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Hello as they are, we here investigate JavaFX and begin to see their data types and learn how to work with them.

Well, let
Data Types:

String and Integer Number

Boolean

Duration


Void Null

String:
3. is the kind of data that we use for storing character representation, practically operated As in java, but we will find some differences. Declaration and initialization
5. var string1 = 'String 1'; var str2 = "String 1";
6. As can be seen here is allowed to initialize or assign a String either double quotes or single quotes whereas in Java we could only do it with quotes. Also, if notice is not necessary to tell which is of type String and this type and is assigned automatically.

often want to concatenate variables of type String, in JavaFX this can be solved using within " a closure on which is evaluated Concatenated string and this is the new String , we see an example to clarify this


def name = 'Joe';
var result = "Hello {name}";

 println (result);   
 If you run This code will see that the phrase appears   console "Hello Joe 

" as the outcome variable is a reference to the new String that is generated


Note:

closure is called to the fact that create references to local variables which defined the closure, the closure-Minimum own explanation,

  
 
 def value = true;  var response = "The answer is {if (value)" Yes "else" No "}"; 

As we see here we are defining a closure if it returns a "Yes" or "No" we might think of this as a function receives as parameter the variable value, instead it simply the closure have access to references from which he has been defined. not do it for long with the String will show the latest example where we will see two references to concatenate String def

frase1 = "This example"; frase2 def = "joins two strings." Def fraseFinal = "{ frase1 frase2} {} "; println (fraseFinal)
Number and Integer

:  
 These data types are referred to the numeric types and we will distinguish two types of integers and floating point. Def 
  

numeroUno = 1.0, / / \u200b\u200bHere the compiler infers the data type Number Numberof
def = 1; / / Here the compiler infers the data type Integer

/ / Here we make an explicit statement

 def numeroTres: Number = 1.0;  def numeroCuatro: Integer = 1; 
 
 
 
 usually recommended to use the type Integer and leave  Number type only cases of genuine necessity. 

Boolean:

 This value is equal to the rate of Java and accepts Boolean values \u200b\u200btrue / false.  
 
 if (isAsleep) {
 wakeup ();} 
 
 
  The code that we enter in "()" will be evaluated on change the code entered in "{}" will be executed 

Duration:
This is a special type of JavaFX is responsible for representing a time unit 5ms / / 5 milliseconds
10s / / 10 seconds
30m / / 30 minutes

 1h; / / 1 hour  
 
'll see in more detail this type when we start using animations as we want there in different moments of a Time Line to run various actions. 
  

Void:
I think this is already known to everyone, but we say it is the type used to indicate that a function does not return any value.
function print (): Void {
println ("This function returns nothing!");}

  print function () {
 println ("This function returns nothing!");} 
 
 As 
  we can see we have two forms that are valid to indicate that the function does not return any value, either explicitly with: Void or implied without indicating the return type 

Null: This guy is special because it allows us to indicate the lack of normal, when we declare variables are referencing data may be invalid.

These would be the 6 types of data found within JavaFX, now we only start to work more with them and get to know them, we'll see how they are declared within classes and their means of access. Greetings