(Java Newbie) Convert first few characters of string to double

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January 30th, 2013, 10:25 AM

EffX

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(Java Newbie) Convert first few characters of string to double

Let's say I have a string:

Code:

String s1 = "90:39.2";

I would like to parse all the numbers up to ":" into a double, in this case 90.

I can find the index of ":" by using:

Code:

int n = s1.indexOf(":");

But I am not sure how to 'remove' the following numbers / characters before using this code to parse the string:

Code:

double result = Double.parseDouble(StringUpToColon);

January 30th, 2013, 01:43 PM

stdunbar

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Building on the code you have you'd want to do something like:

java Code:

Original - java Code
String s1 = "90:39.2"; int n = s1.indexOf(":"); String firstPart = null; if( n > -1 ) firstPart = s1.substring( 0, n ); if( firstPart != null ) double result = Double.parseDouble(firstPart);

String s1 = "90:39.2";
int n = s1.indexOf(":");
 
String firstPart = null;
if( n > -1 )
    firstPart = s1.substring( 0, n );
if( firstPart != null )
    double result = Double.parseDouble(firstPart);

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January 31st, 2013, 03:30 AM

EffX

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Substring, that's what I needed. Thanks!

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