com.lf.vfslib.lang

Class JavaUtils

java.lang.Object

com.lf.vfslib.lang.JavaUtils

public class JavaUtils
extends Object

This class holds various methods for common use.

All members of this class are declared public, most are static, too.

Since:

1.6

Author:

Axel Schwolow

Field Summary

Fields

Modifier and Type	Field and Description
static String	LINE_SEPARATOR Provides the linefeed appropriate for the system.

Constructor Summary

Constructors

Constructor and Description
JavaUtils() Constructor method for i18n purposes only.

Method Summary

Modifier and Type	Method and Description
static Object	addToArray(Object array, Object newval) Adds another element to the given array (saves System.arraycopy() calls).
static boolean	elementOf(Object object, Object array) Checks if the given object is element of the given array (equals).
static Class	mapToPrimitive(Class clazz) Provides the associated primitive type (Integer ...

Methods inherited from class java.lang.Object

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

Field Detail

LINE_SEPARATOR

public static final String LINE_SEPARATOR

Provides the linefeed appropriate for the system.

Constructor Detail

JavaUtils

public JavaUtils()
          throws InstantiationException

Constructor method for i18n purposes only.

Throws:

InstantiationException - Error indication

Method Detail

addToArray

public static Object addToArray(Object array,
                                Object newval)

Adds another element to the given array (saves System.arraycopy() calls).

Parameters:

array - Target array of arbitrary type

newval - Element to add, may be null

Returns:

Expanded array

Throws:

IllegalArgumentException - Parameters are invalid

elementOf

public static boolean elementOf(Object object,
                                Object array)

Checks if the given object is element of the given array (equals).

Parameters:

object - The object to be checked

array - The array to check against

Returns:

Is the object element of the array?

Throws:

NullPointerException - If object and/or array is null

mapToPrimitive

public static Class mapToPrimitive(Class clazz)

Provides the associated primitive type (Integer ... int).

The types boolean, byte, char, short, int, long, float, double, and void are supported.

Parameters:

clazz - Class to be mapped

Returns:

Primitive type or value of clazz if not available