Mastering JavaFX 10

Understanding KeyFrame and KeyValue

KeyFrame works tightly with the Duration class, which is responsible for measuring time intervals. The Duration API is straightforward—you choose a time unit, how many of them you need, and how to combine them. See the following examples:

Duration.seconds(5);Duration.hours(1).add(Duration.minutes(15));Duration.valueOf("10ms");new Duration(100); // default unit is millisecondsDuration.ZERO;

For a specified Duration, you can select one or several KeyValue objects. KeyValue takes two parameters—the property you want to set and a value of the corresponding type.

Note that you don't have to set initial values in the first KeyFrame with Duration.ZERO—if they are missing, Timeframe will use the current values ...