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Which statements concerning the event model of the AWT are true？（）
- A、At most one listener of each type can be registered with a component.
- B、Mouse motion listeners can be registered on a List instance.
- C、There exists a class named ContainerEvent in package java.awt.event.
- D、There exists a class named MouseMotionEvent in package java.awt.event.
- E、There exists a class named ActionAdapter in package java.awt.event.
参考答案
更多 “Which statements concerning the event model of the AWT are true？（） A、At most one listener of each type can be registered with a component.B、Mouse motion listeners can be registered on a List instance.C、There exists a class named ContainerEvent in package java.awt.event.D、There exists a class named MouseMotionEvent in package java.awt.event.E、There exists a class named ActionAdapter in package java.awt.event.” 相关考题
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单选题Which statement is true about mouse events? （）A
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Double-clicking a mouse button can potentially fire six mouse event triggers. C
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多选题Which two statements are true about a job chain？（）AA job chain can contain a nested chain of jobsBThe jobs in a job chain cannot have more than one dependencyCA job of the CHAIN type can be run using event-based or time-based schedulesDThe jobs in a job chain can be executed only by using the events generated by the Scheduler
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单选题package foo； public class Outer { public static class Inner { } } Which statement is true？（）A
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多选题Which statements are true regarding listeners（）AListeners use only the TCP/IP protocol.BMultiple listener processes can run simultaneously on a host.CMultiple database instances can be registered with a single listener.DThe listener-related errors can be traced only at the administrative level.EOnly one database instance can be registered with a single listener at any time
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单选题Which statements concerning the switch construct are true？（）A
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The keyword continue can never occur within the body of a switch statement.D
No case label may follow a default label within a single switch statement.E
A character literal can be used as a value for a case label.
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