uk.ac.starlink.datanode.nodes

Class StringComparator

java.lang.Object

uk.ac.starlink.datanode.nodes.StringComparator

All Implemented Interfaces:

Comparator

public class StringComparator
extends Object
implements Comparator

A very simple implementation of the Comparator interface. It is suitable for use on any objects for which the toString method provides a suitable basis for object comparison.

You might think that calling java.text.Collator.getInstance ought to provide much the same thing; however that gives you a compare method which casts to String rather than calling the toString method on its arguments, leading to a ClassCastException in most useful cases. I wonder why it does that?

Version:

$Id$

Author:

Mark Taylor (Starlink)

Constructor Summary

Constructors

Constructor and Description
StringComparator()

Method Summary

Modifier and Type	Method and Description
int	compare(Object o1, Object o2)
boolean	equals(Object obj)

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Comparator

comparing, comparing, comparingDouble, comparingInt, comparingLong, naturalOrder, nullsFirst, nullsLast, reversed, reverseOrder, thenComparing, thenComparing, thenComparing, thenComparingDouble, thenComparingInt, thenComparingLong

Constructor Detail

StringComparator

public StringComparator()

Method Detail

compare

public int compare(Object o1,
                   Object o2)

Specified by:

compare in interface Comparator

equals

public boolean equals(Object obj)

Specified by:

equals in interface Comparator

Overrides:

equals in class Object