org.springframework.util.comparator

Class Comparators

java.lang.Object

org.springframework.util.comparator.Comparators

public abstract class Comparators
extends java.lang.Object

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

Since:

5.0

Author:

Juergen Hoeller

Constructor Summary

Constructors

Constructor and Description
Comparators()

Method Summary

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

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

Constructor Detail

Comparators

public Comparators()

Method Detail

comparable

public static <T> java.util.Comparator<T> comparable()

Return a Comparable adapter.

See Also:

ComparableComparator.INSTANCE

nullsLow

public static <T> java.util.Comparator<T> nullsLow()

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

See Also:

NullSafeComparator.NULLS_LOW

nullsLow

public static <T> java.util.Comparator<T> nullsLow(java.util.Comparator<T> comparator)

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

See Also:

NullSafeComparator.NullSafeComparator(boolean)

nullsHigh

public static <T> java.util.Comparator<T> nullsHigh()

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

See Also:

NullSafeComparator.NULLS_HIGH

nullsHigh

public static <T> java.util.Comparator<T> nullsHigh(java.util.Comparator<T> comparator)

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

See Also:

NullSafeComparator.NullSafeComparator(boolean)