Java convert ArrayList to double[]

Written by iassael on 25/05/2013. Posted in computing

Java can be very efficient sometimes… First, you need to to download the apache commons lang library, from here http://commons.apache.org/proper/commons-lang/. Then, using this function you can convert your List<>
double[] arr = ArrayUtils.toPrimitive(arrlist.toArray(new Double[arrlist.size()]))

Tags: arraylist, double, java, list, premitive

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