StringProperty 示例

以下示例顯示了屬性的宣告（在本例中為 StringProperty），並演示瞭如何向其新增 ChangeListener。

import java.text.MessageFormat;
import javafx.beans.property.SimpleStringProperty;
import javafx.beans.property.StringProperty;
import javafx.beans.value.ChangeListener;
import javafx.beans.value.ObservableValue;

public class Person {

    private final StringProperty name = new SimpleStringProperty();

    public final String getName() {
        return this.name.get();
    }

    public final void setName(String value) {
        this.name.set(value);
    }

    public final StringProperty nameProperty() {
        return this.name;
    }
    
    public static void main(String[] args) {
        Person person = new Person();
        person.nameProperty().addListener(new ChangeListener<String>() {

            @Override
            public void changed(ObservableValue<? extends String> observable, String oldValue, String newValue) {
                System.out.println(MessageFormat.format("The name changed from \"{0}\" to \"{1}\"", oldValue, newValue));
            }
            
        });
        
        person.setName("Anakin Skywalker");
        person.setName("Darth Vader");
    }
    
}