net.sf.sasl.common.helper
Class CompareToHelper

java.lang.Object
  net.sf.sasl.common.helper.CompareToHelper

public class CompareToHelper
extends Object

Class offers helper operations for object comparison.

Since:

0.0.2 (sasl-common-library)

Author:

Philipp Förmer

Constructor Summary

CompareToHelper()

Method Summary

<T extends Comparable<T>> int

compareTo(T one, T two) Compares one with two, without causing null pointer exceptions, if one or two is null.

Methods inherited from class java.lang.Object

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

Constructor Detail

CompareToHelper

public CompareToHelper()

Method Detail

compareTo

public <T extends Comparable<T>> int compareTo(T one,
                                               T two)

Compares one with two, without causing null pointer exceptions, if one or two is null. The return value is:

• -1, if one is null and two is not null, or signum(one.compareTo(two))=-1
• 0, if one and two are both null, or signum(one.compareTo(two))=0
• 1, if one is not null and two is null, or signum(one.compareTo(two))=1

Type Parameters:

T -

Parameters:

one - null or non null.

two - null or non null.

Returns:

-1, 0 or 1.

Since:

0.0.2 (sasl-common-library)