org.norther.tammi.acorn.util.converter
Class Types

java.lang.Object
  org.norther.tammi.acorn.util.converter.Types

public abstract class Types
extends Object

Converts between primitive types and lang classes.

Author:

Ilkka Priha

Field Summary

static String	BOOLEAN_CLASS_NAME Boolean class name.
static String	BOOLEAN_TYPE boolean type.
static String	BYTE_CLASS_NAME Byte class name.
static String	BYTE_TYPE byte type.
static String	CHAR_TYPE char type.
static String	CHARACTER_CLASS_NAME Character class name.
static String	DOUBLE_CLASS_NAME Double class name.
static String	DOUBLE_TYPE double type.
static String	FLOAT_CLASS_NAME Float class name.
static String	FLOAT_TYPE float type.
static String	INT_TYPE int type.
static String	INTEGER_CLASS_NAME Integer class name.
static String	LONG_CLASS_NAME Long class name.
static String	LONG_TYPE long type.
static Integer	MINUS Minus.
static Double	NAN NaN.
static String	NULL_STRING The string representation of null.
static String	OBJECT_CLASS_NAME Object class name.
static Integer	PLUS Plus.
static String	SHORT_CLASS_NAME Short class name.
static String	SHORT_TYPE short type.
static String	STRING_CLASS_NAME String class name.
static Integer	ZERO Zero.

Constructor Summary

Types()

Method Summary

static ClassLoader	getClassLoader() Gets a class loader.
static boolean	isArrayType(String className) Checks whether the specified class type is an array.
static boolean	isCharSequenceType(String className, boolean arrayp) Checks whether the specified class type is a char sequence, i.e.
static boolean	isNaN(Number number) Checks whether the specified number is a NaN.
static boolean	isNumericType(String className, boolean arrayp) Checks whether the specified class type is numeric, i.e.
static boolean	isPrimitiveType(String className) Checks whether the specified class type is primitive.
static boolean	isStringType(String className, boolean arrayp) Checks whether the specified class type is a string.
static boolean	toBoolean(String str) Converts a string to a boolean.
static byte	toByte(String str) Converts a string to a byte.
static String	toComponentType(String className) Converts the specified array type to the corresponding component type.
static int	toInt(String str) Converts a string to an int.
static long	toLong(String str) Converts a string to a long.
static Number	toNumber(String str, String type) Converts a string to a number.
static Class	toObjectClass(Class type) Converts a primitive type to its corresponding object class.
static String	toObjectType(String primitive) Converts a primitive type to the corresponding object type.
static String	toPlainType(Class clazz) Converts a class to its plain non-qualified component type.
static String	toPlainType(String className) Converts a class name to its plain non-qualified component type.
static String	toPrimitiveArrayType(String className) Converts an object type to the corresponding primitive array type.
static Class	toPrimitiveClass(Class clazz) Converts a class to its corresponding primitive type.
static Class	toPrimitiveClass(String className) Converts a named class to its corresponding primitive type.
static String	toPrimitiveType(String className) Converts an object type to the corresponding primitive type.
static short	toShort(String str) Converts a string to a short.

Methods inherited from class java.lang.Object

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

Field Detail

NULL_STRING

public static final String NULL_STRING

The string representation of null.

NAN

public static final Double NAN

NaN.

ZERO

public static final Integer ZERO

Zero.

PLUS

public static final Integer PLUS

Plus.

MINUS

public static final Integer MINUS

Minus.

BYTE_TYPE

public static final String BYTE_TYPE

byte type.

CHAR_TYPE

public static final String CHAR_TYPE

char type.

SHORT_TYPE

public static final String SHORT_TYPE

short type.

INT_TYPE

public static final String INT_TYPE

int type.

LONG_TYPE

public static final String LONG_TYPE

long type.

FLOAT_TYPE

public static final String FLOAT_TYPE

float type.

DOUBLE_TYPE

public static final String DOUBLE_TYPE

double type.

BOOLEAN_TYPE

public static final String BOOLEAN_TYPE

boolean type.

BYTE_CLASS_NAME

public static final String BYTE_CLASS_NAME

Byte class name.

CHARACTER_CLASS_NAME

public static final String CHARACTER_CLASS_NAME

Character class name.

SHORT_CLASS_NAME

public static final String SHORT_CLASS_NAME

Short class name.

INTEGER_CLASS_NAME

public static final String INTEGER_CLASS_NAME

Integer class name.

LONG_CLASS_NAME

public static final String LONG_CLASS_NAME

Long class name.

FLOAT_CLASS_NAME

public static final String FLOAT_CLASS_NAME

Float class name.

DOUBLE_CLASS_NAME

public static final String DOUBLE_CLASS_NAME

Double class name.

BOOLEAN_CLASS_NAME

public static final String BOOLEAN_CLASS_NAME

Boolean class name.

STRING_CLASS_NAME

public static final String STRING_CLASS_NAME

String class name.

OBJECT_CLASS_NAME

public static final String OBJECT_CLASS_NAME

Object class name.

Constructor Detail

Types

public Types()

Method Detail

toBoolean

public static boolean toBoolean(String str)

Converts a string to a boolean.

Parameters:

str - the string to convert.

Returns:

the converted string.

toByte

public static byte toByte(String str)

Converts a string to a byte.

Parameters:

str - the string to convert.

Returns:

the converted string.

toShort

public static short toShort(String str)

Converts a string to a short.

Parameters:

str - the string to convert.

Returns:

the converted string.

toInt

public static int toInt(String str)

Converts a string to an int.

Parameters:

str - the string to convert.

Returns:

the converted string.

toLong

public static long toLong(String str)

Converts a string to a long.

Parameters:

str - the string to convert.

Returns:

the converted string.

toNumber

public static Number toNumber(String str,
                              String type)

Converts a string to a number.

Parameters:

str - the string to convert.

type - the requested type.

Returns:

the converted string or null.

isNaN

public static boolean isNaN(Number number)

Checks whether the specified number is a NaN.

Parameters:

number - the number to check.

Returns:

true for a NaN, otherwise false.

isNumericType

public static boolean isNumericType(String className,
                                    boolean arrayp)

Checks whether the specified class type is numeric, i.e. a subclass of java.lang.Number.

Parameters:

className - the class type to check.

arrayp - true if an array type is accepted.

Returns:

true for a numeric type, otherwise false.

isCharSequenceType

public static boolean isCharSequenceType(String className,
                                         boolean arrayp)

Checks whether the specified class type is a char sequence, i.e. implements java.lang.CharSequence.

Parameters:

className - the class type to check.

arrayp - true if an array type is accepted.

Returns:

true for a numeric type, otherwise false.

isStringType

public static boolean isStringType(String className,
                                   boolean arrayp)

Checks whether the specified class type is a string.

Parameters:

className - the class type to check.

arrayp - true if an array type is accepted.

Returns:

true for a numeric type, otherwise false.

isPrimitiveType

public static boolean isPrimitiveType(String className)

Checks whether the specified class type is primitive.

Parameters:

className - the class type to check.

Returns:

true for a primitive type, otherwise false.

isArrayType

public static boolean isArrayType(String className)

Checks whether the specified class type is an array.

Parameters:

className - the class type to check.

Returns:

true for an aray type, otherwise false.

toPrimitiveClass

public static Class toPrimitiveClass(String className)

Converts a named class to its corresponding primitive type. The component type is returned for arrays.

Parameters:

className - the class name to convert.

Returns:

the corresponding primitive type or null if not applicable.

toPrimitiveClass

public static Class toPrimitiveClass(Class clazz)

Converts a class to its corresponding primitive type. The component type is returned for arrays.

Parameters:

clazz - the class to convert.

Returns:

the corresponding primitive type or null if not applicable.

toObjectClass

public static Class toObjectClass(Class type)

Converts a primitive type to its corresponding object class. The component type is returned for arrays.

Parameters:

type - the primitive type to convert.

Returns:

the corresponding object class or the original one.

toComponentType

public static String toComponentType(String className)

Converts the specified array type to the corresponding component type.

Parameters:

className - the array type to convert.

Returns:

the corresponding component type.

toPrimitiveType

public static String toPrimitiveType(String className)

Converts an object type to the corresponding primitive type.

Parameters:

className - the object type to convert.

Returns:

the corresponding primitive type or null if not applicable.

toPrimitiveArrayType

public static String toPrimitiveArrayType(String className)

Converts an object type to the corresponding primitive array type.

Parameters:

className - the object type to convert.

Returns:

the corresponding primitive array type or null if not applicable.

toObjectType

public static String toObjectType(String primitive)

Converts a primitive type to the corresponding object type.

Parameters:

primitive - the primitive type to convert.

Returns:

the corresponding object type or the original one.

toPlainType

public static String toPlainType(Class clazz)

Converts a class to its plain non-qualified component type.

Parameters:

clazz - the class.

Returns:

the plain type.

toPlainType

public static String toPlainType(String className)

Converts a class name to its plain non-qualified component type.

Parameters:

className - the qualified class name.

Returns:

the plain type.

getClassLoader

public static ClassLoader getClassLoader()

Gets a class loader.

Returns:

the class loader.