单项选择题
A.11.5 B.11 C.12 D.13
在J2EE中,在自己编写的Bean中有代码: private PropertyChangeSupport changes=new PropertyChangeSupport(this); changes对象的作用是()
A.使该Bean自动实现方法:addPropertyChangListener和removePropertyChangeListener方法 B.保持属性变化监听者列表,并点火属性变化事件 C.通过内省功能,让该Bean集成Listener D.使该Bean的作用为Listener
A.<%@ taglib URL=”/hello” prefix=”examples”%> B.<%@ taglib URI=”/hello” prefix=”examples”%> C.<%@ taglib url=”/hello” prefix=”examples”%> D.<%@ taglib uri=”/hello” prefix=”examples”%>
A.play(getDocumentBase(),”myAudio/123.au”) B.play(getDocumentBase(),” 123.au”) C.play(getCodeBase(),”myAudio/123.au”) D.play(getCodeBase(),” 123.au”)
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