import java.beans.*;
import java.io.Serializable;

/**
 * Simple replicatable object example. This is a JavaBean with a single
 * (String) property, "value".
 */
public class TestBean implements Serializable {
    /**
     * Our value
     */
    private String value = null;

    /**
     * Registered property change listeners. (This is a standard 
     * utility class in java.beans)
     */
    private PropertyChangeSupport listeners = null;

    public TestBean() {
	listeners = new PropertyChangeSupport(this);
    }

    public void setValue(String value) {
	Object old = this.value;
	this.value = value;
	listeners.firePropertyChange("value", old, value);
    }

    public String getValue() {
	return value;
    }

    public void addPropertyChangeListener(PropertyChangeListener l) {
	listeners.addPropertyChangeListener(l);
    }
    public void removePropertyChangeListener(PropertyChangeListener l) {
	listeners.removePropertyChangeListener(l);
    }
}