);

    System.out.println("round: "+ i);

Upvotes: 3

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