Remove digits which are in the decimal place

Question

I get a double value (eg. -3.1234) which contains a value in decimals (0.1234 in this case). I want to remove the value in decimal value (in this case I wanted the value -3). How do I do it? I know how to remove the decimal if the decimal only has 0, but in this case I don't have the decimal value as 0.

Anyways here is the code for that:

DecimalFormat format = new DecimalFormat();
format.setDecimalSeparatorAlwaysShown(false);

Double asdf = 2.0;
Double asdf2 = 2.11;
Double asdf3 = 2000.11;
System.out.println( format.format(asdf) );
System.out.println( format.format(asdf2) );
System.out.println( format.format(asdf3) );
/*
prints-:
2
2.11
2000.11
*/

check this answer https://stackoverflow.com/a/26589526/7505436 — vm345, May 29 '17 at 09:19

Lionel Briand · Accepted Answer · 2017-05-29T09:29:58.430

4

If you just want to print it :

String val = String.format("%.0f", 2.11)
// val == "2"

If you want to keep the double type but without decimals :

double val = Math.floor(2.11);
// val == 2.000

If you don't care about type you can cast the double into int :

int val = (int) 2.11;
// val == 2

//double as object
int val = myDouble.integerValue();

edited May 29 '17 at 09:29

answered May 29 '17 at 09:24

Lionel Briand

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score 1 · Answer 2 · answered May 29 '17 at 09:17

1

You can simply use the intValue() method of Double to get the integer part.

answered May 29 '17 at 09:17

Anuj

1,912
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score 1 · Answer 3 · answered May 29 '17 at 09:19

1

You can cast it to int

int i=(int)2.12
System.out.println(i); // Prints 2

answered May 29 '17 at 09:19

Rasel

5,488
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score 1 · Answer 4 · answered May 29 '17 at 09:21

1

Round up decimal value & convert it into integer;

Integer intValue = Integer.valueOf((int) Math.round(doubleValue)));

answered May 29 '17 at 09:21

priyanka kamthe

519
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Wow, maybe you should add an "(int)" in front of Integer.valueOf, just to be sure... :) – Prexx May 29 '17 at 09:46

score 1 · Answer 5 · answered May 29 '17 at 09:38

1

http://www.studytonight.com/java/type-casting-in-java check out type conversion in java

    double asdf2 = 2.11;
    int i = (int)asdf2;
    System.out.println(asdf2);
    System.out.println(i);

    Output:

    2.11`
    2

answered May 29 '17 at 09:38

Sagar Chandani

130
7

Remove digits which are in the decimal place

5 Answers5