在bean中实现以下方法，并在set方法中调用firePropertyChange方法。

Bean文件例子如下：

package testdbrw;import java.beans.PropertyChangeListener;
import java.beans.PropertyChangeSupport;public class ClassMate {private final PropertyChangeSupport propertyChangeSupport = new PropertyChangeSupport(this);String name;String email;String phone;String idont;public String getName() {return name;}/** * 设置name * @param name name */public void setName(String newname) {String oldValue = name;name = newname;firePropertyChange("name", oldValue, name);}/** * 获取email * @return email email */public String getEmail() {return email;}/** * 设置email * @param email email */public void setEmail(String email) {this.email = email;}/** * 获取phone * @return phone phone */public String getPhone() {return phone;}/** * 设置phone * @param phone phone */public void setPhone(String phone) {this.phone = phone;}/** * 获取idont * @return idont idont */public String getIdont() {return idont;}/** * 设置idont * @param idont idont */public void setIdont(String idont) {this.idont = idont;}public void addPropertyChangeListener(PropertyChangeListener listener) {propertyChangeSupport.addPropertyChangeListener(listener);}public void addPropertyChangeListener(String propertyName,PropertyChangeListener listener) {propertyChangeSupport.addPropertyChangeListener(propertyName, listener);}public void removePropertyChangeListener(PropertyChangeListener listener) {propertyChangeSupport.removePropertyChangeListener(listener);}public void removePropertyChangeListener(String propertyName,PropertyChangeListener listener) {propertyChangeSupport.removePropertyChangeListener(propertyName,listener);}protected void firePropertyChange(String propertyName, Object oldValue,Object newValue) {propertyChangeSupport.firePropertyChange(propertyName, oldValue,newValue);}
}

数据绑定的example地址：

http://help.eclipse.org/kepler/index.jsp?topic=%2Forg.eclipse.wb.doc.user%2Fhtml%2Findex.html