title: Javafx concatenation of multiple StringProperty
body: <p>Is there a simple way to bind a concatenation of StringProperty objects?</p>
  
  <p>Here is what I want to do:</p>
  
  <pre><code>TextField t1 = new TextField();
  TextField t2 = new TextField();
  
  StringProperty s1 = new SimpleStringProperty();
  Stringproperty s2 = new SimpleStringProperty();
  Stringproperty s3 = new SimpleStringProperty();
  
  s1.bind( t1.textProperty() ); // Binds the text of t1
  s2.bind( t2.textProperty() ); // Binds the text of t2
  
  // What I want to do, theoretically :
  s3.bind( s1.getValue() + " &lt;some Text&gt; " + s2.getValue() );
  </code></pre>
  
  <p>How can I do that?</p>