jdkのPropertyChangeSupport属性値修正のオブザーバーモード適用

import java.beans.PropertyChangeEvent;
import java.beans.PropertyChangeListener;
import java.beans.PropertyChangeSupport;

public class PropertyChangeSupportTest {
	
	static TestBean testBean = new TestBean();
	
	public static void main(String[] args) {
		PropertyChangeSupport propertyChangeSupport = new PropertyChangeSupport(testBean);
		propertyChangeSupport.addPropertyChangeListener(new PropertyChangeListener(){

			@Override
			public void propertyChange(PropertyChangeEvent evt) {
				if(evt.getPropertyName().equals("name")){
					System.out.println("bean:" + PropertyChangeSupportTest.this.testBean + " field:" + evt.getPropertyName() + " value change,old value:" + evt.getOldValue() + " new value:" + evt.getNewValue());
				}
			}
			
		});
		testBean.setId(111);
		testBean.setName("mike");
		propertyChangeSupport.firePropertyChange("name","","mike"); // ， listener 
	}
	

	public static class TestBean{
		private int id;
		private String name;
		public int getId() {
			return id;
		}
		public void setId(int id) {
			this.id = id;
		}
		public String getName() {
			return name;
		}
		public void setName(String name) {
			this.name = name;
		}
	}
}