Groovy List

/* Hello World in Groovy */
def allowedStates = ["all","blue","green","red","yellow","black","white"]
def displayStates = []
def stateList = "blue,green".tokenize(',')

allowedStates.each { 
    if(stateList.contains(it)) {
        displayStates.add(it + ":selected")
    } else {
        displayStates.add(it)
    }
}

displayStates.each {
    println(it)
}