Class Helpers.NullsBefore
- java.lang.Object
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- com.google.common.collect.testing.Helpers.NullsBefore
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- All Implemented Interfaces:
java.io.Serializable
,java.util.Comparator<java.lang.String>
- Direct Known Subclasses:
Helpers.NullsBeforeB
,Helpers.NullsBeforeTwo
- Enclosing class:
- Helpers
public abstract static class Helpers.NullsBefore extends java.lang.Object implements java.util.Comparator<java.lang.String>, java.io.Serializable
Compares strings in natural order except that null comes immediately before a given value. This works better than Ordering.natural().nullsFirst() because, if null comes before all other values, it lies outside the submap/submultiset ranges we test, and the variety of tests that exercise null handling fail on those subcollections.- See Also:
- Serialized Form
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Constructor Summary
Constructors Modifier Constructor Description protected
NullsBefore(java.lang.String justAfterNull)
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description int
compare(java.lang.String lhs, java.lang.String rhs)
boolean
equals(java.lang.Object obj)
int
hashCode()
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Method Detail
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compare
public int compare(java.lang.String lhs, java.lang.String rhs)
- Specified by:
compare
in interfacejava.util.Comparator<java.lang.String>
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equals
public boolean equals(java.lang.Object obj)
- Specified by:
equals
in interfacejava.util.Comparator<java.lang.String>
- Overrides:
equals
in classjava.lang.Object
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hashCode
public int hashCode()
- Overrides:
hashCode
in classjava.lang.Object
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