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org.sablecc.sablecc
Class IntegerComparator  

java.lang.Object
  org.sablecc.sablecc.IntegerComparator

All Implemented Interfaces:

java.util.Comparator

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public class IntegerComparator

extends java.lang.Object

implements java.util.Comparator

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Field Summary
static IntegerComparator	instance

 

Constructor Summary
private	IntegerComparator()

 

Method Summary
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.

 

Methods inherited from class java.lang.Object

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

 

Methods inherited from interface java.util.Comparator

equals

 

Field Detail

instance

public static final IntegerComparator instance

Constructor Detail

IntegerComparator

private IntegerComparator()

Method Detail

compare

public 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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