jsimple.util

Class Utils

java.lang.Object

jsimple.util.Utils

public class Utils
extends java.lang.Object

Created with IntelliJ IDEA.

Since:

1/4/13 2:15 AM

Constructor Summary

Constructors

Constructor and Description
Utils()

Method Summary

Modifier and Type	Method and Description
static byte[]	byteArrayFromBytes(int... bytes) Return an array of bytes containing as elements this method's parameters.
static int	compare(double v1, double v2)
static int	compare(long v1, long v2)
static boolean	equalsNullable(java.lang.Object o1, java.lang.Object o2) Return true if the two objects are equal, according to their equals method.
static long	max(long v1, long v2)
static long	min(long v1, long v2)

Methods inherited from class java.lang.Object

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

Constructor Detail

Utils

public Utils()

Method Detail

byteArrayFromBytes

public static byte[] byteArrayFromBytes(int... bytes)

Return an array of bytes containing as elements this method's parameters. Parameters are ints but they should be in a legal range for a byte (technically -128 to 127, but treating the range like 0-255 also works as expected).

This method exists mostly to avoid casting problems populating a byte[] literals inline--casting issues caused by integer literals always being ints not bytes in Java (and thus requiring a byte cast--compile issue #1) and translated C# always treating hex literals as unsigned and not allowing ones > 127 to be cast to (signed) bytes (compile issue #2). Anyway, that's all avoided just by passing in ints here.

Parameters:

bytes - 0 or more bytes to convert into an array of bytes

Returns:

array of bytes

compare

public static int compare(long v1,
                          long v2)

compare

public static int compare(double v1,
                          double v2)

min

public static long min(long v1,
                       long v2)

max

public static long max(long v1,
                       long v2)

equalsNullable

public static boolean equalsNullable(@Nullable
                                     java.lang.Object o1,
                                     @Nullable
                                     java.lang.Object o2)

Return true if the two objects are equal, according to their equals method. This method allows the objects to be null, returning true if both are null & false if just one is null.

Parameters:

o1 - object 1

o2 - object 2

Returns:

true if both objects are equal or both are null, false otherwise