org.springframework.util.comparator
Class BooleanComparator
java.lang.Object
org.springframework.util.comparator.BooleanComparator
- All Implemented Interfaces:
- java.io.Serializable, java.util.Comparator<java.lang.Boolean>
public final class BooleanComparator
- extends java.lang.Object
- implements java.util.Comparator<java.lang.Boolean>, java.io.Serializable
A Comparator for Boolean objects that can sort either true or false first.
- Since:
- 1.2.2
- Author:
- Keith Donald
- See Also:
- Serialized Form
Constructor Summary |
BooleanComparator(boolean trueLow)
Create a BooleanComparator that sorts boolean values based on
the provided flag. |
Method Summary |
int |
compare(java.lang.Boolean v1,
java.lang.Boolean v2)
|
boolean |
equals(java.lang.Object obj)
|
int |
hashCode()
|
java.lang.String |
toString()
|
Methods inherited from class java.lang.Object |
clone, finalize, getClass, notify, notifyAll, wait, wait, wait |
TRUE_LOW
public static final BooleanComparator TRUE_LOW
- A shared default instance of this comparator, treating true lower
than false.
TRUE_HIGH
public static final BooleanComparator TRUE_HIGH
- A shared default instance of this comparator, treating true higher
than false.
trueLow
private final boolean trueLow
BooleanComparator
public BooleanComparator(boolean trueLow)
- Create a BooleanComparator that sorts boolean values based on
the provided flag.
Alternatively, you can use the default shared instances:
BooleanComparator.TRUE_LOW
and
BooleanComparator.TRUE_HIGH
.
- Parameters:
trueLow
- whether to treat true as lower or higher than false- See Also:
TRUE_LOW
,
TRUE_HIGH
compare
public int compare(java.lang.Boolean v1,
java.lang.Boolean v2)
- Specified by:
compare
in interface java.util.Comparator<java.lang.Boolean>
equals
public boolean equals(java.lang.Object obj)
- Specified by:
equals
in interface java.util.Comparator<java.lang.Boolean>
- Overrides:
equals
in class java.lang.Object
hashCode
public int hashCode()
- Overrides:
hashCode
in class java.lang.Object
toString
public java.lang.String toString()
- Overrides:
toString
in class java.lang.Object