DictionaryTest.groovy

package com.groovy.testDictionary

class Dictionary {
  def key
  def value
  def dict = [:]

  Dictionary (){}
  
  Dictionary (def key, def value){
    put(key, value)
  }
  
  void validate(def key, def value){
    validateNotNullObject(key)
    validateNotNullObject(value)
  }
  
  void validateNotNullObject(def str){
    if(str == null){throw new RuntimeException("can not be null key/value")}
  }
  
  def put(def key, def value){
    try{
      validate(key, value)
      this.dict[key] = value
      println "have this dictionary: ${this.dict}"
    }catch(RuntimeException e){
      println "have a exception ${e.getMessage()}"
    }
  }
  
  void printInfo(){
  println "i have this data in the dictionary  \n ${this.dict}"
  }
}

def myDictionary = new Dictionary()
myDictionary.printInfo()
myDictionary.put('Name','Luis')
myDictionary.printInfo()
myDictionary.put('nullValue',null)
myDictionary.put(null,'nullKey')
myDictionary.printInfo()
myDictionary.put('age',28)