Class Comparators

java.lang.Object

org.springframework.util.comparator.Comparators

public abstract class Comparators
extends Object

Convenient entry point with generically typed factory methods for common Spring Comparator variants.

Since:

5.0

Author:

Juergen Hoeller

Constructor Summary

Constructors

Constructor	Description
Comparators()

Method Summary

Modifier and Type	Method	Description
static <T> Comparator<T>	comparable()	Return a Comparable adapter.
static <T> Comparator<T>	nullsHigh()	Return a Comparable adapter which accepts null values and sorts them higher than non-null values.
static <T> Comparator<T>	nullsHigh(Comparator<T> comparator)	Return a decorator for the given comparator which accepts null values and sorts them higher than non-null values.
static <T> Comparator<T>	nullsLow()	Return a Comparable adapter which accepts null values and sorts them lower than non-null values.
static <T> Comparator<T>	nullsLow(Comparator<T> comparator)	Return a decorator for the given comparator which accepts null values and sorts them lower than non-null values.

Methods inherited from class Object

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

Constructor Details

Comparators

public Comparators()

Method Details

comparable

public static <T> Comparator<T> comparable()

Return a Comparable adapter.

See Also:

• Comparator.naturalOrder()

nullsLow

public static <T> Comparator<T> nullsLow()

Return a Comparable adapter which accepts null values and sorts them lower than non-null values.

See Also:

• Comparator.nullsFirst(Comparator)

nullsLow

public static <T> Comparator<T> nullsLow(Comparator<T> comparator)

Return a decorator for the given comparator which accepts null values and sorts them lower than non-null values.

See Also:

• Comparator.nullsFirst(Comparator)

nullsHigh

public static <T> Comparator<T> nullsHigh()

Return a Comparable adapter which accepts null values and sorts them higher than non-null values.

See Also:

• Comparator.nullsLast(Comparator)

nullsHigh

public static <T> Comparator<T> nullsHigh(Comparator<T> comparator)

Return a decorator for the given comparator which accepts null values and sorts them higher than non-null values.

See Also:

• Comparator.nullsLast(Comparator)