Groovy: Get size of map

'size()' method returns number of <key, value> pairs in the map.

HelloWorld.groovy

def countryCapitals = ["India" : "new Delhi", "Australia" : "Canberra"]

println "Total elements in the map are : ${countryCapitals.size()}"

println "\nAdding two more elements to the countryCapitals"

countryCapitals.put("Bulgaria", "Sofia")
countryCapitals["Canada"] = "Ottawa"

println "\nTotal elements in the map are : ${countryCapitals.size()}"

Output

Total elements in the map are : 2

Adding two more elements to the countryCapitals

Total elements in the map are : 4

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