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import java.beans.PropertyChangeEvent;
import java.beans.PropertyChangeListener;
import java.beans.PropertyChangeSupport;
import java.io.Serializable;
public class Main {
public static void main(String[] argv) throws Exception {
MyBean bean = new MyBean();
bean.setName("A");
bean.setName("B");
bean.setName("C");
}
}
class MyBean implements PropertyChangeListener, Serializable {
private Long id;
private String name;
private PropertyChangeSupport pcs = new PropertyChangeSupport(this);
public MyBean() {
pcs.addPropertyChangeListener(this);
}
public void propertyChange(PropertyChangeEvent evt) {
System.out.println("Name = " + evt.getPropertyName());
System.out.println("Old Value = " + evt.getOldValue());
System.out.println("New Value = " + evt.getNewValue());
}
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
String oldValue = this.name;
this.name = name;
pcs.firePropertyChange("name", oldValue, name);
}
}
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