Programming Groovy 2

2.3 Flexible Initialization and Named Arguments

Groovy gives us the flexibility to initialize a ​JavaBean​ class. When constructing an object, simply give values for properties as comma-separated name-value pairs. This is a post-construction operation if our class has a no-argument constructor. We can also design our methods so they can take named arguments. To take advantage of this feature, define the first parameter as a ​Map​. Let’s see these in action:

class Robot {
  def type, height, width
  def access(location, weight, fragile) {
    println "Received fragile? $fragile, weight: $weight, loc: $location"
  }
}
robot = new Robot(type: 'arm', width: 10, height: 40)
println  ...