What is the import for this Java function?

array = ArrayUtils.removeElement(array, element)

Hello I am trying to use the above Array Utlity but i do not know what I need to import in order to use it.

I am using Apache NetbeansIDE 22

I have downloaded the commons-lang3 stuff and tried to use the following "import org.apache.commons.lang3.ArrayUtils;" but i get errros from the compiler