1 class Sample { 2     def names = ["anna", "annie", "tommy", "bobby", "doggy"]; 3  4     public static void main(def args) { 5         //Loop 6         for (i in 0..5) { 7             println "Hello, World!" 8         } 9 10         //Closure11         def sample = new Sample();12         //Operation of array13         sample.names << "Terry";14         println sample.names;15 16         println "-------"17         //lambda expression   each18         sample.names.each({ e -> println(e) });19 20         println "-------"21         //keyword it.22         sample.names.each { println it }23 24         println "-------"25 26         //filter27         List
     
       matched = sample.names.findAll { e -> e.contains("o") }28         matched.each { println it }29 30         println "-------"31         //sort32         sample.names << "William";33         sample.names << "bob";34         List
      
        sorted = sample.names.sort({ e -> e.length() })35         sorted.each { println it }36 37         println "-------"38         //grouped39         Map
       
         grouped = sample.names.groupBy { e -> e.contains("o") }40         grouped.each { key, value -> println "$key:$value" }41     }42 }