Convert a string to a float in java

Question

Possible Duplicate:
java : convert float to String and String to float

I'm extracting some numbers from a string, these are being stored as another string. Is there a way to convert these strings into a float?

i tried float f = "string"; but this didnt work.

Thanks

http://stackoverflow.com/questions/7552660/java-convert-float-to-string-and-string-to-float — MK., Nov 27 '12 at 21:09

score 3 · Answer 1 · answered Nov 27 '12 at 21:09

3

answered Nov 27 '12 at 21:09

SLaks

score 1 · Answer 2 · answered Nov 27 '12 at 21:09

1

This way---: Float.parseFloat("0.4");

answered Nov 27 '12 at 21:09

User

score 1 · Accepted Answer · answered Nov 27 '12 at 21:14

Try Float.parseFloat but it does throw a RuntimeException if it fails so this is one time I would recommend catching it.

try {
    Float.parseFloat("0.4")
} catch (NumberFormatException e){ 
  //input is not a float
}

If you want more precision then look at Double.parseDouble() or even the BigDecimal string constructor

3 Answers3