title: JavaFX Label doesn't set text
body: <p>I'm doing a Calendar with JavaFX SceneBuilder.</p>
  
  <p>I declare my Label on my Main class:</p>
  
  <pre><code>public class Main extends Application {
  //Calendar used
  public Calendar cal;
  //variables for get the number of week+current year
  public static int weeks, year;
  @FXML
  //Text areas for the 4 weeks column
  public TextArea week1,week2,week3,week4;
  @FXML 
  //4 control Buttons
  public Button prev,next,next2,prev2, start;
  @FXML
  //Labels
  public Label lab1;
  </code></pre>
  
  <p>And the method which I'm trying to set text is this one: </p>
  
  <pre><code>public void ClickStart (ActionEvent event){
      lab1=new Label();
      lab1.setText("hola");
      cal=Calendar.getInstance();
      year = cal.get(Calendar.YEAR);
      weeks= cal.get(Calendar.WEEK_OF_YEAR);
      week1.setText("Week " + Integer.toString(weeks) + " " + Integer.toString(year));
      cal.add(Calendar.WEEK_OF_YEAR, 1);
      weeks= cal.get(Calendar.WEEK_OF_YEAR);
      year = cal.get(Calendar.YEAR);
      week2.setText("Week " + Integer.toString(weeks) + " " + Integer.toString(year));
      cal.add(Calendar.WEEK_OF_YEAR, 1);
      weeks= cal.get(Calendar.WEEK_OF_YEAR);
      year = cal.get(Calendar.YEAR);
      week3.setText("Week " + Integer.toString(weeks) + " " + Integer.toString(year));
      cal.add(Calendar.WEEK_OF_YEAR, 1);
      weeks= cal.get(Calendar.WEEK_OF_YEAR);
      year = cal.get(Calendar.YEAR);
      week4.setText("Week " + Integer.toString(weeks) + " " + Integer.toString(year));
      cal.add(Calendar.WEEK_OF_YEAR, -3);
      }
  </code></pre>
  
  <p>I include also my .fmxl file if necessary:</p>
  
  <pre><code>&lt;?xml version="1.0" encoding="UTF-8"?&gt;
  
  &lt;?import java.lang.*?&gt;
  &lt;?import javafx.scene.control.*?&gt;
  &lt;?import javafx.scene.layout.*?&gt;
  &lt;?import javafx.scene.layout.VBox?&gt;
  
  &lt;GridPane xmlns:fx="http://javafx.com/fxml/1" xmlns="http://javafx.com/javafx/2.2" fx:controller="application.Main"&gt;
    &lt;children&gt;
      &lt;GridPane&gt;
        &lt;children&gt;
          &lt;GridPane&gt;
            &lt;children&gt;
              &lt;TextArea editable="false" mouseTransparent="false" prefWidth="200.0" text="Monday" wrapText="true" GridPane.columnIndex="1" GridPane.rowIndex="0" /&gt;
              &lt;TextArea editable="false" mouseTransparent="false" prefWidth="200.0" text="Tuesday" wrapText="true" GridPane.columnIndex="2" GridPane.rowIndex="0" /&gt;
              &lt;TextArea editable="false" mouseTransparent="false" prefWidth="200.0" text="Wednesday" wrapText="true" GridPane.columnIndex="3" GridPane.rowIndex="0" /&gt;
              &lt;TextArea editable="false" mouseTransparent="false" prefWidth="200.0" text="Thursday" wrapText="true" GridPane.columnIndex="4" GridPane.rowIndex="0" /&gt;
              &lt;TextArea editable="false" mouseTransparent="false" prefWidth="200.0" text="Friday" wrapText="true" GridPane.columnIndex="5" GridPane.rowIndex="0" /&gt;
              &lt;TextArea editable="false" mouseTransparent="false" prefWidth="200.0" text="Saturday" wrapText="true" GridPane.columnIndex="6" GridPane.rowIndex="0" /&gt;
              &lt;TextArea editable="false" mouseTransparent="false" prefWidth="200.0" text="Sunday" wrapText="true" GridPane.columnIndex="7" GridPane.rowIndex="0" /&gt;
              &lt;TextArea editable="false" mouseTransparent="false" prefWidth="200.0" text="Monday" wrapText="true" GridPane.columnIndex="1" GridPane.rowIndex="9" /&gt;
              &lt;TextArea editable="false" mouseTransparent="false" prefWidth="200.0" text="Tuesday" wrapText="true" GridPane.columnIndex="2" GridPane.rowIndex="9" /&gt;
              &lt;TextArea editable="false" mouseTransparent="false" prefWidth="200.0" text="Wednesday" wrapText="true" GridPane.columnIndex="3" GridPane.rowIndex="9" /&gt;
              &lt;TextArea editable="false" mouseTransparent="false" prefWidth="200.0" text="Thursday" wrapText="true" GridPane.columnIndex="4" GridPane.rowIndex="9" /&gt;
              &lt;TextArea editable="false" mouseTransparent="false" prefWidth="200.0" text="Friday" wrapText="true" GridPane.columnIndex="5" GridPane.rowIndex="9" /&gt;
              &lt;TextArea editable="false" mouseTransparent="false" prefWidth="200.0" text="Saturday" wrapText="true" GridPane.columnIndex="6" GridPane.rowIndex="9" /&gt;
              &lt;TextArea editable="false" mouseTransparent="false" prefWidth="200.0" text="Sunday" wrapText="true" GridPane.columnIndex="7" GridPane.rowIndex="9" /&gt;
              &lt;Button id="prev" fx:id="prev2" mnemonicParsing="false" onAction="#ClickMinus" prefHeight="30.0" prefWidth="70.0" text="prev" GridPane.columnIndex="8" GridPane.rowIndex="0" /&gt;
              &lt;Button fx:id="next" mnemonicParsing="false" onAction="#ClickPlus" prefHeight="29.999900000002526" prefWidth="70.00009999999747" text="next" GridPane.columnIndex="0" GridPane.rowIndex="9" /&gt;
              &lt;Button fx:id="next2" mnemonicParsing="false" onAction="#ClickPlus" prefHeight="30.0" prefWidth="70.0" text="next" GridPane.columnIndex="8" GridPane.rowIndex="9" /&gt;
              &lt;Button fx:id="prev" mnemonicParsing="false" onAction="#ClickMinus" prefHeight="30.0" prefWidth="70.0" text="prev" GridPane.columnIndex="0" GridPane.rowIndex="0" /&gt;
              &lt;TextArea fx:id="week1" prefWidth="200.0" text="Week x Year x" wrapText="true" GridPane.columnIndex="0" GridPane.rowIndex="2" /&gt;
              &lt;TextArea fx:id="week2" prefWidth="200.0" text="Week x Year x" wrapText="true" GridPane.columnIndex="0" GridPane.rowIndex="4" /&gt;
              &lt;TextArea fx:id="week4" prefWidth="200.0" text="Week x Year x" wrapText="true" GridPane.columnIndex="0" GridPane.rowIndex="8" /&gt;
              &lt;Label  id= "lab1" fx:id="lab1" prefHeight="40.000099999997474" prefWidth="150.0" text="" GridPane.columnIndex="1" GridPane.rowIndex="1" /&gt;
              &lt;Label prefHeight="44.0" prefWidth="139.0" text="Label" GridPane.columnIndex="2" GridPane.rowIndex="1" /&gt;
              &lt;Label prefHeight="44.0" prefWidth="139.0" text="Label" GridPane.columnIndex="3" GridPane.rowIndex="1" /&gt;
              &lt;Label prefHeight="44.0" prefWidth="139.0" text="Label" GridPane.columnIndex="4" GridPane.rowIndex="1" /&gt;
              &lt;Label prefHeight="44.0" prefWidth="139.0" text="Label" GridPane.columnIndex="5" GridPane.rowIndex="1" /&gt;
              &lt;Label minHeight="14.0" prefHeight="14.0" prefWidth="150.0" text="Label" GridPane.columnIndex="1" GridPane.rowIndex="3" /&gt;
              &lt;Label prefHeight="44.0" prefWidth="139.0" text="Label" GridPane.columnIndex="2" GridPane.rowIndex="3" /&gt;
              &lt;Label prefHeight="44.0" prefWidth="139.0" text="Label" GridPane.columnIndex="3" GridPane.rowIndex="3" /&gt;
              &lt;Label prefHeight="44.0" prefWidth="139.0" text="Label" GridPane.columnIndex="2" GridPane.rowIndex="5" /&gt;
              &lt;Label prefHeight="44.0" prefWidth="139.0" text="Label" GridPane.columnIndex="1" GridPane.rowIndex="5" /&gt;
              &lt;Label prefHeight="44.0" prefWidth="139.0" text="Label" GridPane.columnIndex="3" GridPane.rowIndex="5" /&gt;
              &lt;Label prefHeight="44.0" prefWidth="139.0" text="Label" GridPane.columnIndex="4" GridPane.rowIndex="5" /&gt;
              &lt;Label prefHeight="44.0" prefWidth="139.0" text="Label" GridPane.columnIndex="4" GridPane.rowIndex="3" /&gt;
              &lt;Label prefHeight="44.0" prefWidth="139.0" text="Label" GridPane.columnIndex="5" GridPane.rowIndex="3" /&gt;
              &lt;Label prefHeight="44.0" prefWidth="139.0" text="Label" GridPane.columnIndex="5" GridPane.rowIndex="5" /&gt;
              &lt;Label prefHeight="533.0" prefWidth="70.0" text="Label" GridPane.columnIndex="1" GridPane.rowIndex="7" /&gt;
              &lt;Label prefHeight="44.0" prefWidth="139.0" text="Label" GridPane.columnIndex="2" GridPane.rowIndex="7" /&gt;
              &lt;Label prefHeight="44.0" prefWidth="139.0" text="Label" GridPane.columnIndex="6" GridPane.rowIndex="1" /&gt;
              &lt;Label prefHeight="44.0" prefWidth="139.0" text="Label" GridPane.columnIndex="7" GridPane.rowIndex="1" /&gt;
              &lt;Label prefHeight="44.0" prefWidth="139.0" text="Label" GridPane.columnIndex="6" GridPane.rowIndex="3" /&gt;
              &lt;Label prefHeight="44.0" prefWidth="139.0" text="Label" GridPane.columnIndex="3" GridPane.rowIndex="7" /&gt;
              &lt;Label prefHeight="44.0" prefWidth="139.0" text="Label" GridPane.columnIndex="4" GridPane.rowIndex="7" /&gt;
              &lt;Label prefHeight="44.0" prefWidth="139.0" text="Label" GridPane.columnIndex="5" GridPane.rowIndex="7" /&gt;
              &lt;Label prefHeight="44.0" prefWidth="139.0" text="Label" GridPane.columnIndex="6" GridPane.rowIndex="5" /&gt;
              &lt;Label prefHeight="44.0" prefWidth="139.0" text="Label" GridPane.columnIndex="6" GridPane.rowIndex="7" /&gt;
              &lt;Label prefHeight="44.0" prefWidth="139.0" text="Label" GridPane.columnIndex="7" GridPane.rowIndex="7" /&gt;
              &lt;Label prefHeight="44.0" prefWidth="87.0" text="Label" GridPane.columnIndex="7" GridPane.rowIndex="5" /&gt;
              &lt;Label prefHeight="44.0" prefWidth="139.0" text="Label" GridPane.columnIndex="7" GridPane.rowIndex="3" /&gt;
              &lt;TextArea fx:id="week3" prefHeight="100.00009999999747" prefWidth="70.0" text="Week x Year x" wrapText="true" GridPane.columnIndex="0" GridPane.rowIndex="6" /&gt;
              &lt;Button fx:id="start" mnemonicParsing="false" onAction="#ClickStart" prefHeight="30.0" prefWidth="70.0" text="Start" GridPane.columnIndex="0" GridPane.rowIndex="1" /&gt;
            &lt;/children&gt;
            &lt;columnConstraints&gt;
              &lt;ColumnConstraints hgrow="SOMETIMES" minWidth="10.0" prefWidth="70.0" /&gt;
              &lt;ColumnConstraints hgrow="SOMETIMES" minWidth="10.0" prefWidth="150.0" /&gt;
              &lt;ColumnConstraints hgrow="SOMETIMES" minWidth="10.0" prefWidth="150.0" /&gt;
              &lt;ColumnConstraints hgrow="SOMETIMES" minWidth="10.0" prefWidth="150.0" /&gt;
              &lt;ColumnConstraints hgrow="SOMETIMES" minWidth="10.0" prefWidth="150.0" /&gt;
              &lt;ColumnConstraints hgrow="SOMETIMES" minWidth="10.0" prefWidth="150.0" /&gt;
              &lt;ColumnConstraints hgrow="SOMETIMES" minWidth="10.0" prefWidth="150.0" /&gt;
              &lt;ColumnConstraints hgrow="SOMETIMES" minWidth="10.0" prefWidth="150.0" /&gt;
              &lt;ColumnConstraints hgrow="SOMETIMES" minWidth="10.0" prefWidth="70.0" /&gt;
            &lt;/columnConstraints&gt;
            &lt;rowConstraints&gt;
              &lt;RowConstraints minHeight="10.0" prefHeight="40.0" vgrow="SOMETIMES" /&gt;
              &lt;RowConstraints minHeight="10.0" prefHeight="40.0" vgrow="SOMETIMES" /&gt;
              &lt;RowConstraints minHeight="10.0" prefHeight="100.0" vgrow="SOMETIMES" /&gt;
              &lt;RowConstraints minHeight="10.0" prefHeight="40.0" vgrow="SOMETIMES" /&gt;
              &lt;RowConstraints minHeight="10.0" prefHeight="100.0" vgrow="SOMETIMES" /&gt;
              &lt;RowConstraints minHeight="10.0" prefHeight="40.0" vgrow="SOMETIMES" /&gt;
              &lt;RowConstraints minHeight="10.0" prefHeight="100.0" vgrow="SOMETIMES" /&gt;
              &lt;RowConstraints minHeight="10.0" prefHeight="40.0" vgrow="SOMETIMES" /&gt;
              &lt;RowConstraints minHeight="10.0" prefHeight="100.0" vgrow="SOMETIMES" /&gt;
              &lt;RowConstraints minHeight="10.0" prefHeight="40.0" vgrow="SOMETIMES" /&gt;
            &lt;/rowConstraints&gt;
          &lt;/GridPane&gt;
        &lt;/children&gt;
        &lt;columnConstraints&gt;
          &lt;ColumnConstraints hgrow="SOMETIMES" minWidth="10.0" /&gt;
        &lt;/columnConstraints&gt;
        &lt;rowConstraints&gt;
          &lt;RowConstraints minHeight="10.0" vgrow="SOMETIMES" /&gt;
        &lt;/rowConstraints&gt;
      &lt;/GridPane&gt;
    &lt;/children&gt;
    &lt;columnConstraints&gt;
      &lt;ColumnConstraints hgrow="SOMETIMES" minWidth="10.0" /&gt;
    &lt;/columnConstraints&gt;
    &lt;rowConstraints&gt;
      &lt;RowConstraints minHeight="10.0" vgrow="SOMETIMES" /&gt;
    &lt;/rowConstraints&gt;
  &lt;/GridPane&gt;
  </code></pre>
  
  <p>The problem is that when I run the application and I press my Start button, the label doesn't change to the text given(By default is on 'empty').</p>