Groovy: Working with Maps

In Groovy, maps are created using map literal syntax notation [:].

HelloWorld.groovy

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

println "Capital of India : ${countryCapitals.get('India')}"
println "Capital of Australia : ${countryCapitals.get('Australia')}"

Output

Capital of India : new Delhi

Capital of Australia : Canberra

By default, a map is an instance of 'java.util.LinkedHashMap'.

HelloWorld.groovy

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

println "Class name : ${countryCapitals.getClass()}"

Output

Class name : class java.util.LinkedHashMap

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