ch.bind.philib.lang
Class CompareUtil

java.lang.Object
  ch.bind.philib.lang.CompareUtil

public abstract class CompareUtil
extends Object

Provides helper methods for object comparison.

Author:

Philipp Meinen

Constructor Summary

protected

CompareUtil()

Method Summary

static <T> int	compare(Comparable<T> a, T b)
static int	diff(boolean a, boolean b)
static int	diff(byte a, byte b)
static int	diff(char a, char b)
static int	diff(double a, double b)
static int	diff(float a, float b)
static int	diff(int a, int b)
static int	diff(long a, long b)
static int	diff(short a, short b)
static boolean	equals(Object a, Object b) A null-safe equality checking method. results:
static int	normalize(int diff)
static int	normalize(long diff)

Methods inherited from class java.lang.Object

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

Constructor Detail

CompareUtil

protected CompareUtil()

Method Detail

equals

public static boolean equals(Object a,
                             Object b)

A null-safe equality checking method.
results:

  a / b | null  | a           |
 ------------------------------
  null  | true  | false       |
     b  | false | a.equals(b) |
 

Parameters:

a - -

b - -

Returns:

see above

compare

public static <T> int compare(Comparable<T> a,
                              T b)

normalize

public static final int normalize(int diff)

normalize

public static final int normalize(long diff)

diff

public static int diff(boolean a,
                       boolean b)

diff

public static final int diff(byte a,
                             byte b)

diff

public static final int diff(char a,
                             char b)

diff

public static final int diff(short a,
                             short b)

diff

public static final int diff(int a,
                             int b)

diff

public static final int diff(long a,
                             long b)

diff

public static final int diff(float a,
                             float b)

diff

public static final int diff(double a,
                             double b)