com.annimon.stream

Class Comparators

java.lang.Object

com.annimon.stream.Comparators

public final class Comparators
extends java.lang.Object

Factory utility class for Comparator.

Since:

0.8.5

Author:

haiyang li

Method Summary

Methods

Modifier and Type	Method and Description
static <T,U extends java.lang.Comparable> java.util.Comparator<T>	comparingBy(Function<? super T,? extends U> keyExtractor)
static <T,U> java.util.Comparator<T>	comparingBy(Function<? super T,? extends U> keyExtractor, java.util.Comparator<? super U> keyComparator)
static <K extends java.lang.Comparable,V> java.util.Comparator<java.util.Map.Entry<K,V>>	comparingByKey()
static <K,V> java.util.Comparator<java.util.Map.Entry<K,V>>	comparingByKey(java.util.Comparator<? super K> cmp)
static <K,V extends java.lang.Comparable> java.util.Comparator<java.util.Map.Entry<K,V>>	comparingByValue()
static <K,V> java.util.Comparator<java.util.Map.Entry<K,V>>	comparingByValue(java.util.Comparator<? super V> cmp)
static <T> java.util.Comparator<T>	comparingDouble(ToDoubleFunction<? super T> keyExtractor)
static <T> java.util.Comparator<T>	comparingInt(ToIntFunction<? super T> keyExtractor)
static <T> java.util.Comparator<T>	comparingLong(ToLongFunction<? super T> keyExtractor)
static <T> java.util.Comparator<T>	naturalOrder()
static <T> java.util.Comparator<T>	nullsFirst()
static <T> java.util.Comparator<T>	nullsFirst(java.util.Comparator<T> cmp)
static <T> java.util.Comparator<T>	nullsLast()
static <T> java.util.Comparator<T>	nullsLast(java.util.Comparator<T> cmp)
static <T,U extends java.lang.Comparable> java.util.Comparator<T>	reversedComparingBy(Function<? super T,? extends U> keyExtractor)
static <K extends java.lang.Comparable,V> java.util.Comparator<java.util.Map.Entry<K,V>>	reversedComparingByKey()
static <K,V extends java.lang.Comparable> java.util.Comparator<java.util.Map.Entry<K,V>>	reversedComparingByValue()
static <T> java.util.Comparator<T>	reversedOrder()
static <T> java.util.Comparator<T>	reversedOrder(java.util.Comparator<T> cmp)

Methods inherited from class java.lang.Object

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

Method Detail

naturalOrder

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

reversedOrder

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

reversedOrder

public static <T> java.util.Comparator<T> reversedOrder(java.util.Comparator<T> cmp)

nullsFirst

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

nullsFirst

public static <T> java.util.Comparator<T> nullsFirst(java.util.Comparator<T> cmp)

nullsLast

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

nullsLast

public static <T> java.util.Comparator<T> nullsLast(java.util.Comparator<T> cmp)

comparingBy

public static <T,U extends java.lang.Comparable> java.util.Comparator<T> comparingBy(Function<? super T,? extends U> keyExtractor)

reversedComparingBy

public static <T,U extends java.lang.Comparable> java.util.Comparator<T> reversedComparingBy(Function<? super T,? extends U> keyExtractor)

comparingBy

public static <T,U> java.util.Comparator<T> comparingBy(Function<? super T,? extends U> keyExtractor,
                                        java.util.Comparator<? super U> keyComparator)

comparingInt

public static <T> java.util.Comparator<T> comparingInt(ToIntFunction<? super T> keyExtractor)

comparingLong

public static <T> java.util.Comparator<T> comparingLong(ToLongFunction<? super T> keyExtractor)

comparingDouble

public static <T> java.util.Comparator<T> comparingDouble(ToDoubleFunction<? super T> keyExtractor)

comparingByKey

public static <K extends java.lang.Comparable,V> java.util.Comparator<java.util.Map.Entry<K,V>> comparingByKey()

reversedComparingByKey

public static <K extends java.lang.Comparable,V> java.util.Comparator<java.util.Map.Entry<K,V>> reversedComparingByKey()

comparingByValue

public static <K,V extends java.lang.Comparable> java.util.Comparator<java.util.Map.Entry<K,V>> comparingByValue()

reversedComparingByValue

public static <K,V extends java.lang.Comparable> java.util.Comparator<java.util.Map.Entry<K,V>> reversedComparingByValue()

comparingByKey

public static <K,V> java.util.Comparator<java.util.Map.Entry<K,V>> comparingByKey(java.util.Comparator<? super K> cmp)

comparingByValue

public static <K,V> java.util.Comparator<java.util.Map.Entry<K,V>> comparingByValue(java.util.Comparator<? super V> cmp)