Question

I’ve wrote a simple Javafx application which starts a new thread and it works OK from Netbeans.
But I’m getting following warning during compilation:

explicit use of threads is not supported

Does it mean that it might now work in all possible devices like mobile phones or browser?

Answer 1

JavaFX itself must run on the main JavaFX thread, so starting a Thread directly from JavaFX is not currently supported. However, you can create a Java class that spawns a Thread. So, your JavaFX class calls the Java class that then starts a Thread.

Calling back to JavaFX from a Java thread, you need to be on the main JavaFX thread. An example of how to do this is:

import com.sun.javafx.runtime.Entry;
Entry.deferAction( new Runnable() {
                    @Override
                    public void run() {
                        fxListener.onMessage(copy);
                    }
                } );

You should not manipulate the JavaFX objects directly from Java. If you do it from Java, you need to use the javafx.reflect classes.