how to find if groovy args contains a particular string

println args

println args.size()

println args.each{arg-> println arg}

println args.class

if (args.contains("Hello"))
    println "Found Hello"

when ran give following error:

[hello, somethingelse]
2
hello
somethingelse
[hello, somethingelse]
class [Ljava.lang.String;
Caught: groovy.lang.MissingMethodException: No signature of method: [Ljava.lang.
String;.contains() is applicable for argument types: (java.lang.String) values:
[Hello]

why can I not do contains?

From stackoverflow

• Because args is String[] but not List<String>

  You can use

  if (args.grep('Hello'))
      println "Found Hello"
  

• That's because args is an array of String (just like in Java) and not a String, take a look at the result of:

  print args.getClass()
  
  >>class [Ljava.lang.String;
  

  Notice the [L notation.

  A regular String would result in:

  >>class java.lang.String
  

  The Groovy containers do not have the contains() operation (String does), yet the java.lang.Object of Groovy SDK has the grep() operation (shown on the first reply).