com.phloc.commons.equals

Class EqualsUtils

java.lang.Object

com.phloc.commons.equals.EqualsUtils

@Immutable
public final class EqualsUtils
extends Object

A small helper class that provides helper methods for easy equals method generation

Author:

Philip Helger

Method Summary

Methods

Modifier and Type	Method and Description
static boolean	equals(boolean aObj1, boolean aObj2)
static boolean	equals(byte aObj1, byte aObj2)
static boolean	equals(char aObj1, char aObj2)
static boolean	equals(Collection<?> aColl1, Collection<?> aColl2) Tells whether two passed collections are equal in terms of having the same content.
static boolean	equals(double aObj1, double aObj2) Check if two double values are equal.
static boolean	equals(float aObj1, float aObj2) Check if two float values are equal.
static boolean	equals(int aObj1, int aObj2)
static boolean	equals(long aObj1, long aObj2)
static boolean	equals(Object aObj1, Object aObj2)
static boolean	equals(short aObj1, short aObj2)
static ITriState	equalsTrivial(Object aThis, Object aOther) Performs the trivial equals checks returning true for identical objects and false for objects not having the same implementation class.
static boolean	nullSafeEqualsIgnoreCase(String sObj1, String sObj2)

Methods inherited from class java.lang.Object

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

Method Detail

equals

public static boolean equals(boolean aObj1,
             boolean aObj2)

equals

public static boolean equals(byte aObj1,
             byte aObj2)

equals

public static boolean equals(char aObj1,
             char aObj2)

equals

public static boolean equals(double aObj1,
             double aObj2)

Check if two double values are equal. This is necessary, because in some cases, the "==" operator returns wrong results.

Parameters:

aObj1 - First double

aObj2 - Second double

Returns:

true if they are equal.

equals

public static boolean equals(float aObj1,
             float aObj2)

Check if two float values are equal. This is necessary, because in some cases, the "==" operator returns wrong results.

Parameters:

aObj1 - First float

aObj2 - Second float

Returns:

true if they are equal.

equals

public static boolean equals(int aObj1,
             int aObj2)

equals

public static boolean equals(long aObj1,
             long aObj2)

equals

public static boolean equals(short aObj1,
             short aObj2)

equals

public static boolean equals(@Nullable
             Object aObj1,
             @Nullable
             Object aObj2)

nullSafeEqualsIgnoreCase

public static boolean nullSafeEqualsIgnoreCase(@Nullable
                               String sObj1,
                               @Nullable
                               String sObj2)

equalsTrivial

@Nonnull
public static ITriState equalsTrivial(@Nonnull
                              Object aThis,
                              @Nullable
                              Object aOther)

Performs the trivial equals checks returning true for identical objects and false for objects not having the same implementation class. All other cases will result in undefined and must be further compared in custom implementations

Parameters:

aThis - must not be null!

aOther - may be null

Returns:

a ITriState representing the trivial equality, never null!

equals

public static boolean equals(@Nullable
             Collection<?> aColl1,
             @Nullable
             Collection<?> aColl2)

Tells whether two passed collections are equal in terms of having the same content. This implementation treats a null collection same as an empty collection!

Parameters:

aColl1 -

aColl2 -

Returns:

Whether or not the collections have equal content