https://docs.oracle.com/javase/jp/9/docs/api/java/beans/VetoableChangeListenerProxy.html
VetoableChangeListenerProxy (Java SE 9 & JDK 9 )
java sejdk
https://docs.oracle.com/javase/jp/6/api/java/beans/VetoableChangeListenerProxy.html
VetoableChangeListenerProxy (Java Platform SE 6)
java platformse