com.sun.tv.si

Class ServiceIteratorImpl

java.lang.Object

com.sun.tv.si.ServiceIteratorImpl

All Implemented Interfaces:

ServiceIterator

public class ServiceIteratorImpl
extends Object
implements ServiceIterator

ServiceIterator permits iteration over an ordered list of Service objects. Applications may use the ServiceIterator interface to browse a ServiceList forward or backward.

Upon initial usage, hasPrevious() will return false and nextService() will return the first Service in the list, if present.

See Also:

ServiceList

Constructor Summary

Constructors

Constructor and Description
ServiceIteratorImpl(Vector list)

Method Summary

Methods

Modifier and Type	Method and Description
boolean	hasNext() Tests if there is a Service in the next position in the list.
boolean	hasPrevious() Tests if there is a Service in the previous position in the list.
Service	nextService() Reports the next Service object in the list.
Service	previousService() Reports the previous Service object in the list.
void	toBeginning() Resets the iterator to the beginning of the list, such that hasPrevious returns false.
void	toEnd() Sets the iterator to the end of the list, such that hasNext returns false.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

ServiceIteratorImpl

public ServiceIteratorImpl(Vector list)

Method Detail

toBeginning

public void toBeginning()

Resets the iterator to the beginning of the list, such that hasPrevious returns false.

Specified by:

toBeginning in interface ServiceIterator

toEnd

public void toEnd()

Sets the iterator to the end of the list, such that hasNext returns false.

Specified by:

toEnd in interface ServiceIterator

nextService

public Service nextService()

Reports the next Service object in the list. This method may be called repeatedly to iterate through the list.

Specified by:

nextService in interface ServiceIterator

Returns:

The Service object at the next position in the list.

Throws:

NoSuchElementException - If the iteration has no next Service.

previousService

public Service previousService()

Reports the previous Service object in the list. This method may be called repeatedly to iterate through the list in reverse order.

Specified by:

previousService in interface ServiceIterator

Returns:

The Service object at the previous position in the list.

Throws:

NoSuchElementException - If the iteration has no previous Service.

hasNext

public boolean hasNext()

Tests if there is a Service in the next position in the list.

Specified by:

hasNext in interface ServiceIterator

Returns:

true if there is a Service in the next position in the list; false otherwise.

hasPrevious

public boolean hasPrevious()

Tests if there is a Service in the previous position in the list.

Specified by:

hasPrevious in interface ServiceIterator

Returns:

true if there is a Service in the previous position in the list; false otherwise.