org.tentackle.common

Class Compare

java.lang.Object

org.tentackle.common.Compare

public class Compare
extends Object

Some handy static methods to compare two Comparables even if one or both are null-pointers.

Author:

harald

Method Summary

Modifier and Type	Method and Description
static <T extends Comparable<? super T>> int	compare(T o1, T o2) Compares two objects. null is being treated as smallest value.
static <T extends Comparable<? super T>> int	compareWithNullLargest(T o1, T o2) Compares two objects. null is being treated as largest value.

Methods inherited from class java.lang.Object

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

Method Detail

compare

public static <T extends Comparable<? super T>> int compare(T o1,
                                                            T o2)

Compares two objects.
null is being treated as smallest value.

Notice the different semantics compared to Objects.compare(java.lang.Object, java.lang.Object, java.util.Comparator) for null-values.

Type Parameters:

T - the class type

Parameters:

o1 - the first object

o2 - the second object

Returns:

a negative integer, zero, or a positive integer as o1 is less than, equal to, or greater than o2.

compareWithNullLargest

public static <T extends Comparable<? super T>> int compareWithNullLargest(T o1,
                                                                           T o2)

Compares two objects.
null is being treated as largest value.

Type Parameters:

T - the class type

Parameters:

o1 - the first object

o2 - the second object

Returns:

a negative integer, zero, or a positive integer as o1 is less than, equal to, or greater than o2.