Groovy: Method named parameters

Groovy allows you to call a function using named parameters. To use named parameters feature, first argument to the method must be a Map.

HelloWorld.groovy

def printEmployeeDetails(Map employee){
 println "name : ${employee.name}, id : ${employee.id}"
}

printEmployeeDetails(name : "krishna", id : 1234)

Output

name : krishna, id : 1234

Combining named parameters and positional parameters

A method can take both named and positional parameters.

HelloWorld.groovy

def printEmployeeDetails(Map employee, String organization){
 println "name : ${employee.name}, id : ${employee.id}, organization : $organization"
}

printEmployeeDetails(name : "krishna", id : 1234, "ABC Corporation")

Output

name : krishna, id : 1234, organization : ABC Corporation

Named parameters can be at any position, groovy groups them into a map.

printEmployeeDetails(name : "krishna", id : 1234, "ABC Corporation")

printEmployeeDetails(name : "krishna", "ABC Corporation", id : 1234)

printEmployeeDetails(id : 1234, "ABC Corporation", name : "krishna")

HelloWorld.groovy

def printEmployeeDetails(Map employee, String organization){
 println "name : ${employee.name}, id : ${employee.id}, organization : $organization"
}

printEmployeeDetails(name : "krishna", id : 1234, "ABC Corporation")
printEmployeeDetails(name : "krishna", "ABC Corporation", id : 1234)
printEmployeeDetails(id : 1234, "ABC Corporation", name : "krishna")

Output

name : krishna, id : 1234, organization : ABC Corporation

name : krishna, id : 1234, organization : ABC Corporation

name : krishna, id : 1234, organization : ABC Corporation

Previous                                                 Next                                                 Home