Java认证模考试题（十）

文章作者 100test 发表时间 2007:03:14 17:02:42
来源 100Test.Com百考试题网

Question: 48

A Button is positioned in a Frame. Its size is not affected when the Frame is resized. Which layout manager should be used?

A. FlowLayout

B. CardLayout

C. North and South of BorderLayout

D. East and West of BorderLayout

E. GridLayout

Explanation:

The size of the components is not constrained by the FlowLayout manager. When the area is resized the size of these components is not changed.

Correct Answer: A 48 of 60

Question: 49

Which methods can get the event source in the WindowEvent?

A. getFrame()

B. getID()

C. getSource()

D. getWindow()

Explanation:

The methods getSource() and getWindow() can be used to get the event sources of the window events.

Correct Answer: C,D 49 of 60

Question: 50

Which statements of the event listener are true?

A. Multiple listeners can be attached to one component.

B. Only one listener can be attached to one component.

C. One listener can receive and process the events from multiple components.

D. One listener can receive and process the events from only one component.

Explanation:

One component can registers one or more listeners. One listener can be registered by multiple components. After being registered the listener can receive and process the events from these components.

Correct Answer: A,C 50 of 60