org.zkoss.lang
Class Primitives

java.lang.Object
  org.zkoss.lang.Primitives

public class Primitives
extends java.lang.Object

Utilities regarding primitive type and its wrapper class.

Author:

henrichen

Constructor Summary

Primitives()

Method Summary

static java.lang.Object	getDefaultValue(java.lang.Class cls) Returns the default value of a primitive class, or null if it is not a primitive class.
static char	getNotation(java.lang.String className) Returns the notation of a primitive class, or ((char)0) if it is not a primitive class.
static boolean	isPrimitive(java.lang.String clsName) Tests whether a class name is a primitive class, e.g., int and void.
static java.lang.Class	toClass(java.lang.String clsName) Converts a primitive from name to the class, or null if it is not a primitive class.
static boolean	toPrimitive(java.lang.Boolean obj) Convert Boolean object to primitive boolean.
static byte	toPrimitive(java.lang.Byte obj) Convert Byte object to primitive byte.
static char	toPrimitive(java.lang.Character obj) Convert Character object to primitive char.
static java.lang.Class	toPrimitive(java.lang.Class wrapper) Returns the primitive class of the giving wrapper class, or null if it is not a wrapper class.
static double	toPrimitive(java.lang.Double obj) Convert Double object to primitive double.
static float	toPrimitive(java.lang.Float obj) Convert Float object to primitive float.
static int	toPrimitive(java.lang.Integer obj) Convert Integer object to primitive int.
static long	toPrimitive(java.lang.Long obj) Convert Long object to primitive long.
static short	toPrimitive(java.lang.Short obj) Convert Short object to primitive short.
static java.lang.Boolean	toWrapper(boolean obj) Convert primitive boolean to Boolean.
static java.lang.Byte	toWrapper(byte obj) Convert primitive byte to Byte.
static java.lang.Character	toWrapper(char obj) Convert primitive char to Character.
static java.lang.Class	toWrapper(java.lang.Class primitive) Returns the wrapper class of a primitive class, or null if it is not a primitive class.
static java.lang.Double	toWrapper(double obj) Convert primitive double to Double.
static java.lang.Float	toWrapper(float obj) Convert primitive float to Float.
static java.lang.Integer	toWrapper(int obj) Convert primitive int to Integer.
static java.lang.Long	toWrapper(long obj) Convert primitive long to Long.
static java.lang.Short	toWrapper(short obj) Convert primitive short to Short.

Methods inherited from class java.lang.Object

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

Constructor Detail

Primitives

public Primitives()

Method Detail

toPrimitive

public static final boolean toPrimitive(java.lang.Boolean obj)

Convert Boolean object to primitive boolean.

toWrapper

public static final java.lang.Boolean toWrapper(boolean obj)

Convert primitive boolean to Boolean.

toPrimitive

public static final byte toPrimitive(java.lang.Byte obj)

Convert Byte object to primitive byte.

toWrapper

public static final java.lang.Byte toWrapper(byte obj)

Convert primitive byte to Byte.

toPrimitive

public static final char toPrimitive(java.lang.Character obj)

Convert Character object to primitive char.

toWrapper

public static final java.lang.Character toWrapper(char obj)

Convert primitive char to Character.

toPrimitive

public static final double toPrimitive(java.lang.Double obj)

Convert Double object to primitive double.

toWrapper

public static final java.lang.Double toWrapper(double obj)

Convert primitive double to Double.

toPrimitive

public static final float toPrimitive(java.lang.Float obj)

Convert Float object to primitive float.

toWrapper

public static final java.lang.Float toWrapper(float obj)

Convert primitive float to Float.

toPrimitive

public static final int toPrimitive(java.lang.Integer obj)

Convert Integer object to primitive int.

toWrapper

public static final java.lang.Integer toWrapper(int obj)

Convert primitive int to Integer.

toPrimitive

public static final long toPrimitive(java.lang.Long obj)

Convert Long object to primitive long.

toWrapper

public static final java.lang.Long toWrapper(long obj)

Convert primitive long to Long.

toPrimitive

public static final short toPrimitive(java.lang.Short obj)

Convert Short object to primitive short.

toWrapper

public static final java.lang.Short toWrapper(short obj)

Convert primitive short to Short.

getNotation

public static final char getNotation(java.lang.String className)

Returns the notation of a primitive class, or ((char)0) if it is not a primitive class. Example, I for int, Z for boolean...

getDefaultValue

public static final java.lang.Object getDefaultValue(java.lang.Class cls)

Returns the default value of a primitive class, or null if it is not a primitive class. Example, getDefaultValue(int.class) returns Integer(0).

toClass

public static final java.lang.Class toClass(java.lang.String clsName)

Converts a primitive from name to the class, or null if it is not a primitive class.

Example, toClass("int") returns int.class.

toPrimitive

public static final java.lang.Class toPrimitive(java.lang.Class wrapper)

Returns the primitive class of the giving wrapper class, or null if it is not a wrapper class.

Example, toPrimitive(Integer.class) returns int.class.

toWrapper

public static final java.lang.Class toWrapper(java.lang.Class primitive)

Returns the wrapper class of a primitive class, or null if it is not a primitive class.

Example, toWrapper(int.class) return Integer.class.

isPrimitive

public static final boolean isPrimitive(java.lang.String clsName)

Tests whether a class name is a primitive class, e.g., int and void.