JavaOne Talk: Groovy Word Sort

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public class GroovyWordSort {
  File dataFile
  List words = []
  public GroovyWordSort(fileName){
    dataFile = new File(fileName)
  }

  def sortedWords(){
    if (!words){
      dataFile.eachLine{it.tokenize().each {words.add(it) }}
      words = words.sort{w,w1 -> w.toLowerCase() <=> w1.toLowerCase()}
    }
    words
  }
}