Using ListProperty in JavaFX

I define a class with a list in it. I am trying to initialize a list in the constructor with the list passed:

public class Person { public IntegerProperty id; public ListProperty<Priority> choice; public Person(int id, List<Priority> list) { this.id = new SimpleIntegerProperty(id); this.choice = new SimpleListProperty<Priority>(); for (int i = 0; i < 5; i++) { this.choice.add(list.get(i)); } } public IntegerProperty idProperty() { return id; } public ListProperty<Priority> choiceProperty() { return choice; } } 

The Priority class consists of two fields and their getters:

 public IntegerProperty rate; public StringProperty speciality; 

Could it be that I'm not using ListProperty ?

When I try to create an object:

 Exception in Application start method Exception in thread "main" java.lang.RuntimeException: Exception in Application start method at com.sun.javafx.application.LauncherImpl.launchApplication1(LauncherImpl.java:403) at com.sun.javafx.application.LauncherImpl.access$000(LauncherImpl.java:47) at com.sun.javafx.application.LauncherImpl$1.run(LauncherImpl.java:115) at java.lang.Thread.run(Thread.java:722) Caused by: java.lang.UnsupportedOperationException at java.util.AbstractList.add(AbstractList.java:148) at java.util.AbstractList.add(AbstractList.java:108) at java.util.AbstractCollection.addAll(AbstractCollection.java:334) at javafx.beans.binding.ListExpression.addAll(ListExpression.java:280) at Person.setAllchoice(Person.java:24) at Person.<init>(Person.java:17) at Distribution.ReadDataFromFile(Distribution.java:85) at Distribution.start(Distribution.java:28) at com.sun.javafx.application.LauncherImpl$5.run(LauncherImpl.java:319) at com.sun.javafx.application.PlatformImpl$5.run(PlatformImpl.java:215) at com.sun.javafx.application.PlatformImpl$4$1.run(PlatformImpl.java:179) at com.sun.javafx.application.PlatformImpl$4$1.run(PlatformImpl.java:176) at java.security.AccessController.doPrivileged(Native Method) at com.sun.javafx.application.PlatformImpl$4.run(PlatformImpl.java:176) at com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:76) at com.sun.glass.ui.gtk.GtkApplication._runLoop(Native Method) at com.sun.glass.ui.gtk.GtkApplication$3$1.run(GtkApplication.java:82) ... 1 more 
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1 answer

Try initializing SimpleListProperty as follows:

 public Person(int id, List<Priority> list) { ... ObservableList<Priority> observableList = FXCollections.observableArrayList(list) this.choice = new SimpleListProperty<Priority>(observableList); } 
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