groovy how create array with name?

Question

IM trying to use this command in groovy but I cant print the array

appears and error

       Caught: java.lang.IllegalArgumentException: argument type mismatch

java.lang.IllegalArgumentException: argument type mismatch at Test.main(Test.groovy:7)

how I could solve this

I use this same command without this line and this works

          testArray["fff"] = "B"

this is my code

I dont know because I cant create this 2d array

 def testArray =  []
  testArray[0] = "A"
      testArray["fff"] = "B"
      testArray[2] = "C"

   println testArray

please give me a help

hi I see that in ruby is possible create array with name but IN groovy i dont know — user8903285, Dec 07 '17 at 19:09
use `testArray = [:]` instead. And this is not an array but a **map**. I assume that this is also the case in ruby. AFAIK only PHP has some odd array/map mishmash — cfrick, Dec 07 '17 at 19:16

score 2 · Accepted Answer · answered Dec 07 '17 at 20:56

2

Use testArray = [:] instead. And this is not an array but a map (a LinkedHashMap to be specific and [:] is the literal Groovy uses to create it). Maps in Java/Groovy are associative data structures to store key-value-relations. Access via map[key] is an enhancement, that Groovy brings to the table.

answered Dec 07 '17 at 20:56

cfrick

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@cfrick can please help me with this problem https://stackoverflow.com/questions/47717505/groovy-create-a-map-with-jax-b-objects-specific-attributes – OTUser Dec 08 '17 at 19:35

score 1 · Answer 2 · answered Dec 07 '17 at 20:09

Arrays only take ints as indices. "fff" is not a valid value for an index, therefore java crashes, telling you its a mismatch.

If you want to create a 2d array of Strings then you should try this.

String[][] testArray = new String[x][y];

where x and y are the dimensions for this array.

groovy how create array with name?

2 Answers2