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Java Source Code / Java Documentation » Ajax » zk » org.zkoss.lang

Source Cross Reference

Class Diagram

Java Document (Java Doc)

java.lang .Object

org.zkoss.lang .Objects

Objects
public class Objects (Code)
	Utilities related to the Object class. author: tomyeh

Field Summary
final public static String	BAR0_STRING The horizontal bar 0 (i.e., .........).
final public static String	BAR1_STRING The horizontal bar 1 (i.e., ---------).
final public static String	BAR2_STRING The horizontal bar 2 (i.e., =========).
final public static Character	NULL_CHARACTER The null character.
final public static char	PATH_SEPARATOR_CHAR The path seperator character that is used to construct a path.
final public static String	PATH_SEPARATOR_STRING The path seperator string that is used to construct a path.
final public static char	SEPARATOR_CHAR A separator char that is from the Unicode reserved area.
final public static char	SEPARATOR_CHAR2 The second separator char that is from the Unicode reserved area.
final public static String	SEPARATOR_STRING A separator char that is from the Unicode reserved area.
final public static Object	UNKNOWN Denotes unknown.
final public static BigDecimal	ZERO_BIG_DECIMAL Represents 0 in big decimal.
final public static BigInteger	ZERO_BIG_INTEGER Represents 0 in big integer.
final public static Byte	ZERO_BYTE The zero integer.
final public static Double	ZERO_DOUBLE The zero double.
final public static Float	ZERO_FLOAT The zero float.
final public static Integer	ZERO_INTEGER The zero integer.
final public static Long	ZERO_LONG The zero long.
final public static Short	ZERO_SHORT The zero short.

Method Summary
final public static Object	clone(Object o) Clones the specified object.
final public static boolean	equals(Object a, Object b) Tests whether two objects are equals. It takes care of the null case.
final public static int	hashCode(boolean[] v) Generates hash codes for an array of boolean.
final public static int	hashCode(byte[] v) Generates hash codes for an array of bytes.
final public static int	hashCode(byte[] v, int len) Generates hash codes for an array of bytes up to the specified length.
final public static int	hashCode(char[] v) Generates hash codes for an array.
final public static int	hashCode(short[] v) Generates hash codes for an array.
final public static int	hashCode(int[] v) Generates hash codes for an array.
final public static int	hashCode(long[] v) Generates hash codes for an array.
final public static int	hashCode(Object o) Returns the object's hash code, or zero if null.
final public static int	nextHashCode(int prevHashVal, int newVal) Returns the next hash value by giving the previous one and a new one.
final public static byte[]	toByteArray(int v) Converts an integer to a big-endian byte array.
final public static byte[]	toByteArray(long v) Converts a long to a big-endian byte array.
final public static byte[]	toByteArray(short v) Converts a short to a big-endian byte array.
final public static byte[]	toByteArray(byte v) Converts a byte to a big-endian byte array.
final public static char[]	toCharArray(Object o) Converts any object to a character array.
final public static String	toString(Object o) Converts any object to a string.

Field Detail

BAR0_STRING
final public static String BAR0_STRING(Code)
	The horizontal bar 0 (i.e., .........).

BAR1_STRING
final public static String BAR1_STRING(Code)
	The horizontal bar 1 (i.e., ---------).

BAR2_STRING
final public static String BAR2_STRING(Code)
	The horizontal bar 2 (i.e., =========).

NULL_CHARACTER
final public static Character NULL_CHARACTER(Code)
	The null character.

PATH_SEPARATOR_CHAR
final public static char PATH_SEPARATOR_CHAR(Code)
	The path seperator character that is used to construct a path. See org.zkoss.i3.ds.Path.

PATH_SEPARATOR_STRING
final public static String PATH_SEPARATOR_STRING(Code)
	The path seperator string that is used to construct a path. See org.zkoss.i3.ds.Path.

SEPARATOR_CHAR
final public static char SEPARATOR_CHAR(Code)
	A separator char that is from the Unicode reserved area.

SEPARATOR_CHAR2
final public static char SEPARATOR_CHAR2(Code)
	The second separator char that is from the Unicode reserved area.

SEPARATOR_STRING
final public static String SEPARATOR_STRING(Code)
	A separator char that is from the Unicode reserved area.

UNKNOWN
final public static Object UNKNOWN(Code)
	Denotes unknown. It is useful if both null and unknown is required.

ZERO_BIG_DECIMAL
final public static BigDecimal ZERO_BIG_DECIMAL(Code)
	Represents 0 in big decimal. The same as org.zkoss.math.BigDecimals.ZERO . See Also: org.zkoss.math.BigDecimals.ONE

ZERO_BIG_INTEGER
final public static BigInteger ZERO_BIG_INTEGER(Code)
	Represents 0 in big integer. Same as org.zkoss.math.BigIntegers.ZERO .

ZERO_BYTE
final public static Byte ZERO_BYTE(Code)
	The zero integer.

ZERO_DOUBLE
final public static Double ZERO_DOUBLE(Code)
	The zero double.

ZERO_FLOAT
final public static Float ZERO_FLOAT(Code)
	The zero float.

ZERO_INTEGER
final public static Integer ZERO_INTEGER(Code)
	The zero integer.

ZERO_LONG
final public static Long ZERO_LONG(Code)
	The zero long.

ZERO_SHORT
final public static Short ZERO_SHORT(Code)
	The zero short.

Method Detail

clone
final public static Object clone(Object o)(Code)
	Clones the specified object. Use clone() if Cloeable. Otherwise, try to serialize/deserialize it by use of MarshalledObject. If o is null, null is returned. exception: SystemException - if failed to clone

equals

final public static boolean equals(Object a, Object b)(Code)

Tests whether two objects are equals.

It takes care of the null case. Thus, it is helpful to implement Object.equals.

Notice: it uses compareTo if BigDecimal is found. So, in this case, a.equals(b) might not be the same as Objects.equals(a, b).

If both a and b are Object[], they are compared item-by-item.

hashCode
final public static int hashCode(boolean[] v)(Code)
	Generates hash codes for an array of boolean. It is suggested to cache the hash code. Parameters: v - the array the hash code

hashCode
final public static int hashCode(byte[] v)(Code)
	Generates hash codes for an array of bytes. It is suggested to cache the hash code. Parameters: v - the array the hash code

hashCode
final public static int hashCode(byte[] v, int len)(Code)
	Generates hash codes for an array of bytes up to the specified length. It is suggested to cache the hash code. Parameters: v - the array Parameters: len - the maximal length to generate hashCode the hash code

hashCode
final public static int hashCode(char[] v)(Code)
	Generates hash codes for an array. It is suggested to cache the hash code. Parameters: v - the array the hash code

hashCode
final public static int hashCode(short[] v)(Code)
	Generates hash codes for an array. It is suggested to cache the hash code. Parameters: v - the array the hash code

hashCode
final public static int hashCode(int[] v)(Code)
	Generates hash codes for an array. It is suggested to cache the hash code. Parameters: v - the byte array the hash code

hashCode
final public static int hashCode(long[] v)(Code)
	Generates hash codes for an array. It is suggested to cache the hash code. Parameters: v - the array the hash code

hashCode
final public static int hashCode(Object o)(Code)
	Returns the object's hash code, or zero if null.

nextHashCode
final public static int nextHashCode(int prevHashVal, int newVal)(Code)
	Returns the next hash value by giving the previous one and a new one. The caller usually uses a loop to accumulate all related fields. Parameters: prevHashVal - the previous hash value returned by this method; 0if it is the first call. Parameters: newVal - the new value to put in the new hash value

toByteArray
final public static byte[] toByteArray(int v)(Code)
	Converts an integer to a big-endian byte array.

toByteArray
final public static byte[] toByteArray(long v)(Code)
	Converts a long to a big-endian byte array.

toByteArray
final public static byte[] toByteArray(short v)(Code)
	Converts a short to a big-endian byte array.

toByteArray
final public static byte[] toByteArray(byte v)(Code)
	Converts a byte to a big-endian byte array.

toCharArray
final public static char[] toCharArray(Object o)(Code)
	Converts any object to a character array. Parameters: o - the object to convert the char array or null if o is null

toString
final public static String toString(Object o)(Code)
	Converts any object to a string. If o is an object array, it invokes ArraysX.toString to make the string more readable.

Methods inherited from java.lang.Object

native protected Object clone() throws CloneNotSupportedException(Code)(Java Doc)
public boolean equals(Object obj)(Code)(Java Doc)
protected void finalize() throws Throwable(Code)(Java Doc)
final native public Class getClass()(Code)(Java Doc)
native public int hashCode()(Code)(Java Doc)
final native public void notify()(Code)(Java Doc)
final native public void notifyAll()(Code)(Java Doc)
public String toString()(Code)(Java Doc)
final native public void wait(long timeout) throws InterruptedException(Code)(Java Doc)
final public void wait(long timeout, int nanos) throws InterruptedException(Code)(Java Doc)
final public void wait() throws InterruptedException(Code)(Java Doc)

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