Sample Groovy

sample-groovy.groovy

class Animal implements Skills, Talk {
    abstract String voice
    Animal(){
        initSkills()
    }
}

trait Talk {
    def talk(){println "Ele diz ' ${voice.concat(' ') * 3}'"}
}


trait CanFly {
    def fly(){println 'Sabe voar...'}

}

trait CanWalk {
    def walk(){println 'Sabe andar...'}
}

trait CanSwim {
    def swim(){println 'Sabe nadar...'}
}

trait Skills {
    def skills = []
    def initSkills(){
        if (this instanceof CanFly)  skills << 'voar' 
        if (this instanceof CanSwim) skills << 'nada' 
        if (this instanceof CanWalk) skills << 'andar'
    }  
    
    def canDo(){
        skills.each(){println 'Ele sabe ' + it}
    }
}

class Fish extends Animal implements CanSwim {
    String voice = '...'
}

class Dog extends Animal implements CanWalk {
    String voice = 'au'
}

class Duck extends Animal implements CanFly, CanWalk, CanSwim{
    String voice = 'quack'
}

def animal = new Duck() 
animal.talk()
animal.canDo()

println ''
println ''

animal = new Dog()
animal.talk()
animal.canDo()

println ''
println ''

trait Chihuahua {
    def humor(){println 'Humor: 50% Odio | 50% Tremor'}
}

def moody = animal as Chihuahua
moody.talk()
moody.canDo()
moody.humor()