Convert string to float?

Question

Just as title says. I don't believe it is possible to do this but if it is let me know.

This is needed for a bukkit (minecraft server) plugin I'm writing. I want to take a command: tnt [power]. Where power is the string returned that I want to convert to float.

Thanks

Read the Java API for float [here](http://docs.oracle.com/javase/1.4.2/docs/api/java/lang/Float.html) You can construct a new float from a string. There are also other ways to do it. Please use Google. — ubiquibacon, Jan 02 '12 at 20:29

score 106 · Accepted Answer · edited Jan 09 '17 at 07:15

106

Use Float.valueOf(String) to do the conversion.

The difference between valueOf() and parseFloat() is only the return. Use the former if you want a Float (object) and the latter if you want the float number.

edited Jan 09 '17 at 07:15

Baby

5,062
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52

answered Jan 02 '12 at 20:28

Francis Upton IV

19,322
3
53
57

score 10 · Answer 2 · answered Jan 02 '12 at 20:28

10

Using Float.parseFloat()?

class Test {
    public static void main(String[] args) {
        String s = "3.14";
        float f = Float.parseFloat(s);
        System.out.println(f);
    }
}

answered Jan 02 '12 at 20:28

Oliver Charlesworth

267,707
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score 1 · Answer 3 · answered Jan 02 '12 at 20:29

1

String s = "3.14";
float f = Float.parseFloat(s);

answered Jan 02 '12 at 20:29

Leo Izen

4,165
7
37
56

score 1 · Answer 4 · answered Jan 02 '12 at 20:34

1

Try this:

String numberStr = "3.5";
Float number = null;
try {
   number = Float.parseFloat(numberStr);
} catch (NumberFormatException e) {
    System.out.println("numberStr is not a number");
}

answered Jan 02 '12 at 20:34

Wilmer

1,025
5
9

The try/catch is pretty essential. Try it with bad data to see what happens. – Alan Carwile Apr 10 '14 at 18:42

Gauravj · Answer 5 · 2016-06-09T23:15:39.413

0

public class NumberFormatExceptionExample {
private static final String str = "123.234";
public static void main(String[] args){
float i = Float.valueOf(str); //Float.parseFloat(str);
System.out.println("Value parsed :"+i);
}
}

This should resolve the problem.

Can anyone suggest how should we handle this when the string comes in 35,000.00

edited Jun 09 '16 at 23:15

answered Jun 09 '16 at 05:21

Gauravj

21
3

score 0 · Answer 6 · answered Oct 28 '17 at 20:40

0

Try this:

String yourVal = "20.5";
float a = (Float.valueOf(yourVal)).floatValue(); 
System.out.println(a);

answered Oct 28 '17 at 20:40

Mohamed Ali AMRI

1
2

Gelberth Amarillo Rojas · Answer 7 · 2021-04-12T12:51:43.257

-1

The easyest way is:

///Groovy/////
String a = "23.5";
Float b = a.toFloat();

////Java////
String a = "23.5";
float b = Float.valueOf(a);

edited Apr 12 '21 at 12:51

answered Apr 08 '21 at 16:18

Gelberth Amarillo Rojas

619
6
7

What language are you using? It isn't java. – NomadMaker Apr 08 '21 at 16:53
Excuse me that language is in groovy, i edit to work in java – Gelberth Amarillo Rojas Apr 12 '21 at 12:49

Convert string to float?

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