File exists, cant be read giving path in standard way, identical strings don't match - Groovy

I have a very frustrating problem reading files in Groovy (windows). I've spent quite a bit of time trying to track down the root cause. However I have boiled it down to two identical file names not matching, so i'm bamboozled!

Here's some diagnostic code and the results:

def rootPath = "x:/"
def filePath

files.each
{

    filePath = rootPath + it
    File xmlFile = new File(filePath)
    println xmlFile.canRead()    //returns : false
    println xmlFile.exists()     //returns : false

    xmlFile = new File(new File(filePath).getParent() + "/" + new File(filePath).getName().toString())
    println xmlFile.canRead()     //returns : false


    String fileName = new File(filePath).getName()
    String parentDir = new File(filePath).getParent()
    new File(parentDir).list().each
    {
        println "|" + it + "|" + fileName + "|"
            开发者_运维百科   //returns |PreUpload_140111-192158.xml|PreUpload_140111-192158.xml|

        println it.toString().equals(fileName)
               //returns false!!

        println "Can Read : " + new File(parentDir + "/" + it.toString()).canRead()
               //returns true
    }
}

Do you get the same results with this cleaned up code?

def rootPath = "x:/"

files.each { f ->
  File xmlFile = new File( rootPath, f )
  String filename = xmlFile.name
  File parentDir = xmlFile.parent

  parentDir.list().each { f2 ->
    // Does this still print |PreUpload_140111-192158.xml|PreUpload_140111-192158.xml|
    println "|$f2|$fileName|"

    // Does this still print false?
    println( f2 == fileName )

    boolean canRead = new File( parentDir, f2 ).canRead()

    // still prints true ?
    println "Can Read : $canRead"
  }
}

[Edit]

So, it would appear that the issue was CR characters at the end of the Strings in the files collection

Not sure how the variable files is populated, but something somewhere needs a trim() ;-)