cn.hutool.core.comparator

Class ComparableComparator<E extends Comparable<? super E>>

java.lang.Object

cn.hutool.core.comparator.ComparableComparator<E>

Type Parameters:

E - 比较对象类型

All Implemented Interfaces:

Serializable, Comparator<E>

public class ComparableComparator<E extends Comparable<? super E>>
extends Object
implements Comparator<E>, Serializable

针对 Comparable对象的默认比较器

Since:

3.0.7

Author:

Looly

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
static ComparableComparator	INSTANCE 单例

Constructor Summary

Constructors

Constructor and Description
ComparableComparator() 构造

Method Summary

Modifier and Type	Method and Description
int	compare(E obj1, E obj2) 比较两个Comparable对象
boolean	equals(Object object)
int	hashCode()

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Comparator

comparing, comparing, comparingDouble, comparingInt, comparingLong, naturalOrder, nullsFirst, nullsLast, reversed, reverseOrder, thenComparing, thenComparing, thenComparing, thenComparingDouble, thenComparingInt, thenComparingLong

Field Detail

INSTANCE

public static final ComparableComparator INSTANCE

单例

Constructor Detail

ComparableComparator

public ComparableComparator()

构造

Method Detail

compare

public int compare(E obj1,
                   E obj2)

比较两个Comparable对象

 obj1.compareTo(obj2)
 

Specified by:

compare in interface Comparator<E extends Comparable<? super E>>

Parameters:

obj1 - 被比较的第一个对象

obj2 - the second object to compare

Returns:

obj1小返回负数，大返回正数，否则返回0

Throws:

NullPointerException - obj1为null或者比较中抛出空指针异常

hashCode

public int hashCode()

Overrides:

hashCode in class Object

equals

public boolean equals(Object object)

Specified by:

equals in interface Comparator<E extends Comparable<? super E>>

Overrides:

equals in class Object