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com.fm.rss.comparator
Class RssItemComparator  

java.lang.Object
  com.fm.rss.comparator.RssItemComparator

All Implemented Interfaces:

java.util.Comparator

Direct Known Subclasses:

rssAuthorComparator, rssDateComparator, rssSubjectComparator, rssTitleComparator

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public abstract class RssItemComparator

extends java.lang.Object

implements java.util.Comparator

Base class for rss items comparators

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Constructor Summary

RssItemComparator()

 

Method Summary
abstract  int	compare(java.lang.Object o1, java.lang.Object o2)           Return an integer that is negative, zero or positive depending on whether the first argument is less than, equal to or greater than the second according to this ordering.
abstract  boolean	equals(java.lang.Object o)           Return true if the object is equal to this object.

 

Methods inherited from class java.lang.Object

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

 

Constructor Detail

RssItemComparator

public RssItemComparator()

Method Detail

compare

public abstract int compare(java.lang.Object o1,
                            java.lang.Object o2)

Description copied from interface: java.util.Comparator

Return an integer that is negative, zero or positive depending on whether the first argument is less than, equal to or greater than the second according to this ordering. This method should obey the following contract:

• if compare(a, b) < 0 then compare(b, a) > 0
• if compare(a, b) throws an exception, so does compare(b, a)
• if compare(a, b) < 0 and compare(b, c) < 0 then compare(a, c) < 0
• if compare(a, b) == 0 then compare(a, c) and compare(b, c) must have the same sign

To be consistent with equals, the following additional constraint is in place:

• if a.equals(b) or both a and b are null, then compare(a, b) == 0.

Although it is permissible for a comparator to provide an order inconsistent with equals, that should be documented.

Specified by:

compare in interface java.util.Comparator

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equals

public abstract boolean equals(java.lang.Object o)

Description copied from interface: java.util.Comparator

Return true if the object is equal to this object. To be considered equal, the argument object must satisfy the constraints of Object.equals(), be a Comparator, and impose the same ordering as this Comparator. The default implementation inherited from Object is usually adequate.

Specified by:

equals in interface java.util.Comparator

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Overview  Package   Class  Use  Deprecated  Index
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