Groovy: Accessing fields of a class

Groovy supports two ways to access the fields of a class.

a.   Using . operator

b.   Using subscript [] operator

Example

Employee emp1 = new Employee()

emp1.name = "Krishna"

emp1.id = 523

You can access the property using subscript operator.

emp1["name"] = "Yada"

emp1["id"] = 567

Employee emp1 = new Employee()

emp1.name = "Krishna"

emp1.id = 523

You can even access the fields of an object using subscript operator like below.

emp1["name"] = "Yada"

emp1["id"] = 567

HelloWorld.groovy

class Employee{
 String name
 int id
}

void printEmployee(emp){
 println "name : ${emp.name}"
 println "id : ${emp.id}"
}

Employee emp1 = new Employee()
emp1.name = "Krishna"
emp1.id = 523

printEmployee(emp1)

emp1["name"] = "Yada"
emp1["id"] = 567

printEmployee(emp1)

Output

name : Krishna

id : 523

name : Yada

id : 567

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