多选题Which statements concerning the event model of the AWT are true？（）AAt most one listener of each type can be registered with a component.BMouse motion listeners can be registered on a List instance.CThere exists a class named ContainerEvent in package j

A job chain can contain a nested chain of jobs.

The jobs in a job chain cannot have more than one dependency.

A job of the CHAIN type can be run using event-based or time-based schedules.

The jobs in a job chain can be executed only by using the events generated by the Scheduler

 Compilation fails.

 An instance of the Inner class can be constructed with “new Outer.Inner（）”.

 An instance of the Inner class cannot be constructed outside of package foo.

 An instance of the Inner class can be constructed only from within the Outer class.

 From within the package foo， and instance of the Inner class can be constructed with “new Inner（）”.

At most one listener of each type can be registered with a component.

Mouse motion listeners can be registered on a List instance.

There exists a class named ContainerEvent in package java.awt.event.

There exists a class named MouseMotionEvent in package java.awt.event.

There exists a class named ActionAdapter in package java.awt.event.

when a session is created

after a servlet is destroyed

when a session has timed out

when a cookie has been created

when a servlet has forwarded a request

when a session attribute value is changed

Listeners use only the TCP/IP protocol.

Multiple listener processes can run simultaneously on a host.

Multiple database instances can be registered with a single listener.

The listener-related errors can be traced only at the administrative level.

Only one database instance can be registered with a single listener at any time.

They accept only a single argument

They can be nested only to two levels

Arguments can only be column values or constants

They always return a single result row for every row of a queried table

They can return a data type value different from the one that is referenced

An inner class may be declared as static.

An anonymous inner class can be declared as public.

An anonymous inner class can be declared as private.

An anonymous inner class can extend an abstract class.

An anonymous inner class can be declared as protected.

A job chain can contain a nested chain of jobs

The jobs in a job chain cannot have more than one dependency

A job of the CHAIN type can be run using event-based or time-based schedules

The jobs in a job chain can be executed only by using the events generated by the Scheduler

Listeners use only the TCP/IP protocol.

Multiple listener processes can run simultaneously on a host.

Multiple database instances can be registered with a single listener.

The listener-related errors can be traced only at the administrative level.

Only one database instance can be registered with a single listener at any time

An inner class may be declared as static.

An anonymous inner class can be declared as public.

An anonymous inner class can be declared as private.

An anonymous inner class can extend an abstract class.

An anonymous inner class can be declared as protected.

Multiple listeners can be attached to one component

Only one listener can be attached to one component

One listener can receive and process the events from multiple components

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

FileOutputStream has no constructors matching the given arguments.

An IOExeception will be thrown if a file named data already exists.

An IOExeception will be thrown if a file named data does not already exist.

If a file named data exists， its contents will be reset and overwritten.

If a file named data exists， output will be appended to its current contents.

They can accept only one argument.

They can be nested up to only two levels.

They can return multiple values of more than one data type.

They can be used in SELECT， WHERE， and ORDER BY clauses.

They can modify the data type of the argument that is referenced.

They can accept a column name， expression， variable name， or a user-supplied constant as arguments.

All switch statements must have a default label.

There must be exactly one label for each code segment in a switch statement.

The keyword continue can never occur within the body of a switch statement.

No case label may follow a default label within a single switch statement.

A character literal can be used as a value for a case label.